Journal of Vinyl & Additive Technology最新文献

{"title":"Effects of Ag ion substitution in zeolite and use of citric acid on the efficacy of antimicrobial properties of EVA-PE composite films","authors":"Sera Im,&nbsp;Jun-Young Lee,&nbsp;Jongchul Seo,&nbsp;Jaewoo Bai,&nbsp;Myeong-Su Jeon,&nbsp;Sea C. Min","doi":"10.1002/vnl.22184","DOIUrl":"https://doi.org/10.1002/vnl.22184","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Porous zeolites substituted with Ag ions (Ag_[zeolite]) or citric acid-dealuminated Ag_[zeolite] (CA-Ag_[zeolite]) were incorporated into an ethylene–vinyl acetate (EVA) and polyethylene (PE) copolymer using an extrusion process. The antimicrobial effects of the resulting films were evaluated against <i>Escherichia coli</i>, <i>Staphylococcus aureus</i>, and Human coronavirus 229E, and their physical and tensile properties were examined. CA-Ag_[zeolite] exhibited superior antibacterial results compared to Ag_[zeolite] for both bacteria, and the CA-Ag_[zeolite]-EVA-PE film demonstrated higher antimicrobial effects against the tested microorganisms than the Ag_[zeolite]-EVA-PE film. Surface elemental analysis, determination of the specific surface areas, and pore size investigations demonstrated that CA-Ag_[zeolite] possessed higher hydrothermal stability than the zeolite or Ag_[zeolite] alone. Furthermore, the CA-Ag_[zeolite]-EVA-PE film exhibited a higher <i>L</i>* value and lower <i>a</i>* and <i>b</i>* values than the Ag_[zeolite]-EVA-PE film along with lower absorbance. The former also demonstrated higher tensile strength and moisture permeability, in addition to lower roughness values on both its cross-section and surface. Moreover, the Ag_[zeolite]-EVA-PE and CA-Ag_[zeolite]-EVA-PE films exhibited higher thermal decomposition temperatures than the EVA-PE composite. Overall, the CA-Ag_[zeolite]-EVA-PE film showed potential for use as a novel antimicrobial film for application in food packaging and kitchen utensil coating materials.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Antimicrobials were prepared with EVA/PE, Ag_[zeolite], and citric acid (CA)</li>\u0000 \u0000 <li>EVA/PE films containing Ag_[zeolite] and CA showed strong antimicrobial effects</li>\u0000 \u0000 <li>CA addition improved Ag_[zeolite] distribution in the film and the film color</li>\u0000 \u0000 <li>CA addition enhanced the tensile, moisture barrier, and thermal properties</li>\u0000 \u0000 <li>Potential applications include antimicrobial packaging and utensil coatings</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"487-501"},"PeriodicalIF":3.8,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing mechanical properties of PLA-based bio composite filament reinforced with horse gram filler for 3D printing applications","authors":"Ganesh Nataraj,&nbsp;S. Ramesh Babu","doi":"10.1002/vnl.22182","DOIUrl":"https://doi.org/10.1002/vnl.22182","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Green composites for 3D printing have gained significant attention due to the potential of incorporating natural fillers to reduce costs and enhance performance while maintaining environmental benefits. The use of agricultural by-products, such as horse gram (Hg), not only promotes waste utilization but also seeks to improve the mechanical properties of biopolymers like PLA. In this study, Hg powder was utilized as a natural filler to enhance the mechanical properties of PLA-based composites. The composites were fabricated with 1%, 2%, 3%, and 4% Hg powder filler content, and the filament was processed through a single screw extruder machine. Their mechanical properties were systematically evaluated to determine the optimal filler ratio. The results indicate that the incorporation of 1% Hg filler into PLA provided superior mechanical performance compared to Neat PLA. Specifically, tensile strength increased by 11.19%, flexural strength improved by 5.32%, and compression strength increased by 5.94%. In contrast, composites with 2% and 3% Hg filler showed a reduction in these mechanical properties, highlighting that the 1% Hg/PLA composite achieves the best balance between strength and filler content. The findings suggest that the 1% Hg/PLA composite offers an optimized combination of tensile, flexural, and compression properties, making it a strong candidate for environmentally sustainable engineering applications such as lightweight structural components, automotive interior parts, and consumer product casings.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>One percent Hg filler improved tensile, flexural strength, and hardness through uniform dispersion.</li>\u0000 \u0000 <li>Higher filler content (3%–4%) led to agglomeration, reducing composite performance.</li>\u0000 \u0000 <li>XRD and SEM analyses revealed reduced PLA crystallinity and structural defects at higher filler levels.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"453-468"},"PeriodicalIF":3.8,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of bio-based polyamide 56/chitosan heavy metal adsorbing nanocomposite fibers by electrospinning","authors":"Yuhan Xu,&nbsp;Jinheng Wang,&nbsp;Chenyan Zhang,&nbsp;Jikui Wang,&nbsp;Weihong Guo","doi":"10.1002/vnl.22183","DOIUrl":"https://doi.org/10.1002/vnl.22183","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Electrospinning technology can produce nanofibers with extremely high specific surface area. Bio-based polyamide 56 (PA56) was combined with chitosan (CS) to prepare PA56/CS composite nanofibers. An in vitro mineralization experiment was conducted to obtain a super hydrophilic composite fiber (PA56/CS-HAP) with hydroxyapatite deposited on the surface. The adsorption performance of the composite fiber (PA56/CS-HAP) was evaluated by the adsorbent dosage, solution pH value, and adsorption kinetics. The curves obtained after fitting the kinetics and adsorption isotherms show that the adsorption behavior under pH = 6 is more consistent with the Langmuir adsorption model. The adsorption capacity in a 100 mg L⁻¹ Pb²⁺ environment is more than 5 times that of 10 mg L⁻¹. Bio-based PA56/CS static-spun nanocomposite fibers prepared by in vitro mineralization have great potential in environmental protection, sensors, chemical engineering, and other fields.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>PA/CS fibers were prepared by electrospinning.</li>\u0000 \u0000 <li>Hydroxyapatite was deposited by in vitro mineralization technique.</li>\u0000 \u0000 <li>PA/CS-HAP fiber achieves super hydrophilic effect.</li>\u0000 \u0000 <li>The adsorption capacity of PA/CS-HAP in 100 mg L⁻¹ Pb(II) reached 27.5 mg g⁻¹.</li>\u0000 \u0000 <li>After fitting, the adsorption process is consistent with Langmuir adsorption.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"469-486"},"PeriodicalIF":3.8,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the properties and performance of ground nut shell biocomposites using compatibilizers and flame retardants","authors":"Vijaykumar Guna,&nbsp;Desmond Daniel Chin Vui Sheng,&nbsp;C. B. Mohan,&nbsp;Narendra Reddy","doi":"10.1002/vnl.22180","DOIUrl":"https://doi.org/10.1002/vnl.22180","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Composites developed from inexpensive, renewable, sustainable, and abundant bioresources such as groundnut shells (GNS) do not have the adequate properties required for commercial applications. Hence, most of the biocomposites developed from agricultural wastes or biomass are not used for practical applications. In this study, we have demonstrated that the addition of compatibilizers and flame-resistant chemicals considerably enhances and makes the properties of GNS-reinforced polypropylene (PP) composites suitable for commercial applications. One maleated polypropylene (MAPP) and two acrylic-based compatibilizers (ABC1 and ABC2) were chosen and added into the composites in different proportions (1% to 5%). Ammonium polyphosphate (APP) was used to increase the flame retardancy of the composites. Ratio of reinforcement and matrix and composite forming conditions were also changed to achieve maximum benefits, and composites containing up to 80% GNS were developed. Tensile strength showed a good increase of 48%, whereas modulus showed a decrease of 35% with the addition of ABC2. However, the flexural strength and modulus of the composites increased with the addition of even 1% MAPP. The mechanical properties of the composites decreased when excess (5%) compatibilizer was used, probably due to agglomeration or an increase in incompatibility. Adding 3% of APP significantly improves both the flammability rating, LOI, and thermal properties. The highest flame resistance rating of V0 was obtained for both ratios, with the LOI increasing by about 40% and the conductivity decreasing marginally from 0.982 to 0.808 W/mK. Further, reduction in water absorption and hence increase in durability were also possible.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>GNS are major byproducts with limited use.</li>\u0000 \u0000 <li>Composites made from GNS have poor mechanical and performance properties.</li>\u0000 \u0000 <li>Addition of compatibilizers leads to substantial improvement in properties.</li>\u0000 \u0000 <li>Excellent thermal and flame resistance is imparted by APP.</li>\u0000 \u0000 <li>GNS composites are suitable for building, automotive, and other applications.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"427-440"},"PeriodicalIF":3.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorinated-polyhedral oligomeric silsesquioxane (F-POSS) functionalized sepiolite nanostructures for developing epoxy nanocomposites with tailored crosslinking, antifouling, and self-cleaning properties","authors":"Julieta Fabienne Uicich,&nbsp;Marcela Elisabeth Penoff,&nbsp;Pablo Ezequiel Montemartini,&nbsp;Seitkhan Azat,&nbsp;Maryam Jouyandeh,&nbsp;Mohammad Reza Saeb,&nbsp;Henri Vahabi","doi":"10.1002/vnl.22177","DOIUrl":"https://doi.org/10.1002/vnl.22177","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Developing multifunctional epoxy composites with tailored properties supports energy systems, especially oil and gas industries. We report synthesis of 3D fluorinated-polyhedral oligomeric silsesquioxanes (F-POSS) nanoparticles (NPs) co-condensed on the surface of 2D sepiolite (SEP) nanoclays, and dispersed it within an epoxy resin to facilitate curing kinetics of epoxy-amine system. A catalytic effect was realized, supporting excellent cure index, according to the kinetic models employed. Friedman model suggested double values of activation energy for composites (54.32 KJ/mol for Epoxy/SEP and 50.73 KJ/mol for Epoxy/F-POSS@SEP) compared to blank (reference) resin (26.12 KJ/mol). Nanostructure of F-POSS@SEP observed by transmission electron microscopy (TEM) and scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy, demonstrating co-condensation of F-POSS and SEP nanoclays. Nanotribology tests suggested higher surface properties. Hardness of epoxy was 0.373 GPa; when modified with 5 and 10 wt% of F-POSS@SEP it resulted in 0.41 and 0.38 GPa, respectively. The reduced modulus was 4.53 GPa for epoxy, while 5.1 and 5.0 GPa for 5 and 10 wt% F-POSS@SEP, respectively. The free surface of composites was studied by SEM and contact angle techniques. F-POSS/SEP nanostructure populated at air-free surface, as a consequence of natural migration of fluorine. Contact angle measurements were performed in dynamic tests, showing increased hydrophobicity of thermoset composites, where an outstanding antifouling behavior was correspondingly achieved. Sliding angles diminished from 19.1° for epoxy to 8.1° and 5.0° for 5 and 10 wt.% of F-POSS@SEP, respectively. Accordingly, fouling of 5 and 10 wt.% F-POSS@SEP modified composites was 42% lower than that for epoxy. Self-cleaning resulted 18% and 16% higher for 5 and 10 wt.% F-POSS@SEP nanocomposites, respectively, compared to epoxy. These results are promising to contribute high-performance materials for the energy production sector.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Developed fluorinated polyhedral oligomeric silsesquioxanes (F-POSS)/sepiolite.</li>\u0000 \u0000 <li>Detected catalytic effect of F-POSS/sepiolite on epoxy-amine cross-linking kinetics.</li>\u0000 \u0000 <li>Fouling decreased by 42%, whereas recovery increased 10-fold by cleaning surface.</li>\u0000 \u0000 <li>Self-cleaning properties demonstrated by up to 74% reduction in water slip angle.</li>\u0000 \u0000 <li>Potential use in pipelines to prevent paraffin deposits due to antifouling properties.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"382-400"},"PeriodicalIF":3.8,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gas check prevention during calendering of poly(vinyl chloride) films using poly(caprolactone)-based additives","authors":"Luis F. Alvarez,&nbsp;Kushal Panchal,&nbsp;Richard L. Leask,&nbsp;Milan Maric,&nbsp;Jim A. Nicell","doi":"10.1002/vnl.22181","DOIUrl":"https://doi.org/10.1002/vnl.22181","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Gas checks on poly(vinyl chloride) (PVC) calendered films are a common but not well understood surface quality defect that causes delays and resource wastage during the manufacturing of plastic sheets and films. Three modified poly(caprolactone) (PCL)-based additives of differing molecular weights were used as a secondary plasticizer in PVC with the goal of preventing the formation of gas checks without modifying the calendering process conditions. To better understand gas check prevention processes, the effects of the PCL-based additives on the thermal, mechanical, rheological, and chemical properties of PVC blends were assessed. A high molecular weight (2000 g/mol) PCL-based additive was unable to prevent gas checks in PVC blends, unlike the lower molecular weight (540 g/mol and 900 g/mol) additives. Chemical and physicochemical properties affect the prevention or reduction of gas checks showing that the acid values and molecular weights of the PCL-based additives are related to the number of gas checks. In contrast, physical properties, including rheological ones like complex viscosity or the storage and loss moduli that were previously hypothesized to be important factors in preventing gas check formation, were not significantly impacted by the addition of the secondary plasticizer. Furthermore, the acid value was observed to be related to the reduction in gas checks, likely due to the interaction of the dispersed functional acid groups with the entrapped air. Consequently, the effectiveness of the additive in eliminating gas checks declines as the acid value decreases.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Low concentrations of PCL-based additives prevent gas checks on PVC films.</li>\u0000 \u0000 <li>They do not significantly affect the physical/mechanical properties of films.</li>\u0000 \u0000 <li>Higher molecular weight additives are beneficial, but only below 2000 g/mol.</li>\u0000 \u0000 <li>The effectiveness of PCL-based additives increases with acid value.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"441-452"},"PeriodicalIF":3.8,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/vnl.22181","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing mechanical and thermal properties of rigid poly(vinyl chloride) composites via stearic acid-treated zinc oxide filler","authors":"Oum Keltoum Mallem,&nbsp;Narimene Zerguine,&nbsp;Fatma Zohra Benabid,&nbsp;Foued Zouai","doi":"10.1002/vnl.22178","DOIUrl":"https://doi.org/10.1002/vnl.22178","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Rigid poly(vinyl chloride) (PVC) exhibits limitations in mechanical performance and thermal stability. The aim of this study is to develop composite and nanocomposite materials with enhanced properties using zinc oxide (ZnO) as a filler to address the limitations of rigid PVC. The objective is to produce a cost-effective material with improved thermal stability and mechanical properties. To enhance dispersion and compatibility with PVC, the ZnO filler was surface-treated with stearic acid through a mechanical treatment process. The PVC/ZnO composites were prepared via melt mixing using a Brabender plastograph. The Fourier transform infrared spectroscopy and x-ray diffraction results indicate that the surface treatment significantly altered the ZnO microstructure, leading to improved ispersion within the PVC matrix. Consequently, this modification resulted in enhanced properties of the rigid PVC, with a notable improvement observed at a ZnO filler content of 2 wt%. The thermogravimetric results indicated that treated ZnO increased the thermal stability of PVC composites. The mechanical test (Tensile Testing) reveals that highest modulus of elasticity (2.8 GPa), tensile strength (41 MPa), and elongation at break (38%) was obtained with modified ZnO incorporation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Stearic acid improved ZnO filler dispersion and compatibility in rigid PVC.</li>\u0000 \u0000 <li>Treated PVC/ZnO composites showed better thermal stability and mechanical properties.</li>\u0000 \u0000 <li>FTIR, XRD, and TGA confirmed the surface treatment's impact on composites.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"401-412"},"PeriodicalIF":3.8,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step polymerization of polyvinyl alcohol/cashew gum/polypyrrole/copper oxide nanocomposites for high-performance flexible films in optoelectronics","authors":"Ayisha Jemshiya Kalladi,&nbsp;K. Jayalakshmi,&nbsp;M. T. Ramesan","doi":"10.1002/vnl.22179","DOIUrl":"https://doi.org/10.1002/vnl.22179","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>A ternary blend nanocomposite composed of polyvinyl alcohol/cashew gum/polypyrrole (PVA/CG/PPy) with varying contents of copper oxide (CuO) nanoparticles was synthesized via an in situ polymerization method, using water as an eco-friendly solvent. Fourier-transform infrared spectroscopy (FTIR), UV–visible spectroscopy, field emission scanning electron microscopy (FE-SEM), x-ray diffraction (XRD), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) were used to characterize the ternary blend nanocomposites. FTIR and UV–visible spectra demonstrated strong intermolecular interactions between the functional groups of the PVA/CG/PPy blend and the CuO nanoparticles. XRD patterns revealed that the CuO nanofillers were arranged in a structured manner within the ternary blend matrix. FE-SEM confirmed the uniform dispersion and structured arrangement of CuO nanofillers at a concentration of 3 wt% within the blend matrix. TGA and DSC results showed that the addition of CuO nanoparticles to the PVA/CG/PPy blend improved both the thermal stability and glass transition temperature of the blend matrix. Electrical properties improved with CuO content up to 3 wt%, resulting in enhanced conductivity, an increased dielectric constant, and reduced activation energy. The highest tensile strength, 13.76 MPa, was also observed at this concentration. However, properties declined beyond 3 wt% due to agglomeration, making 3 wt% the ideal concentration for maximum performance. This study highlights the potential of PVA/CG/PPy/CuO nanocomposites for applications requiring improved electrical properties and thermal stability, particularly in flexible electronics and energy storage devices.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Eco-friendly synthesis of PVA/CG/PPy/CuO biopolymer nanocomposite films</li>\u0000 \u0000 <li>Improvement in morphological, and optical properties of PVA/CG/PPy/CuO films.</li>\u0000 \u0000 <li>CuO nanofillers magnify the thermal properties of the pristine PVA/CG/PPy</li>\u0000 \u0000 <li>Conductivity and dielectric characteristics: frequency and temperature dependence explored.</li>\u0000 \u0000 <li>PVA/CG/PPy/CuO nanocomposite films: pliable contenders unveiling industrial potentials.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"413-426"},"PeriodicalIF":3.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modification of chain extension and crosslinking structures of recycled polyester textile for 3D printing filament","authors":"Lingquan Hu,&nbsp;Jianzhong Sun,&nbsp;Meng Zhang,&nbsp;Jun Liu,&nbsp;Shouxiang Jiang","doi":"10.1002/vnl.22176","DOIUrl":"https://doi.org/10.1002/vnl.22176","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The increase in amount of polyester textile waste is contributing to the severity of environmental pollution because polyester cannot be easily recycled. To reduce the limits of its recyclability, a value-added recycling approach should be explored. This work introduces an approach for recycling polyester textiles into 3D printable filaments. To increase recyclability of polyester textiles, the polyester materials are modified by ADR4468 additive. After the polyester is 3D printed, the sample with 1.0 wt% of ADR4468 shows the highest tensile and compressive strength properties compared with 1.5 and 2.0 wt%, owing to its fewer voids between the printed lines, a fish scale-like morphology that spreads out, and a higher degree of crystallization. Moreover, the mechanism of modification suggests that ADR4468 extends and crosslinks the polyester chains by ring-opening reactions of epoxy groups of ADR4468 and forms sea-island structures. The sea-island structures of bonded polyester branched cores with tangled polyester shell interface areas and unbonded polyester chain areas performed suitable rheological behaviors to recycle polyester textiles for 3D printable filaments production. The filaments can be used to replace commercially available filaments, offer a sustainable option for consumers, and impact both the polyester textile-related recycling and 3D printing industries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>An approach is proposed to recycle polyester textiles for 3D printing filament</li>\u0000 \u0000 <li>The approach uses a mechanical method to recycle polyester textiles</li>\u0000 \u0000 <li>Recycled polyesters were modified by ADR4468 to form core-shell structures</li>\u0000 \u0000 <li>Core-shell structures were separated by short polyesters(sea-island structure)</li>\u0000 \u0000 <li>The structures met rheological behaviors for 3D printing filament</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"367-381"},"PeriodicalIF":3.8,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid-phase synthesis of grafted carbon black for superior aging resistance in biodegradable poly(butylene adipate-co-butylene terephthalate) composite films","authors":"Ke Wang,&nbsp;Xiaoyan Sun,&nbsp;Fayong Li,&nbsp;Dong Xie","doi":"10.1002/vnl.22173","DOIUrl":"https://doi.org/10.1002/vnl.22173","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Biodegradable films mitigate plastic pollution but often lack UV-aging resistance, shortening their lifespan. While anti-aging additives can boost the films' durability, small molecule migration constrains the extension of their service life. This study introduces a straightforward solid-phase reaction for producing carbon black (CB) grafted with the UV absorber UV531, termed CB-UV531. This material was then blended with the biodegradable polymer PBAT and transformed into a film via blow molding, yielding a durable UV-resistant biodegradable film (PBAT/CB-UV531). This solid-phase grafting reaction does not require any solvents, thereby reducing solvent contamination and waste, and it is simple to operate, allowing for scalable production. Compared to the unmodified CB, the obtained CB-UV531 exhibits significantly improved thermal stability, which can effectively reduce the loss of UV531 during the subsequent high-temperature film-blowing process. Furthermore, the chemically bonded UV absorber on the surface of CB-UV531, coupled with its reduced particle size, promotes enhanced dispersibility and consistent stability within the PBAT/CB-UV531 film, markedly improving its long-term resistance to UV aging. This method is expected to enhance the anti-aging effects of various commercial light stabilizer additives and can be used to extend the lifespan of different biodegradable materials.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>A simple solid-phase reaction method was developed to prepare CB-UV531.</li>\u0000 \u0000 <li>CB-UV531 reveals smaller size and superior dispersibility.</li>\u0000 \u0000 <li>Biodegradable PBAT/CB-UV531 film was prepared via a blowing process.</li>\u0000 \u0000 <li>UV531 migration loss in PBAT/CB-UV531 film is significantly reduced.</li>\u0000 \u0000 <li>PBAT/CB-UV531 film shows enhanced thermal stability and aging resistance.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 2","pages":"326-338"},"PeriodicalIF":3.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}