Journal of Vinyl & Additive Technology最新文献

{"title":"Eco-friendly mechanochemical synthesis of hybrid phosphide flame retardants for enhanced fire safety in epoxy resins","authors":"Shengxiang Deng,&nbsp;Banglin Wu,&nbsp;Haiyang He,&nbsp;Sheng Zhong,&nbsp;Kaiwen Deng,&nbsp;Xiaming Feng,&nbsp;Hongyu Yang,&nbsp;Chaojun Wan,&nbsp;Cheng Yan","doi":"10.1002/vnl.22191","DOIUrl":"10.1002/vnl.22191","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Traditional synthesis methods for metal phosphides are often inefficient and not environmentally friendly due to complex procedures. Here, we propose an eco-friendly and efficient mechanochemical method for phosphide flame retardant synthesis through high-energy ball milling. Specifically, solid red phosphorus and Ti₃AlC₂ were directly reacted in the milling jar, producing a hybrid flame retardant with TiP and AlP as the main active components (TiP/AlP@C). It demonstrates that the TiP/AlP@C exhibited excellent performances, reducing the maximum thermal decomposition rate of epoxy resin by 35.3%, the maximum carbon monoxide release rate by 29.3%, and the maximum smoke release rate by 11.3%. These findings suggest that the synthesized TiP/AlP@C primarily exerts its flame-retardant effect by catalyzing the formation of a protective char layer, which acts as a barrier during combustion. This study confirms the effectiveness and scientific validity of the innovative mechanochemical synthesis method for advanced flame retardants.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Hybrid phosphide flame retardants were prepared by high energy ball milling.</li>\u0000 \u0000 <li>The milling speed and time are crucial for the mechanochemical reaction.</li>\u0000 \u0000 <li>Hybrid phosphide additive is efficient in reducing fire hazard of epoxy resin.</li>\u0000 \u0000 <li>A synergistic charring effect from hybrid metal phosphides is proposed.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 3","pages":"560-571"},"PeriodicalIF":3.6,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897079","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":"Synergistic effect of graphene oxide on the properties of poly (vinyl alcohol)/carboxymethyl cellulose electrospun nanofiber mats","authors":"Karanjit Kapila,&nbsp;Dr Sushen Kirtania,&nbsp;Mr Kaushik K. Nath,&nbsp;Mr Akuleti Saikumar,&nbsp;Dr Laxmikant S. Badwaik,&nbsp;Dr Gazi Ameen Ahmed","doi":"10.1002/vnl.22192","DOIUrl":"10.1002/vnl.22192","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The aim of this study was to develop polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC)/graphene oxide (GO) nanofiber mats using electrospinning fabrication technique. Polymer solutions were prepared with PVA at a concentration of 6% w/v, CMC ranging from 0.5% to 1.5% w/v, in a 1:1 polymer blend ratio, and GO nanofiller from 0.1% to 0.5% w/v. Addition of CMC and GO amend the solution properties such as conductivity and viscosity, leading to notable alteration in nanofiber diameters from 90.514 to 169.225 nm. As evidenced by rheological analysis, addition of GO significantly enhanced the storage moduli and shear stress of PVA/CMC/GO solutions compared to PVA and PVA/CMC. According to tensile properties, the tensile strength of PVA/CMC/GO nanofiber mats was increased by 25.59% to 46.41% at 0.1%–0.3% w/v of GO compared to PVA/CMC mats, contributing to overall mechanical improvements. FTIR spectroscopy revealed interactions between the hydroxyl (<span></span>OH) groups of PVA and carboxylate groups (<span></span>COOH) of CMCs, with increased intensity in <span></span>OH and C<span></span>H absorption bands. The presence of hydrophilic functional groups increases the wettability of the nanofiber mats, as indicated by reduced water contact angles from 51.321° to 45.924°. The oxygen-rich structure of GO enhances the barrier properties of nanofiber mats, resulting in reduced water vapor permeability (WVP) from 1.049 to 0.980 g/m.h. Pa and moisture retention capacity (MRC) from 95.68% to 90.854%. Moreover, TGA analysis showed a significant improvement in the decomposition temperature of the hybrid PVA/CMC/GO nanofibers, resulting in reduced mass loss compared to other developed nanofibers. Overall, the obtained results validate the use of CMC biopolymer and GO nanofiller as an additive for the production nanofiber mats with improved structural, mechanical, thermal and barrier properties particularly for industrial, medical and packaging applications.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Blending of polymers to overcome the properties of single polymer system.</li>\u0000 \u0000 <li>Development of PVA, PVA/CMC and PVA/CMC/GO electrospun nanofiber mats.</li>\u0000 \u0000 <li>Effect of GO nanofiller on the properties of nanofiber mats.</li>\u0000 \u0000 <li>Potential future applications in advanced engineering and material sciences.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 3","pages":"572-588"},"PeriodicalIF":3.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897035","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":"The effect of solvent, graft density, and actuators-lubricants on the evaluation of friction and viscosity of slip additives","authors":"Rafael Catarino-Centeno,&nbsp;Erwin García-Hernández","doi":"10.1002/vnl.22189","DOIUrl":"10.1002/vnl.22189","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>This work carried out a mesoscopic scale numerical modeling of a polymeric brush system constituted of a heterogeneous mixture of two slip additives erucamide (Eru) and stearyl erucamide (sEru). The polymeric brushes are grafted onto two parallel plates moving under a stationary laminar Couette-type flow in non-equilibrium conditions, to evaluate the coefficient of friction (Cof) and the viscosity system. The Cof and viscosity were obtained as a function of the graft concentration, solvent and brush composition, and the fixed number of Eru actuators-lubricants. It was found that the 2:1 ratio (Eru:sEru) seems to be the most effective in reducing the Cof in all cases, but specifically for the 80%-air/20%-humidity solvent composition, the Cof reaches a value of 0.33 keeping the number of Eru actuators-lubricants fixed at 400. Under the same conditions, viscosity reduction is favored at higher graft concentrations, reaching values of 0.8 and 0.7 respectively. The results indicate that by increasing the amount of Eru actuators-lubricants, the Cof decreases significantly with a higher concentration of grafts. This could be crucial to optimizing friction properties, impacting various applications such as the plastics and packaging industry, agricultural film production, lubricant, and textile coatings, where these slip additives are commonly used.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Solvent composition influences the optimization of the Cof and viscosity.</li>\u0000 \u0000 <li>Eru actuators-lubricants act as lubricating rollers in the solvent.</li>\u0000 \u0000 <li>The mixture of the brushes reduces the Cof between the surfaces.</li>\u0000 \u0000 <li>The molecular mechanism of slip additives is predicted at a mesoscopic scale.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 3","pages":"531-543"},"PeriodicalIF":3.6,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897267","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":"Development of novel ecofriendly sodium alginate-gelrite gellan gum composite films: Effects of glycerol and sorbitol","authors":"Saurabh Bhatia,&nbsp;Talha Shireen Khan,&nbsp;Aysha Salim Alhadhrami,&nbsp;Sampath Chinnam,&nbsp;Yasir Abbas Shah,&nbsp;Anil K. Philip,&nbsp;Esra Koca,&nbsp;Levent Yurdaer Aydemir,&nbsp;Ahmed Al-Harrasi","doi":"10.1002/vnl.22187","DOIUrl":"10.1002/vnl.22187","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The current study investigated the impact of various concentrations of plasticizers, especially glycerol and sorbitol, on the physical and chemical characteristics, as well as the antioxidant capabilities, of films made from sodium alginate and gelrite gellan gum. The elongation at break and thickness of the film samples increased, while water vapor permeability, opacity, and tensile strength of the film samples decreased with the increase in concentration of plasticizers. Film samples became more transparent and glossier in nature with increasing concentrations of plasticizers. Scanning electron microscopy revealed that sorbitol-loaded films showed a smooth and homogenous structure as compared to glycerol-loaded film samples. The control film samples showed significantly higher antioxidant activity compared to the other film samples. Contact angle measurements demonstrated that the film samples became more hydrophilic with the addition of plasticizers. This study provides an overview of the role of plasticizers, including glycerol and sorbitol, in the fabrication and application of biopolymeric films for food packaging.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 \u0000 <ul>\u0000 \u0000 \u0000 <li>Plasticizers increased EAB and thickness but decreased WVP, opacity, and TS.</li>\u0000 \u0000 \u0000 <li>Films with higher plasticizer levels were more transparent and thinner.</li>\u0000 \u0000 \u0000 <li>Sorbitol-loaded films were more homogenous than glycerol-loaded ones.</li>\u0000 \u0000 \u0000 <li>Control films had higher antioxidant activity than plasticizer-added films.</li>\u0000 \u0000 \u0000 <li>Increase in plasticizer level increased hydrophilicity of films</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 5","pages":"1218-1232"},"PeriodicalIF":3.6,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038524","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":"New method for extraction, identification, and quantification of non-intentionally added substances in polystyrene","authors":"Sacha Pérocheau Arnaud,&nbsp;Véronique Michelet,&nbsp;Sandra Olivero,&nbsp;Patrick Navard,&nbsp;Christelle Combeaud,&nbsp;Alice Mija","doi":"10.1002/vnl.22188","DOIUrl":"10.1002/vnl.22188","url":null,"abstract":"<p>An efficient one-step extraction method was developed for the recovery of additives and non-intentionally added substances (NIAS) from polystyrene, performed at room temperature for 2.33 h, without grinding to avoid fostering the formation of NIAS unrelated to polymer processing. Solvent use (39.2 mL/g) was greatly reduced compared with extraction conditions previously reported. The study of NIAS is analytically challenging but with high importance since their presence is a potential threat to human health and to the environment while reducing plastic potential recyclability. For an understanding of NIAS formation and influence of processing parameters, a systematic approach was taken, using virgin polystyrene mixed with known quantities of standard additives as model materials (Irganox_1076, Tinuvin_326, Irgafos_168). The degradation of one additive was identified by NMR and GC–MS. Precise multiple-point quantification with internal standard was performed by GC–MS, measuring a 5.1 wt% Irgafos_168 degradation, with additives LOD ranging from 0.55–0.95 ppm. Evaluation of analytical challenges, such as matrix effects, was discussed and quantified. This method will help the quality control of virgin and recycled PS materials, including food contact ones, and improve the knowledge of PS processing impact on NIAS formation.</p>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 3","pages":"518-530"},"PeriodicalIF":3.6,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/vnl.22188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896869","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":"Carboxymethyl cellulose-based bioactive food packaging films incorporated with Ficus religiosa/Psidium guajava extracts: Effect of additive ratio variation","authors":"Swati Sharma,&nbsp;Ruchir Priyadarshi,&nbsp;Narayan Chandra Mishra","doi":"10.1002/vnl.22186","DOIUrl":"10.1002/vnl.22186","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The incorporation of plant extract into biopolymers is an environment-friendly method of fabricating bioactive films (BFs) with multifunctional properties for food packaging. The current work explores the development of carboxymethyl cellulose (CMC)-based BFs by combining <i>Ficus religiosa</i> (Peepal) extract (PLE) and <i>Psidium guajava</i> (Guava) extract (GLE) in varying ratios. The impact of extract concentration on the films' physiochemical and functional properties was examined. The structural analysis of the films showed good compatibility between the polymer and extracts. The findings indicate that BFs with PLE and GLE in a 50:50 ratio exhibited better mechanical properties than other films. All the BFs enhanced oxidative stability and UV-blocking properties. Among all combinations, the CMC/GLE¹⁰⁰ film (having only GLE and CMC) exhibited the highest antioxidant and UV-blocking properties although transparency is slightly reduced. On employing the CMC/GLE¹⁰⁰ film as UV protective packaging, it was able to preserve the color and shape of grapes even after 48 h of direct UV exposure. CMC/GLE¹⁰⁰ film, when applied to pack fried items, exhibited enhanced oxidative stability. Overall, CMC/GLE¹⁰⁰ film can find potential applications for packaging fruits and fried items.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 \u0000 <ul>\u0000 \u0000 \u0000 <li>CMC/GLE¹⁰⁰ film exhibited enhanced oxidative stability for packing fried items.</li>\u0000 \u0000 \u0000 <li>CMC/GLE¹⁰⁰ film showed potential as UV-blocking film for fruits' packing.</li>\u0000 \u0000 \u0000 <li>CMC/GLE¹⁰⁰ film exhibited very good antioxidant potential.</li>\u0000 \u0000 \u0000 <li>CMC/GLE¹⁰⁰ film has very good UV-blocking properties but decreased transparency.</li>\u0000 \u0000 \u0000 <li>BFs with PLE/GLE in a 50:50 ratio exhibits very good mechanical properties.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 5","pages":"1201-1217"},"PeriodicalIF":3.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038108","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":"Addition of ammonium polyphosphate for simultaneous enhancement of flame retardancy, mechanical, and viscoelastic properties of PALF-reinforced bio-HDPE composite","authors":"Aditya Pratap Singh,&nbsp;Manoj Kumar Singh,&nbsp;Sanjay Mavinkere Rangappa,&nbsp;Suchart Siengchin,&nbsp;Himanshu Pathak,&nbsp;Sunny Zafar","doi":"10.1002/vnl.22185","DOIUrl":"10.1002/vnl.22185","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>This work is focused on reducing the flammability of 25 wt.% pineapple leaf fiber (PALF)-reinforced bio-based high-density polyethylene (bio-HDPE) composites. Varying contents of ammonium polyphosphate (APP) up to 10 wt.%, have been incorporated as a flame retardant while its effects on mechanical and viscoelastic properties are also evaluated. The linear burning rate is reduced by up to 26% for 10% APP content in the horizontal burn test. The incorporation of APP also proved beneficial in arresting the dripping of the polymer matrix during the vertical burn test. Thermal analysis showed that the interaction between APP and natural fibers enhanced the residual char content by up to 9%. Furthermore, dynamic mechanical analysis revealed an increase in the damping factor (loss tangent) with APP addition. The findings recommend incorporating up to 5% APP in PALF/Bio-HDPE composites as optimum. PALF-reinforced Bio-HDPE composite with improved flame retardancy, mechanical, and damping properties is achieved, offering an alternative to conventional composites used in automobile and construction industries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Flame-retardant composites made from 25% PALF and 10% APP.</li>\u0000 \u0000 <li>10% APP base composite showed a 26% reduced UL 94 horizontal burning rate.</li>\u0000 \u0000 <li>APP incorporation increases residual char content and prevents dripping also.</li>\u0000 \u0000 <li>APP enhances both the mechanical properties and damping factor of composites.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"31 3","pages":"505-517"},"PeriodicalIF":3.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897074","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":"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":"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":3.6,"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":"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":3.6,"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":"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":3.6,"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}