Journal of Vinyl & Additive Technology最新文献

{"title":"Preparation and properties of two types of tung oil-based liquid auxiliary heat stabilizer for polyvinyl chloride processing","authors":"Xiao Feng,&nbsp;Shouhai Li,&nbsp;Na Yao,&nbsp;Xiaohua Yang,&nbsp;Mingtao Lin,&nbsp;Hongxiao Wang,&nbsp;Haiyang Ding,&nbsp;Lina Xu,&nbsp;Mei Li,&nbsp;Tianxiang Deng","doi":"10.1002/vnl.22144","DOIUrl":"10.1002/vnl.22144","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>In this work, two types of tung oil-based auxiliary heat stabilizers (Ph-T and Ph-TO) were prepared for application in PVC processing. Combined with traditional heat stabilizers (calcium stearate and zinc stearate), Ph-T or Ph-TO can greatly alleviate “zinc burning” during the PVC processing which can significantly extend the processing time of PVC, so that improve the fault tolerance rate during PVC processing. Notably, the preparation process of Ph-T and Ph-TO is simple and does not require any heating, leading to reduced production costs and simplified manufacturing processes. Additionally, Ph-T or Ph-TO can enhance the plasticity of PVC, reducing the need for plasticizers and achieving multiple benefits with a single additive, which might be applicable in the production of blood bags or cable sheathing.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Two types novel tung oil-based liquid auxiliary heat stabilizer for PVC processing were prepared. The preparation process is simple and does not require any heating.</li>\u0000 \u0000 <li>These auxiliary heat stabilizers can greatly alleviate “zinc burning” during the PVC processing and which can significantly extend the processing time of PVC, improve the fault tolerance rate during PVC processing.</li>\u0000 \u0000 <li>These auxiliary heat stabilizers can improve the overall plasticity of the PVC material and achieving the multi-effect.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1599-1608"},"PeriodicalIF":3.8,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742623","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":"Significant role of novel additives in improving the antibacterial properties of rubber composite: A comprehensive review","authors":"Heba Kandil","doi":"10.1002/vnl.22143","DOIUrl":"10.1002/vnl.22143","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Antibacterial products have gained considerable attention from both the academic and industrial communities due to the transmission of several infectious diseases which has raised public awareness of the disinfection pathways of such highly infectious bacteria. Among the materials that have raised public awareness are rubber composite materials as they are present in many different applications, such as medical apparatus, health care products, food packaging, and house furnishings Therefore, the development of rubber-composite-based materials with antibacterial activity is crucial to avoid the propagation of pathogens. In this regard, researchers have directed their focus toward the development of innovative additives with antibacterial properties to enhance the antibacterial activities of rubber composites. Several promising additives have emerged, most notably metal and metal oxide nanoparticles, biopolymers, plant-derived materials, and synthetic organic compounds. The studies have shown that the incorporation of these additives endows the rubber composites with antibacterial properties, making them applicable in a range of biomedical uses. In light of these findings, the present review aims to cover recent works to improve the antibacterial properties of rubber composites using different additives.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Rubber composite materials, found in various applications like medical apparatus and food packaging, have raised public awareness of infection prevention.</li>\u0000 \u0000 <li>Development of rubber-composite-based materials with antibacterial activity is crucial for preventing pathogen propagation.</li>\u0000 \u0000 <li>Researchers focus on innovative additives, including metal nanoparticles, biopolymers, plant-derived materials, and synthetic organic compounds, to enhance antibacterial properties.</li>\u0000 \u0000 <li>Incorporating these additives into rubber composites endows them with antibacterial properties, suitable for biomedical applications.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1372-1395"},"PeriodicalIF":3.8,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742624","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":"An experimental study on jute/banana fiber reinforced poly(vinyl alcohol) composites with nanofiller","authors":"Tasfia Tasnim,&nbsp;M. S. Rabbi,&nbsp;Md. Mahmudul Adil,&nbsp;Md. Abdul Hasib","doi":"10.1002/vnl.22127","DOIUrl":"10.1002/vnl.22127","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The incorporation of nanoparticles into natural fiber composites has the potential to alter the characteristics of natural fiber composites. In this study, various properties of jute and banana fiber reinforced poly(vinyl alcohol) (PVA) composites with different nanofillers incorporation were investigated. Samples were prepared using the vacuum bagging technique. Inorganic nanoparticles (Al₂O₃, ZnO, MgO, CuO, and TiO₂) were synthesized using a ball milling machine and in each sample, 3 wt.% of nanofillers were incorporated. The maximum ultimate tensile strength and elongation percentage is found for TiO₂, which is 90.433% higher than pure PVA whereas MgO incorporated samples provides maximum flexural strength, which is 162.59% higher than PVA. The sample with Al₂O₃ provides strongest impact resistance, 17.3 J/cm². It was found that the decomposition temperatures were slightly higher for MgO and CuO doping than the undoped PVA composite. The FT-IR spectra exhibited notable hydroxyl groups and minor shifts indicating a reduction in hydrophilicity upon the introduction of nanoparticles. The water absorption exhibited a reduction of up to 36% in conjunction with an increase in density across all samples. The highest crystallinity is found for CuO nanofiller composite, validated by x-ray diffraction analysis. Additionally, morphological changes in the composites were seen through scanning electron microscopy and EDX shows a strong peak at 2.1 keV indicate some impurities present in the samples.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Jute/banana/PVA composites were prepared with 3 wt% nanoparticles incorporation.</li>\u0000 \u0000 <li>Metal oxides such as Al₂O₃, ZnO, MgO, CuO, and TiO₂ were used as nanoparticle.</li>\u0000 \u0000 <li>The use of nanoparticle improved the tensile, flexural, and impact properties.</li>\u0000 \u0000 <li>Decomposition temperatures were found higher for MgO and CuO incorporated composites.</li>\u0000 \u0000 <li>Upon nanoparticle incorporation, water absorption exhibited a reduction of upto 36%.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 5","pages":"1327-1340"},"PeriodicalIF":3.8,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141649578","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":"Synthesis and dielectric properties of polyvinyl chloride/zinc oxide nanocomposites","authors":"Ali F. Al-Shawabkeh,&nbsp;Adel A. Shaheen,&nbsp;Ziad M. Elimat,&nbsp;Mousa M. A. Imran,&nbsp;Imad Hamadneh,&nbsp;Ammar H. Al-Dujaili","doi":"10.1002/vnl.22131","DOIUrl":"10.1002/vnl.22131","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;p&gt;Because of its special structural and functional characteristics, poly(vinyl chloride)/zinc oxide nanocomposite (PVC/ZnO) exhibits great potential in a variety of electrical, optical, water treatment, and medical applications. According to that, this study was carried out to examine the AC electrical properties of the prepared PVC/ZnO nanocomposite films using the AC impedance techniques. The PVC/ZnO nanocomposite films were prepared by casting method by weight% concentrations of 2.5, 5.0, 7.5 and 10.0% ZnO nanoparticle. Each mixture was fabricated in film and casted in 5 cm × 5 cm glass caste. Fourier transform infrared (FTIR) spectroscopy, x-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to characterize the nanocomposites samples. The results of the FTIR spectroscopy analysis of the PVC/ZnO nanocomposites confirmed the presence of peaks characteristic of the vibration of the Zn&lt;span&gt;&lt;/span&gt;O bond. XRD revealed that pure PVC films are partially crystalline with hallow peak but ZnO nanoparticles have wurtzite structure, and the nanocomposite films were almost the same as those of ZnO with decrease in the degree of crystallization, causing increase in the amorphous region. The surface of the films was analyzed by SEM, which becomes rough with some small aggregates compared with pure PVC with good distribution in the entire surface region with bright spots. The electrical properties AC conductivity (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;σ&lt;/mi&gt;\u0000 &lt;mi&gt;Ac&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;&lt;/math&gt;), real dielectric constant (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msup&gt;\u0000 &lt;mo&gt;∈&lt;/mo&gt;\u0000 &lt;mo&gt;′&lt;/mo&gt;\u0000 &lt;/msup&gt;\u0000 &lt;/mrow&gt;&lt;/math&gt;), imaginary dielectric constant (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msup&gt;\u0000 &lt;mo&gt;∈&lt;/mo&gt;\u0000 &lt;mo&gt;″&lt;/mo&gt;\u0000 &lt;/msup&gt;\u0000 &lt;/mrow&gt;&lt;/math&gt;), real electrical modulus (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;M&lt;/mi&gt;\u0000 &lt;mo&gt;′&lt;/mo&gt;\u0000 &lt;/msup&gt;\u0000 &lt;/mrow&gt;&lt;/math&gt;), and imaginary electric modulus (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;M&lt;/mi&gt;\u0000 &lt;mo&gt;″&lt;/mo&gt;\u0000 &lt;/msup&gt;\u0000 &lt;/mrow&gt;&lt;/math&gt;) were studied in the frequency range 2–6 MHz and temperature range 293–313 K for the prepared film studied. The results showed that the properties of the PVC/ZnO nanocomposite films were found to be dependent on the frequency, and the concentration of the ZnO nanoparticle in the PVC polymer matrix. In addition, the results of the ","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1458-1467"},"PeriodicalIF":3.8,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612853","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":"Synthesis of a new Schiff base acceptor–donor molecule as a UV stabilizer for enhanced poly(lactic acid) (PLA) photoprotection","authors":"Hamid J. Mohammad,&nbsp;Ayysha Shihab Ahmed,&nbsp;Taiseer Abdul-kader Saleh,&nbsp;Mohammed Basil Anwer,&nbsp;Hussein A. Hamzah,&nbsp;Sohad A. Alshareef,&nbsp;Zamzam Alhuwaymil,&nbsp;Rasha Saad Jwad,&nbsp;Mohammed H. Al-Mashhadani","doi":"10.1002/vnl.22140","DOIUrl":"10.1002/vnl.22140","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;p&gt;Poly(lactic acid) (PLA) is a biodegradable aliphatic polyester of significant interest. Owing to its traits, PLA stands out as one of the most widely used polymers in various fields. Nevertheless, environmental conditions, such as heat, UV light, and humidity have negative impacts on the polymer's performance as a result of the accelerating aging process. In this study, we present a novel acceptor–donor (AD) Schiff base molecule that demonstrates significant UV stabilization when incorporated into the polymer's matrix. The stabilization effect of the AD molecule was studied by using the weight loss method and tracking the functional group indices of CO (I&lt;sub&gt;CO&lt;/sub&gt;) and O&lt;span&gt;&lt;/span&gt;H (I&lt;sub&gt;OH&lt;/sub&gt;) that emerge because of polymer degradation after irradiation with UV light for 300 h. The films' structures were studied by scanning electronic microscopy (SEM), atomic force microscope (AFM), and energy-dispersive x-ray spectroscopy (EDX) to evaluate the stabilization enhancement of AD moiety. The results exhibit a significant decrease in weight loss for blended PLA, in contrast to blank PLA. The weight loss percentage reduced from 2.5 for blank PLA to less than 0.7 for blended PLA. Furthermore, I&lt;sub&gt;CO&lt;/sub&gt; and I&lt;sub&gt;OH&lt;/sub&gt; indices witness a remarkable reduction which verifies the improved photodegradation resulting from AD moiety. The suggested method involves the efficient absorption of UV radiation produced during photo-degradation by the AD molecule, which then emits this light as visible blue light without causing any damage to PLA film's chemical structure. Our results demonstrate the adaptability of AD molecules as PLA photo-stabilizers and point to their wider significance for sustainable material applications. This work advances the stability of PLA films and provides opportunities for the creation of novel stabilization techniques based on organic electrical principles. Future studies may examine the multipurpose uses of the AD molecule in sensor materials and other contexts.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Highlights&lt;/h3&gt;\u0000 \u0000 &lt;div&gt;\u0000 &lt;ul&gt;\u0000 \u0000 &lt;li&gt;Presenting a novel acceptor–donor Schiff base as a phot stabilizer of PLA.&lt;/li&gt;\u0000 \u0000 &lt;li&gt;Using the weight loss method and tracking the functional group indices to test the degradation.&lt;/li&gt;\u0000 \u0000 &lt;li&gt;A significant decrease in weight loss for blended PLA, in contrast to blank PLA.&lt;/li&gt;\u0000 \u0000 &lt;li&gt;The Schiff base absorbing UV light, excited electrons from ground state to excited state.&lt;/li&gt;\u0000 \u0000 &lt;li&gt;They return to the ground state and produce bright blue light.&lt;/li&gt;\u0000 \u0000 &lt;li&gt;These movement of electrons cause no damage to the PLA polymer cha","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1570-1583"},"PeriodicalIF":3.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588326","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":"Synthesis of flexible magneto-electric polyvinyl alcohol composites using hybrid filler particles of carbon quantum dots and cobalt nano for electromagnetic interference shielding application","authors":"T. Suresh,&nbsp;Sumanth Ratna Kandavalli,&nbsp;T. Rajendiran,&nbsp;K. Chanthirasekaran","doi":"10.1002/vnl.22107","DOIUrl":"10.1002/vnl.22107","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The main objective of the study is to synthesis and characterization of flexible magneto-electric Polyvinyl Alcohol (PVA) composites for Electromagnetic Interference (EMI) shielding applications, by incorporating carbon quantum dots extracted from lychee fruit husks and cobalt nanoparticles sourced from <i>Plectranthus amboinicus</i>. Comprehensive mechanical, dielectrical, magnetic, and shielding tests were conducted to assess the performance of these novel materials. The mechanical characteristics of the composites were assessed to gauge their flexibility and robustness. In this regard, PV4 displayed a substantial tensile strength of 68 MPa, while PV6 exhibited an enhanced shore-D hardness rating of 47. PV6 demonstrates superior dielectric properties, including a higher dielectric constant and a lower loss tangent, which are crucial for optimizing EMI shielding efficiency. When it comes to magnetic characteristics such as magnetization, retentivity, and coercivity, the PV6 composite designation outperforms the other composites. Additionally, PV6 exhibits higher electromagnetic interference (EMI) shielding effectiveness, measuring at approximately 49.8 dB in the E band and 56.5 dB in the F band. Findings demonstrate that the integration of carbon quantum dots and cobalt nanoparticles into the matrix resulted in flexible composites with enhanced mechanical strength. The incorporation of cobalt contributed to notable magnetic properties, increasing the materials' magnetization and retentivity. The tests on electromagnetic interference (EMI) showed that the shielding effectiveness got improved. The composite materials were able to reduce interference from electromagnetic waves in the tested frequency ranges. These flexible magneto-electric PVA composites, developed using sustainable sources such as lychee fruit husks and <i>Plectranthus amboinicus</i>, exhibit promising potential for EMI shielding applications in diverse industries, including telecommunications, aerospace, and electronics, where reliable interference control is essential for optimal performance and safety.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Cobalt nanoparticles sourced from <i>Plectranthus amboinicus</i>.</li>\u0000 \u0000 <li>Carbon quantum dots are prepared from lychee fruit husks via controlled pyrolysis.</li>\u0000 \u0000 <li>High tensile strength PVA composites prepared.</li>\u0000 \u0000 <li>Highest dielectric constant of 8.2 achieved for composite PV6.</li>\u0000 \u0000 <li>Higher wave shielding up to 56.5 dB achieved in “E” band.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 5","pages":"1124-1138"},"PeriodicalIF":3.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570169","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":"A perspective on additives for flexible packaging","authors":"Barry A. Morris","doi":"10.1002/vnl.22135","DOIUrl":"10.1002/vnl.22135","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Additives have been critical to the growth of flexible packaging since its inception nearly 100 years ago. Additives help tailor the performance of new materials to meet packaging needs and to efficiently run on film converting and packaging equipment. Examples include antioxidants for thermo-oxidative stability during extrusion, slip and antiblock agents to improve film handling and frictional properties, polymer process aides (PPAs) to delay the onset of flow instabilities and increase output, pigments for coloring films and creating light barrier, antifog agents to improve wetting of film surfaces, antistat agents to reduce static charge, and nucleating agents for increasing the rate of crystallization and controlling crystalline morphology. This paper provides a brief history of the development and use of additives in flexible packaging, focusing on polyolefins. It then looks forward at new challenges and opportunities for additive development. One area is regulatory driven, most recently replacing per-and polyfluoroalkyl substances (PFAS)-containing PPAs with non-PFAS technology. The industry has had to respond very rapidly to changing regulations and introduce new technology. The challenge is understanding the impact of the new technology on performance. A second area is sustainability where additives will be critical for upgrading the performance of mechanically recycled post-consumer packaging waste, redesigning flexible packaging structures so that they can be recycled in the PE-stream, and using bio-based or compostable polymers. New research methods such as high throughput experimentation, artificial intelligence and computer modeling and simulation will likely accelerate additive development in the future.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Additives are critical for meeting flexible packaging performance needs.</li>\u0000 \u0000 <li>Additives improve surface and bulk properties and processability.</li>\u0000 \u0000 <li>Replacing PFAS-containing process aides is a current area of focus.</li>\u0000 \u0000 <li>Sustainability is driving new opportunities for additive development.</li>\u0000 \u0000 <li>New research tools will help accelerate additive development.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1359-1371"},"PeriodicalIF":3.8,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550348","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":"Effect of various saturation levels of hydrogenated nitrile-butadiene rubber on plasticized polyvinyl chloride performance","authors":"Chundie Zhang,&nbsp;Tingting Chen,&nbsp;Ling Zhang,&nbsp;Jun Zhang","doi":"10.1002/vnl.22136","DOIUrl":"10.1002/vnl.22136","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Plasticized polyvinyl chloride (PVC) burns easily and generates a lot of smoke during combustion. In order to improve the comprehensive performance of plasticized PVC, hydrogenated nitrile-butadiene rubber (HNBR) with different degrees of saturation (88%, 94% and 99%) were melt blended with plasticized PVC. Compared to the plasticized PVC without HNBR, the glass transition temperature decreased from −10.6 to −26.0°C, the initiation temperature for thermal degradation increased from 272 to 281°C, the elongation at break enlarged from 316% to 477%, and the permanent set dropped from 72% to 61% when HNBR was added to plasticized PVC at a ratio of 30 parts per hundred parts of resin. However, this resulted in a weakening of tensile strength of the plasticized PVC. Additionally, in the cone calorimetry test, the total smoke production of the PVC/HNBR blends (from 18 to 22 m²) was lower than that of the PVC control (23 m²) and the time to ignition was increased from 26 to 32 s. As a result, PVC/HNBR is expected to gain popularity in the rubber and plastic pipe, wire, and cable sheathing industries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Plasticized PVC improves thermal stability by melt blending with HNBR.</li>\u0000 \u0000 <li>All PVC/HNBR samples have excellent low-temperature resistance.</li>\u0000 \u0000 <li>The addition of HNBR decreases the burning smoke density of plasticized PVC.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1514-1527"},"PeriodicalIF":3.8,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550347","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":"Methacrylic acid grafted inulin and carboxymethyl cellulose as additives in the development of pH sensitive hydrogel matrix for colon targeting","authors":"Pallobi Dutta,&nbsp;Kaushik Mukherjee,&nbsp;Tapan Kumar Giri","doi":"10.1002/vnl.22133","DOIUrl":"10.1002/vnl.22133","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Compression-coated matrix tablets were developed to target budesonide (BUD) in the colonic region using methacrylic acid (MAA) grafted inulin (INU) and carboxymethyl cellulose (CMC). INU was grafted with MAA to impart anionic characteristics to the gum, making it feasible to form a hydrogel by cross-linking with calcium gluconate (CG). The core matrix made up of MAA-g-INU alone disintegrated within 30 min and the core matrix made up of CMC alone completely released BUD within 6 h. The combination of MAA-g-INU and CMC produced a rigid matrix, which was able to completely release BUD after 7 h. Compression coating of the core tablets with MAA-g-INU and CMC did not release BUD in the first 4 h, and complete BUD release took place in the next 4 h. Compression coating led to the formation of a rigid and viscous gel layer outside the core matrices, which hindered BUD release. We conclude that compression coating with CG cross-linked CMC and MAA-g-INU could be used as a matrix for colonic delivery of drugs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Compression coated matrices were developed for colonic delivery of BUD.</li>\u0000 \u0000 <li>The matrix retained drug release up to 4 h in upper gastrointestinal tract (GIT).</li>\u0000 \u0000 <li>The matrix exhibited complete drug release in the next 4 h in the colon.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1485-1502"},"PeriodicalIF":3.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141519804","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 nano-TiO2 in configuration design and sound absorption of polyvinyl alcohol coated composite fabric structure","authors":"Shubing Zhu,&nbsp;Xiaoning Tang","doi":"10.1002/vnl.22134","DOIUrl":"10.1002/vnl.22134","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>With the rapid development of industrialization and population surge in modern society, noise pollution has been considered as a serious threat to human beings. In order to effectively reduce noise, the application of sound absorbing textile materials has gradually increased, also the rapid development of acoustic coating consists of conventional fiber layers and polymers. In this work, the surface morphology, micro-structure and sound absorption properties of polyvinyl alcohol coated fabric and its composites were studied. It was found that the addition of nano-TiO₂ particles can obviously improve the sound absorption properties, and the absorption coefficient is related to fabric thickness. Furthermore, the surface of the coated fabric was compounded with melt-blown nonwoven fabric, thus to fabricate composite sound absorber. This work indicates the good feasibility and promising application prospect of lightweight polyvinyl alcohol coated fabrics in noise reduction engineering.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Highlights</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Combination of fiber layers and polymers for acoustic coating materials.</li>\u0000 \u0000 <li>Adding inorganic nano-TiO₂ particles with different contents.</li>\u0000 \u0000 <li>Different modification methods to improve the dispersion of coating.</li>\u0000 \u0000 <li>Composite structure with reduced thickness and increased sound absorption.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1503-1513"},"PeriodicalIF":3.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502408","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}