{"title":"使用酰胺功能化水凝胶和氧化锌纳米颗粒增强聚乙烯醇的热稳定性、机械性能和可燃性","authors":"Mohsen Hajibeygi, Hesam Moradi, Henri Vahabi","doi":"10.1002/vnl.22070","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <p>New polyvinyl alcohol (PVA) nanocomposites containing zinc oxide (ZnO) nanoparticles and a hydrogel were prepared by the solution casting method. ZnO nanoparticles grafted co-polymer (Zn-g-CP) was synthesized through the reaction of ZnO nanoparticles with vinyltriethoxysilane and then the radical co-polymerization with 2-acrylamido-2-methylpropane sulfonic acid (AMPS). The amide functionalized hydrogel was prepared via an in situ polymerization of acrylamide and N,N′-methylene bisacrylamide (MBA) as a crosslinker in a solution of PVA. The corresponding results indicated that the simultaneous presence of both Zn-g-CP and hydrogel could significantly increase flammability, thermal stability, and the tensile strength of PVA. The results of the X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) indicated a uniform dispersion of ZnO nanoparticles and an enhanced compatibility with the PVA matrix. Thermogravimetric analysis (TGA) in both N<sub>2</sub> and air atmospheres, indicated that the temperature at 50% mass loss and the char residue values of PVA nanocomposite containing 6 wt% of Zn-g-CP in the presence of hydrogel (PZH12 sample) were enhanced, which was evident by the increased thermal decomposition temperature. The peak of heat release rate (pHRR) value of the PZH12 sample was obtained 56.9% lower than that of the neat PVA demonstrating a significant improvement in flammability behavior. Also, the flame-retardant performance of PZH12 improved, as compared to the pure PVA, with UL-94 V1 rating and LOI of 27.2%. The tensile strength (<i>T</i><sub>s</sub>) and elongation at break (EB) values for the mentioned sample enhanced by 62.5% and 7.2% compared to those of the neat PVA, respectively.</p>\n </section>\n \n <section>\n \n <h3> Highlights</h3>\n \n <div>\n <ul>\n \n <li>Preparation of vinyl functionalized ZnO nanoparticles (VZnO).</li>\n \n <li>ZnO grafted co-polymer (Zn-g-CP) from a radical polymerization on the VZnO surface.</li>\n \n <li>Preparation of an amide-sulfonated hydrogel in the PVA solution.</li>\n \n <li>The effect investigation of hydrogel and Zn-g-CP on the PVA properties.</li>\n \n <li>The results exhibited the enhanced flame retardancy and mechanical properties of PVA.</li>\n </ul>\n </div>\n </section>\n </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 2","pages":"570-584"},"PeriodicalIF":3.8000,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing thermal stability, mechanical properties, and flammability of polyvinyl alcohol using amide-functionalized hydrogel and zinc oxide nanoparticles\",\"authors\":\"Mohsen Hajibeygi, Hesam Moradi, Henri Vahabi\",\"doi\":\"10.1002/vnl.22070\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <p>New polyvinyl alcohol (PVA) nanocomposites containing zinc oxide (ZnO) nanoparticles and a hydrogel were prepared by the solution casting method. ZnO nanoparticles grafted co-polymer (Zn-g-CP) was synthesized through the reaction of ZnO nanoparticles with vinyltriethoxysilane and then the radical co-polymerization with 2-acrylamido-2-methylpropane sulfonic acid (AMPS). The amide functionalized hydrogel was prepared via an in situ polymerization of acrylamide and N,N′-methylene bisacrylamide (MBA) as a crosslinker in a solution of PVA. The corresponding results indicated that the simultaneous presence of both Zn-g-CP and hydrogel could significantly increase flammability, thermal stability, and the tensile strength of PVA. The results of the X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) indicated a uniform dispersion of ZnO nanoparticles and an enhanced compatibility with the PVA matrix. Thermogravimetric analysis (TGA) in both N<sub>2</sub> and air atmospheres, indicated that the temperature at 50% mass loss and the char residue values of PVA nanocomposite containing 6 wt% of Zn-g-CP in the presence of hydrogel (PZH12 sample) were enhanced, which was evident by the increased thermal decomposition temperature. The peak of heat release rate (pHRR) value of the PZH12 sample was obtained 56.9% lower than that of the neat PVA demonstrating a significant improvement in flammability behavior. Also, the flame-retardant performance of PZH12 improved, as compared to the pure PVA, with UL-94 V1 rating and LOI of 27.2%. The tensile strength (<i>T</i><sub>s</sub>) and elongation at break (EB) values for the mentioned sample enhanced by 62.5% and 7.2% compared to those of the neat PVA, respectively.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Highlights</h3>\\n \\n <div>\\n <ul>\\n \\n <li>Preparation of vinyl functionalized ZnO nanoparticles (VZnO).</li>\\n \\n <li>ZnO grafted co-polymer (Zn-g-CP) from a radical polymerization on the VZnO surface.</li>\\n \\n <li>Preparation of an amide-sulfonated hydrogel in the PVA solution.</li>\\n \\n <li>The effect investigation of hydrogel and Zn-g-CP on the PVA properties.</li>\\n \\n <li>The results exhibited the enhanced flame retardancy and mechanical properties of PVA.</li>\\n </ul>\\n </div>\\n </section>\\n </div>\",\"PeriodicalId\":17662,\"journal\":{\"name\":\"Journal of Vinyl & Additive Technology\",\"volume\":\"30 2\",\"pages\":\"570-584\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2023-11-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Vinyl & Additive Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/vnl.22070\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Vinyl & Additive Technology","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/vnl.22070","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Enhancing thermal stability, mechanical properties, and flammability of polyvinyl alcohol using amide-functionalized hydrogel and zinc oxide nanoparticles
New polyvinyl alcohol (PVA) nanocomposites containing zinc oxide (ZnO) nanoparticles and a hydrogel were prepared by the solution casting method. ZnO nanoparticles grafted co-polymer (Zn-g-CP) was synthesized through the reaction of ZnO nanoparticles with vinyltriethoxysilane and then the radical co-polymerization with 2-acrylamido-2-methylpropane sulfonic acid (AMPS). The amide functionalized hydrogel was prepared via an in situ polymerization of acrylamide and N,N′-methylene bisacrylamide (MBA) as a crosslinker in a solution of PVA. The corresponding results indicated that the simultaneous presence of both Zn-g-CP and hydrogel could significantly increase flammability, thermal stability, and the tensile strength of PVA. The results of the X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) indicated a uniform dispersion of ZnO nanoparticles and an enhanced compatibility with the PVA matrix. Thermogravimetric analysis (TGA) in both N2 and air atmospheres, indicated that the temperature at 50% mass loss and the char residue values of PVA nanocomposite containing 6 wt% of Zn-g-CP in the presence of hydrogel (PZH12 sample) were enhanced, which was evident by the increased thermal decomposition temperature. The peak of heat release rate (pHRR) value of the PZH12 sample was obtained 56.9% lower than that of the neat PVA demonstrating a significant improvement in flammability behavior. Also, the flame-retardant performance of PZH12 improved, as compared to the pure PVA, with UL-94 V1 rating and LOI of 27.2%. The tensile strength (Ts) and elongation at break (EB) values for the mentioned sample enhanced by 62.5% and 7.2% compared to those of the neat PVA, respectively.
Highlights
Preparation of vinyl functionalized ZnO nanoparticles (VZnO).
ZnO grafted co-polymer (Zn-g-CP) from a radical polymerization on the VZnO surface.
Preparation of an amide-sulfonated hydrogel in the PVA solution.
The effect investigation of hydrogel and Zn-g-CP on the PVA properties.
The results exhibited the enhanced flame retardancy and mechanical properties of PVA.
期刊介绍：
Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.
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