Advancement of thermal stability and flame retardancy of polyvinyl alcohol films for heat management featured with recyclability

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-09-30 DOI:10.1016/j.reactfunctpolym.2025.106496

Kshama D. Lokhande, Kartiki Bhosale, Madhuri A. Bhakare, Mahesh P. Bondarde, Pratik S. Dhumal, Surajit Some

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引用次数: 0

Abstract

The incorporation of graphene in polymer matrices have become the topic of interest in the field of developing bioplastics. Dispersion and interfacial interaction of graphene with polymers are two indispensable factors in empowering the mechanical properties of polymers. Polyvinyl alcohol (PVA) excellent film-forming, emulsifying, and adhesive properties, which makes it a versatile candidate in various fields. However, the high flammability of PVA limited its applications in fields where flame retardancy is crucial. In this article, the combustibility of PVA has been successfully reduced by inclusion of graphene and phosphorus (PVA/G/APP) with enhanced mechanical properties. The film of PVA/G/APP has been prepared using the solution casting method, with ammonium polyphosphate serving as the phosphorus source. The obtained film shows massive flame retardancy and good mechanical strength. Moreover, flame retardancy has been achieved by limiting the oxygen index (LOI) to 41 % of LOI value, and no dripping of the polymer matrices was observed during the UL-94 test with a V-0 rating. The flame retardancy and durability of these composite films can make them ideal for use in electronic device enclosures, construction materials, and the automotive industry, where heat management and fire resistance are critical.

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聚乙烯醇热管理膜的热稳定性和阻燃性研究进展

在聚合物基体中掺入石墨烯已成为生物塑料领域的研究热点。石墨烯与聚合物的分散和界面相互作用是决定聚合物力学性能的两个不可或缺的因素。聚乙烯醇（PVA）优异的成膜性、乳化性和粘接性，使其成为各个领域的通用候选材料。然而，聚乙烯醇的高可燃性限制了其在阻燃领域的应用。在本文中，通过加入石墨烯和磷（PVA/G/APP），成功降低了PVA的可燃性，增强了PVA的力学性能。以聚磷酸铵为磷源，采用溶液浇铸法制备了PVA/G/APP薄膜。所得薄膜具有良好的阻燃性和机械强度。此外，通过将氧指数（LOI）限制在LOI值的41%，实现了阻燃性，并且在V-0等级的UL-94测试中没有观察到聚合物基体的滴水。这些复合薄膜的阻燃性和耐用性使其非常适合用于电子设备外壳，建筑材料和汽车工业，其中热管理和防火性至关重要。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.