应用化学2024，Vol.41Issue(12)：1712-1720,9.DOI:10.19894/j.issn.1000-0518.240185
萘基反应型石墨烯分散剂及其在增强聚乙烯醇复合薄膜中的应用
Naphthalene-Based Reactive Dispersant and Its Application in Graphene-Reinforced Polyvinyl Alcohol Films
摘要
Abstract
Graphene has many excellent physical and chemical properties,and it is an ideal nanofiller for the preparation of composite materials. However,graphene is easy to agglomerate and difficult to be dispersed,making it difficult to uniformly hybrid with other matrix materials. In order to solve this problem,a new dispersant with high reactivity using 1,5-diaminonaphthalene and 3-glycidylpropoxytrimethoxysilane as raw materials was prepared. When the mass ratio of dispersant to graphene is 1∶1,the maximum mass concentration of graphene in water can reach 15 mg/mL,and it can exist stably at room temperature for more than 6 months. The dispersant molecule contains multi silanol groups,which are highly reactive and can self-cross-link to form uniform graphene coating. The obtained graphene dispersion was further blended with polyvinyl alcohol (PVA) to obtain a PVA-graphene composite film (PVA-GR). Compared with blank PVA film,its mechanical properties are significantly improved. When the graphene mass fraction is 2％,the elastic modulus of the composite film increases by up to 52.8％. The prepared composite film is expected to be used in the field of high-performance composite materials.关键词
石墨烯/分散剂/自交联/聚乙烯醇/复合材料Key words
Graphene/Dispersant/Self-cross-linking/Polyvinyl alcohol/Composites分类
化学化工引用本文复制引用
王昊,王熙宇,熊英,崔俊硕..萘基反应型石墨烯分散剂及其在增强聚乙烯醇复合薄膜中的应用[J].应用化学,2024,41(12):1712-1720,9.基金项目
国家自然科学基金(No.51902149)资助Supported by the National Natural Science Foundation of China(No.51902149) （No.51902149）
