Poly(vinyl alcohol)/GO-MMT Nanocomposites: Preparation, Structure and Properties

查看全文 作　　者：Muhammad [1,2]Raheel;Kun [1]Yao;Jiang [1]Gong;[1]陈学成;Dong-tao [1]Liu;Yi-chao [1]Lin;Dong-mei [1]Cui;Muhammad [2]Siddiq;[1]唐涛

机构地区：[1]State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences;[2]Department of Chemistry, Quaid-i-Azam University

出　　处：《Chinese Journal of Polymer Science》索引2015年第33卷第2期,共10页

基　　金：financially supported by the National Natural Science Foundation of China(No.51233005);CAS-TWAS 2012 Fellowship Award and Higher Education Commission(HEC)of Pakistan 摘　　要：A facile, efficient and environment friendly method is established to prepare poly(vinyl alcohol)(PVA) based graphene oxide-montmorillonite(GO-MMT) nanocomposites in aqueous media. GO-MMT nanohybrid is obtained by the combination of GO and MMT in water without any reducing or stabilizing agents. The formation of GO-MMT nanohybrid is due to the hydrogen bonding and crosslinking effects. The sodium ions within MMT sheets act as crosslinkers between GO sheets and MMT platelets. The resultant nanocomposites are characterized by means of X-ray diffraction(XRD), scanning electron microscopy(SEM), differential scanning calorimetry(DSC), thermogravimetric analysis(TGA) and mechanical testing. Compared to that of pure PVA, PVA nanocomposites show enhanced thermal stabilities and mechanical properties, which results from strong interfacial adhesion of the nanoadditives in PVA matrix. The further increase in the tensile strength and modulus results from strong interaction between PVA chains and layered GO-MMT as well as good mechanical properties of GO-MMT hybrid, compared to PVA/GO and PVA/MMT nanocompsoites. 关键词：纳米复合材料聚乙烯醇机械性能 PVA 制备扫描电子显微镜结构纳米杂化

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Poly(vinyl alcohol)/GO-MMT Nanocomposites: Preparation, Structure and Properties

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