原位聚合制备有机累托石/聚甲基丙烯酸甲酯纳米复合凝胶聚合物电解质

通过自由基引发,以有机增塑剂为溶剂,用原位聚合的方式制备出有机累托石/聚甲基丙烯酸甲酯organic-modified rectorite/poly(methyl methacrylate),OREC/PMMA]凝胶聚合物电解质(gel polymer electrolyte,GPE),研究了不同的分散工艺对纳米GPE(nano-GPE,NGPE)膜性能的影响.通过X射线衍射和透射电镜探讨NGPE的微观结构,并初步研究了NGPE膜的离子电导率(σ)和5%质量损失率对应的初始热分解温度(θi).结果表明:OREC片层精细呈解离状,良好地分散在凝胶体系中.随OREC添加质量(下同)的增加,NGPE的σ及θi均呈现先增大后减小的趋势.当OREC的添加量为5%时,具有较高的σ和θi.

IN SITU POLYMERIZATION OF ORGANIC-MODIFIED RECTORITE/POLY (METHYL METHACRYLATE) GEL POLYMER ELECTROLYTE

Organic-modified rectorite/poly(methyl methacrylate)(OREC/PMMA)gel polymer electrolyte(GPE)was synthesized through in situ polymerization with a free radical initiator in a solution in which an organic plasticizer acted as the solvent.The influence of properties of nanocomposite gel polymer electrolyte(NGPE)membranes with different methods of dispersing OREC was in-vestigated.The microstructure of NGPE was characterized by X-ray diffraction and transmission electron microscope.The induc-tivity and the thermogravimetric temperature of 5%in mass(the same below)of the NGPE were tested.It is found that OREC layers are very fine exfoliated and dispersed well in the gel system.With the increase of the OREC,both the conductivity and the thermogravimetric temperature at 5%of the NGPE increased first,and then decreased.When the OREC is 5%,both the conduc-tivity and the thermogravimetric temperature of 5%of the NGPE are more excellent than those of the gel polymer electrolyte without OREC.