摘要
通过自由基加聚反应制备了聚偏氟乙烯(PVDF)/聚苯乙烯磺酸(PSSA)复合膜,通过SEM、EDX、电化学阻抗谱(EIS)和TG等方法表征复合膜的微结构、电化学及尺寸稳定性和力学性能等性能与反应时间的关系.结果表明,随着反应时间的延长,PVDF/PSSA复合膜的含水率、质子传导率逐渐增大.反应时间为8 h的复合膜,其含水率在常温下达到4.4%,质子传导率达到0.375 S/cm,抗拉强度为32.1 MPa。这表明,在采用自由基加聚反应制备的复合膜中形成了稳固的半互穿网络(SIPN)结构,在保持一定的热稳定性能、尺寸稳定性以及力学性能的条件下,其质子传导性能明显改善.
Poly （styrenesuflonic） acid （PSSA） and poly （vinylidene fluoride） （PVDF） composite membranes have been prepared by free radical polymerization. By reading the relationship of the reaction- time and the characteristics of microstructural, electrochemistry and physical properties of PVDF/PSSA Composite Membranes by SEM, EDX, EIS and TG, it is found that both the water content of PVDF/PSSA membrane and proton conductivity did increase if the hot-pressing time was extended. When the hot- pressing reactive time approached the optimum values at 8 hour, the water content reached 4.4% at the room temperature, the proton conductivity reached the maximum （0.375 S/crn） and the resisting strength reached to 32.1 MPa, which shows that the conductivity of the SIPN composite membrane can be improved clearly while holding the better mechanical and thermo property by free radical polymerization.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2012年第4期355-360,共6页
Chinese Journal of Materials Research
基金
国家高技术研究发展计划(863计划)2009AA034400资助项目~~
