摘要
以丙烯腈(AN)、甲基丙烯酸甲酯(MMA)、丙烯醛(A)为单体,采用乳液聚合法制成一种共聚物———聚(丙烯腈 甲基丙烯酸甲酯 丙烯醛) (PAMA) .将PAMA作为第二共聚物与聚(偏氟乙烯 六氟丙烯) (PVDF -HFP)共混,并向反应体系中添加纳米级SiO2 ,充分混合后利用二次相转移法制得薄膜,并对所得薄膜的断面形貌、吸附性能、热性能、导电性能等进行了测试.研究发现,SiO2 的加入增大了膜中微孔体积,改善了微孔分布,且增大了电解液的吸附量;共聚物PAMA的组成影响薄膜的吸附性能,其中极性较大的丙烯醛单元和丙烯腈单元起着决定性作用;PAMA含量的增加使得共混膜吸附电解液量增加.制得共混膜的离子电导率达2 . 30×10 - 3S cm .
A terpolymer PAMA was synthesized via emulsion polymerization with mono mers of acrylonitrile(AN),methyl methacrylate(MMA),and acrolein(A).The terpolyme r PAMA was blended with poly(vinylidene fluoride-hexafluoropylene)(PVDF-HFP), and nano meter SiO 2 was added to the system.The microporous film was prepared by phase -i mmersion technique.SEM,adoption,thermal properties were used to characterize t he films, an d conduction properties were investigated.The studies showed that the addition o f S iO 2 increased the pore volume,benefited the pore distribution and enhanced the uptake of liquid electrolyte; the composition of terpolymer PAMA,mainly the units of ac rolein and acrylonitrile,affected the properties of the films significantly; the uptake of liquid electrolyte increased with increasing PAMA content. The ionic conductivity of the polymer electrolytes reached 2.30×10 -4 s/cm.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2005年第3期448-452,共5页
Acta Polymerica Sinica
