摘要
利用沉淀聚合法,以均苯四酸二酐(PMDA)和4,4′-二氨基二苯醚(ODA)为单体,丁酮(MEK)和N-甲基吡咯烷酮(NMP)混合溶液为溶剂,在常温下,搅拌速度为500r/min,制备了聚酰亚胺的前驱体聚酰胺酸(PAA)。红外光谱表明,所得产物是聚酰胺酸。利用扫描电子显微镜(SEM)分析了混合溶剂的不同体积比对聚酰胺酸微粒子形貌的影响,结果表明,当MEK与NMP的体积比为8:1时,聚酰胺酸微粒子的平均粒径最大,为5.89μm。试制了聚酰亚胺(PI)微粒子,对其进行了SEM、红外光谱分析及热重(TG)分析。
A kind of poly(amic acid) (PAA) microparticles was synthesized,with butanone (MEK) and N-methyl-2-pyrrolidone (NMP) as component solvent,from pyromellitic diahydride (PMDA) and 4,4'-diaminodiphenyl ether(ODA) by precipitation polymerization in room temperature and 500r/min ratio of mechanical agitation.Infrared (IR) spectrum suggested the success of poly(amic acid) microparticles.SEM analysising in morphology of microparticles showed that poly(amic acid) microparticles size increased with the increasing volume ratio of N-methyl-2-pyrrolidone.When the volume ratio of butanone and N-methyl-2-pyrrolidone was 8∶1,the average particle diameter was 5.89μm.Polyimide microparticles were produced by several methods,the chemical structure,the morphology and the thermal properties were analyzed by IR,SEM and TG test.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第4期558-561,共4页
Journal of Functional Materials
基金
国家重点基础研究发展计划(973计划)资助项目(2005CB221204)
关键词
沉淀聚合法
聚酰胺酸
聚酰亚胺
微粒子
precipitation polymerization
poly(amic acid)
polyimide
microparticles