一种可溶性聚酰亚胺的合成及亚胺化研究
Study on imidization and Synthesis of a Soluble Polyimide
选用双酚-A二醚二酐（BPADA）和4, 4’- 二胺基二苯醚（ODA）为单体，间-甲酚为溶剂，用化学亚胺化法合成高分子量可溶性的聚酰亚胺（PI），得到的PI在极性溶剂NMP、DMAc、THF和DMF中有良好的溶解性。通过FT-IR和GPC对PI的结构和化学亚胺化过程中分子量变化进行研究，并利用DMTA对化学亚胺化和热亚胺化PI的性能进行表征。结果表明，化学亚胺化PI具有很高的亚胺化程度，玻璃化转变温度为215℃；热亚胺化P I由于形成了分子链间的交联而不能被溶解，且弹性模量比化学亚胺化PI高
高分子化合物工业
聚酰亚胺溶解性化学亚胺化热亚胺化
武德珍,林志伟,齐胜利.一种可溶性聚酰亚胺的合成及亚胺化研究[EB/OL].(2010-01-29)[2025-09-22].http://www.paper.edu.cn/releasepaper/content/201001-1322.点此复制
A soluble and high molecular weight polyimide(BPADA-ODA) was synthesized based on BPADA and ODA by chemical imidization method. The obtained PI was readily soluble in the polar solvents such as NMP, DMAc, THF and DMF. FT-IR and GPC were used to characterize the structure and the molecular weight of PI during the process of imidization; the properties of PI prepared by chemical and thermal imidization were characterized by DMTA. The results indicated that the glass transition temperature of PI was 215℃. Due to the crosslinking of molecular chain involving in the thermal treatment, the PI prepared by thermal imidization was insoluble and its storage modulus was higher than that of PI prepared by chemical imidization.
polyimidesolubilitychemical imidizationthermal imidization
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