摘要
通过三氨基三蝶烯与3,4,9,10-苝四羧酸酐(PTCDA)、均苯四甲酸酐(PMDA)、3,3’,4,4’-联苯二酐(BPDA)以及螺环二酐(SBIDA)的缩聚反应分别合成了4种固有微孔聚酰亚胺材料(Trip-PIMs)。采用傅里叶红外光谱(FT-IR)、固体核磁碳谱(Solid-state 13C-NMR)、扫描电子显微镜(SEM)、热重分析(TG)和氮气吸附等测试手段表征了材料的微孔结构和物理化学性能,测试了材料对有机气体和液体的吸附性能。结果表明:三蝶烯结构的引入使材料获得了较高的比表面积,同时具有良好的溶胀特性;对比烷烃,该材料对胺类和苯类具有更高的吸附率;螺环结构的引入能进一步提高材料骨架的溶胀特性,从而提升材料的吸附能力。
Four kinds of triptycene-based polyimides networks with intrinsic microporosity （Trip-PIMs） were synthesized through one-step solution condensation of triaminotriptycene and 3,4,9,10-perylenetetracarboxylic dianhydride （PTCDA）, pyromellitic dianhydride （PMDA）, 3,3 ＇, 4, 4 ＇-biphthalic anhydride （BPDA） and spirobisindane-linked dianhydride （SBIDA）. The microporous structure and properties of the four polyimides were characterized by FI-IR, solid-state ^13C-NMR, SEM, TG and N2 adsorption. The sorption capability for organic gases and liquids were tested. Results show that the introducing of triptyeene makes the polyimides obtain high Brunner-Emmet-Teller surface areas. Meanwhile, they have a good swelling property. Compared with the alkane, the sorption capabilities of the four polyimides to anime and benzene are better. Distorted structure in the networks makes the porous skeleton easier to swell and dramatically enhances the sorption capability.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2015年第2期109-115,共7页
Journal of Functional Polymers
基金
国家自然科学基金(20974069
21174089)
聚合物分子工程国家重点实验室(K2013-23)
关键词
固有微孔聚酰亚胺
三蝶烯
螺环结构
挥发性有机物
polyimide with intrinsic microporosity
triptycene
distorted structure
volatile organic
