以聚醚胺为单体的超支化聚酰亚胺的制备与表征  

The Preparation and Characterization of Hyper-Branched Polyimides Based on Polyetheramine

作　　者：陈川[1] 黄明富[1] 颜善银[1] 徐祖顺[1,2] 易昌凤[1,2] 

机构地区：[1]湖北大学材料科学与工程学院 [2]功能材料绿色制备与应用省部共建教育部重点实验室,湖北武汉430062

出　　处：《高分子材料科学与工程》2012年第1期147-150,共4页Polymer Materials Science & Engineering

基　　金：湖北省自然科学基金资助项目(2008CDB276)

摘　　要：以聚醚胺(T-403)、4,4′-二氨基二苯醚(ODA)和3,3′,4,4′-二苯甲酮二酐(BTDA)为单体,采用A2+B3法通过热亚胺化和化学亚胺化得到一系列超支化聚酰亚胺(HBPIs)。通过红外光谱测试(FT-IR)、热重分析测试(TGA)、溶解性测试和X射线衍射分析(XRD)对聚合物进行了结构表征和性能测试。FT-IR表明生成了预期的聚合物;TGA表明合成的超支化共聚PI随着共聚体系中芳香二胺的比例增大,其在N2中5%和10%的热失重温度也随之升高;溶解性测试表明合成的超支化聚酰胺酸具有较好的溶解性,化学亚胺化合成的HBPI溶解性良好;X射线衍射分析(XRD)表明聚合物的结晶度较低。A series of hyper-branched polyimides were synthesized via A2＋B3 approach using 3,3′,4,4′-benzophenone tetracarboxylic dianhydride（BTDA） and 4,4′-diaminodiphenyl ether（ODA） and poly（oxyalkylene） triamine（T-403） as materials.The structure and properties of the products were characterized by Fourier transform infrared spectroscopy（FT-IR）,thermal gravimetric analysis（TGA）,X-ray diffraction（XRD） and solubility test.The chemical structure of hyper-branched copolyimides was confirmed by FT-IR spectra.The thermogravimetric curve indicates that PI′s 5% or 10% thermal decomposition temperature in N2 increases as the proportion of ODA increases;the solubility test shows that the obtained hyper-branched poly（amic acid）s and the polyimide obtained by chemical imidization are soluble in several polar aprotic solvents.XRD spectrum demonstrates that the polymers have low-order aggregation structure.

关 键 词：超支化 共缩聚 聚酰亚胺 

分 类 号：TQ342.731[化学工程—化纤工业]