文献类型：期刊文献

英文题名：Impact of modification of carbon black on morphology and performance of polyimide/carbon black hybrid composites

作者：Xue, Pengfei[1];Bao, Yubin[1];Li, Qiuying[1,2,3];Wu, Chifei[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Shanghai Key Lab Polymer Mat, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2010

卷号：12

期号：37

起止页码：11342

外文期刊名：PHYSICAL CHEMISTRY CHEMICAL PHYSICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000281726800020)】；

基金：This work is supported by the National Natural Science Foundation of China (Grant No. 50733001), Shanghai leading Discipline (B502) and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

摘要：The composite films based on polyimide (PI) and chloride modified carbon black (CB-COCl) were prepared by conversion of biphenyltetracarboxylic dianhydride and 4,4'-oxydianiline in the presence of CB-COCl, followed by thermal imidization. The presence of chemical bonds between PI and CB-COCl, proved by FTIR spectra of the composites, has a considerable effect on the properties of PI films. Scanning electron microscopy (SEM) pictures of the PI/CB-COCl membranes showed changed morphology compared to reference membranes without CB-COCl. The thermal stability and structure of the composites were studied by differential scanning calorimetry (DSC), thermogravimetric analyses (TGA) and X-ray diffraction (XRD), respectively. These hybrid films showed an increase in thermal decomposition temperature and a slightly enhanced glass transition temperature. On their mechanical properties, the modulus and ultimate strength of the hybrid films increased and elongation at break decreased with increased CB-COCl content. The surface free energy of polyimide films were determined by means of the contact angle measurements.