Studies on the Synthesis and propertiesof Thermal Resistant Polyamide-imides

• Main Authors: Chan, Kang-Chin, 詹康琴
• Other Authors: Chang, Teh-Chou
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/55291552212993964455

碩士 === 中原大學 === 化學工程研究所 === 82 === A series of polyamide-imides has been synthesized by the direct polycondensation of the biphenyl diimide-diacid with aromatic diamine using triphenyl-phosphite (TPP) as the condensation agent in NMP-pyridine solution containing 3.5wt% LiCl. This reaction was markedly facilitated to give high inherent viscosity ( 0.24 < ηinh <2.38 ) polyamide-imides in quantitative yield.The thermal properties of polyamide-imides were examined by DSC and TGA. These polyamide-imides possessed glass transition temperature in the range of 285 ~ 337℃ , except the BP-2 and NAI series which could not be detected by DSC measurment. The obtained polyamide-imides exhibited excellent heat resistance and good solubility in N- methyl-2- pyrrolidone (NMP), dimetthyl acetamide (DMAc) , dimethyl foramide (DMF) and dimethyl sulfoxide (DMSO) solvent , except BP-2 system polymers .