Molecular Composites: Block Copolymer of Rigid Rod-Like Polyamide and Amorphous Polyimide

• Main Authors: Huang, Frank, 黃義雄
• Other Authors: Lee, Yu Der
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/05034604220618971972

碩士 === 國立清華大學 === 化學工程研究所 === 82 === Appllying a rigid-rod polymer to reinforce a flexible-coil polymer matrix at the dispersity of molecular level(10nm) is the purpose of molecular composites. Generally speaking, aromatic polyamides have higher modulus and thermal resistance. In the article, the rigid-rod polymer is PBTA(poly-p-(2,2- dimethylbiphenyl)terephthalamide), and the amouphous PI22 as matrix. Block copolymers consisting of liquid crystal system or phenyl-substituted system have been synthesized. The characteristics of polyamide and polyimide will be combined for developing a new performance material. In the study, IR. H1- NMR. and a combination of GPC.IV (inherent viscosity) and TGA have applied to analyze the tructure, components and physical properties of block copolymer We also synthesized a phenyl- substituted polyamide, which is soluble in most of organic solvent without salt(LiCl..). Incorporating copolymers, improve the solubility of block copolymer, and reduce the cost and time of processibility. Finally, we also try to cast film and draw fiber by wet spinning.