Abstract
中Appllying a rigid-rod polymer to reinforce a flexible-coilpolymer matrix at the dispersity of molecular level(10nm) isthe 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 asmatrix. Block copolymers consisting of liquid crystal system orphenyl-substituted system have been synthesized. Thecharacteristics of polyamide and polyimide will be combined fordeveloping a new performance material. In the study, IR. H1-NMR. and a combination of GPC.IV (inherent viscosity) and TGAhave applied to analyze the tructure, components and physicalproperties of block copolymer We also synthesized a phenyl-substituted polyamide, which is soluble in most of organicsolvent without salt(LiCl..). Incorporating copolymers, improvethe solubility of block copolymer, and reduce the cost and timeof processibility. Finally, we also try to cast film and drawfiber by wet spinning.