Poly(p-benzamide)-poly(propylene oxide) block copolymers. new routes to diblock copolymers

摘要

Aromatic polyamides, specially poly (p-benzamide) and poly (p-phenylene terephthalamide) are high modulus and high temperature resistant polymers. Extremely resistant polymers are good in one sense but inadequate in other, i.e. they require special fabrication processes, and the resulting materials may show an excessive rigidity. An answer to these difficulties could be the preparation of block copolymers combining a rigid block with a flexible block, through direct coupling of poly (p-benzamide), PBA, with activated poly(propylene oxide), act-PPO.