AbstractTwo kinds of aromatic–aliphatic polyamide oligomers were newly prepared by the reactant pairs of 3,4′‐oxydianiline–adipic acid and 3,4′‐oxydianiline–azelaic acid. These oligomers were then condensed separately with α, ω‐polybutadienedicarboxylic acid giving two series of polybutadiene–polyamide multiblock copolymers. Properties of four series of polybutadiene–polyamide multiblock copolymers, whose polyamide blocks consisted of not only newly prepared polyamides but also previously synthesized aromatic polyamides derived from 4,4′‐oxydianiline–isophthalic acid and 3,4′‐oxydianiline–isophthalic acid, were investigated on the view point of structure‐property relationship. A larger extent of theTgdepression of polybutadiene phase, and higher tensile strength and modulus were observed in the block copolymers having aromatic polyamides compar
展开▼
