Structure–property relationship in polybutadiene–polyamide multiblock copolymers

✍ Scribed by Shin-Ichi Ogata; Hiroyuki Maeda; Masa-Aki Kakimoto; Yoshio Imai

• Publisher: John Wiley and Sons
• Year: 1987
• Tongue: English
• Weight: 763 KB
• Volume: 33
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1987.070330308

✦ Synopsis

Two 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 a, o-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-iphthalic acid, were investigated on the view point of structure-property relationship. A larger extent of the Tg depression of polybutadiene phase, and higher tensile strength and modulus were observed in the block copolymers having aromatic polyamides compared with those having aliphatic ones.