Studies on the Rigid-Rigid Block Copolymers (Ⅳ)──Preparation and Properties of Polyetheretherketone/Phenol phthalein Polyarylethersulfone Block Copolymers

Abstract

Abstract: Aseries of rigid-rigid block copolymers of PEEK/phenolphthalein polyarylethersulfone(PDC) were prepared by the condensation of hydroxyl-terminated PDColigomers and fluorine-terminated PEEKoligomers, and some properties of the copolymers were invest igated by DSC,TGA,WAXDand DMA.The results show that the copolymers exhibited no phase separation.The crystalline structure of the copolymer belongs to orthorhombic unit cell structure, PDCcontent in the copolymers has a great influence on the crystallization behaviour.The thermal stability of copolymers decreases obviously with PDCcontent increasing, The copolymers have very good mechanical properties, the modulus and the tensile strength of copolymer are higher than those of pure PEEK.

Key words: PEEK/PDC block copolymer, Crystallization behaviour, Thermal property, Mechanical property

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CAO Jun-Kui, SU Wen-Cheng, LUAN Tian-Gang, CHEN Yan, WU Zhong-Wen . Studies on the Rigid-Rigid Block Copolymers (Ⅳ)──Preparation and Properties of Polyetheretherketone/Phenol phthalein Polyarylethersulfone Block Copolymers[J]. Chem. J. Chinese Universities, 1994, 15(2): 303.

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Studies on the Rigid-Rigid Block Copolymers (Ⅳ)──Preparation and Properties of Polyetheretherketone/Phenol phthalein Polyarylethersulfone Block Copolymers

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