Citation: HE Jiasong, FENG Zhihai. CHANGES OF STRUCTURE AND PROPERTIES OF POLY (ETHYLENE TEREPHTHALATE) CAUSED BY IN-SITU POLYMERIZATION OF PYRROLE[J]. Chinese Journal of Polymer Science, ;1991, 9(4): 294-301. shu

CHANGES OF STRUCTURE AND PROPERTIES OF POLY (ETHYLENE TEREPHTHALATE) CAUSED BY IN-SITU POLYMERIZATION OF PYRROLE

HE Jiasong ,
FENG Zhihai

Received Date: 6 September 1990

Conductive polymer composites based on crystalline polymer matrix have been prepared by using an in-situ polymerization process of pyrrole in amorphous poly (ethylene terephthalate) (PET) film. The DSC and WAXD measurement and SEM observation show that liquid-induced crystallization of PET matrix has occurred during the preparation of composite films. Depending upon the equilibrium degree of swelling and crystallinity, the limited depth of penetration of pyrrole molecules results in a skin-core structure of the composite film.The skin layer containing charge transfer intercalated polypyrrole has a surface resistance of 3.5×104.Rigid and heat-resistant polypyrrole molecules formed in PET film increase the tensile modulus and,especially,the rigidity of PET at elevated temperatures.However,they decrease the tensile strength and elongation at break,and impair the thermal ductility of PET.
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