Citation: BU Haishan, JIN Yimin, HU Jialun, YU Tongyin. CRYSTALLIZATION BEHAVIOR OF PURE AND ADDITIVE-CONTAINING POLY (ETHYLENE TEREPHTHALATE)[J]. Chinese Journal of Polymer Science, ;1992, 10(3): 242-249. shu

CRYSTALLIZATION BEHAVIOR OF PURE AND ADDITIVE-CONTAINING POLY (ETHYLENE TEREPHTHALATE)

Received Date: 15 July 1991

The isothermal crystallization of poly (ethylene terephthalate ) (PET),which is free of catalyst, stabilizer, oligomer and diethylene glycol (DEG), was studied by DSC. The crystallization behaviour of pure PET is different from commercial PET and a reasonable explanation is presented. The influences of catalyst, stabilizer, oligomer and DEG on the crystallization of pure PET were examined. It is shown that catalyst (Manganese acetate)and stabilizer (Triphenyl phosphite) result in an increase of the crystallization rate of PET; on the contrary,DEG and oligomer (cyclotetramer) result in a reduction of the crystallization rate.When catalyst and stabilizer coexist together,both of them promote the crystallization at lower temperature,only a smaller effect was found at higher temperature,it is evident that metal phosphite is formed between the catalyst and stabilizer at higher temperature.
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