Citation: Cheng Shen ZHU, Hong Jing DOU, Su Qin HE, Zhi Shen MO. Crystal Form Transition during Heating of Solvent-induced Crystalline Syndiotactic Polystyrene[J]. Chinese Chemical Letters, ;2000, 11(10): 931-932. shu

Crystal Form Transition during Heating of Solvent-induced Crystalline Syndiotactic Polystyrene

1.
Material Engineering Department, Zhengzhou University, Zhengzhou 450052;
2.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 30 March 2000

The phase transition of two kinds of solvent-induced crystalline syndiotactic polystyrene (sPS), γ -sPS and δ_e-sPS, has been studied via WAXD and DSC. γ-sPS transform to α-sPS at 195-225℃ before melt during heating, whereas δ_e-sPS transform to first γ-sPS and then α-sPS at 100-200℃ and 200-215℃, respectively. The transition of δe-γ and γ-α occurs far below melting point of sPS indicates they are all solid-solid transition.
- Crystal form transition,
- γ-sPS,
- δ_e-sPS,
- α-sPS
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