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Citation: Liu Jingjiang, Wang Jian, Shen Jiacong. THE GLASS TRANSITION TEMPERATURE AND INTERMEDIATE PHASE RELAXATION OF STAR-SHAPED BLOCK COPOLYMERS OF POLYSTYRENE AND POLYISOPRENE[J]. Chinese Journal of Applied Chemistry, ;1986, 3(1): 41-45. shu

THE GLASS TRANSITION TEMPERATURE AND INTERMEDIATE PHASE RELAXATION OF STAR-SHAPED BLOCK COPOLYMERS OF POLYSTYRENE AND POLYISOPRENE

1.
1. Changchun Institute of Applied Chemistry, Academia Sinica;
2.
2. Department of Chemistry, Jilin University, Changchun

Received Date: 4 January 1985
Available Online: 3 September 1985

The glass transition temperature of regular star-shaped block copolymers of polystyrene and polyisoprene with different arm length and branch degree are measured by linear dilatometer and dynamic Rheovibron Viscoelastometer. The values of T_gI and T_g(S) depend on the morphology, branch degree and the arm length of these polymers. The effect of these factors on the glass transition temperature of dispersed phase, T_gS), is found to be more noteworthy. The intermediate phase relaxation is suggested.
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