| 苯乙烯-异戊二烯星形嵌段共聚物的玻璃化转变温度及中间相松弛 |
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| 引用本文： | 刘景江,汪健,沈家.苯乙烯-异戊二烯星形嵌段共聚物的玻璃化转变温度及中间相松弛[J].应用化学,1986,0(1):41-45. |
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| 作者姓名： | 刘景江 汪健 沈家 |
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| 作者单位： | 1. 中国科学院长春应用化学研究所;2. 吉林大学化学系 |
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| 摘 要： | 用线膨胀仪和动态粘弹谱仪测定了具有不同分子量和不同支化度的规则星形苯乙烯-异戊二烯嵌段共聚物的玻璃化转变温度。Tg(s)和Tg(I)值均依赖于共聚物的形态结构、支化度和分子量。其中分散相的玻璃化转变温度Tg(s)所受影响更为显著。中间相松弛被确认。
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| 收稿时间： | 1985-01-04 |
| 修稿时间： | 1985-09-03 |
THE GLASS TRANSITION TEMPERATURE AND INTERMEDIATE PHASE RELAXATION OF STAR-SHAPED BLOCK COPOLYMERS OF POLYSTYRENE AND POLYISOPRENE |
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| 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,1986,0(1):41-45. |
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| Authors: | Liu Jingjiang Wang Jian Shen Jiacong |
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| Institution: | 1. Changchun Institute of Applied Chemistry, Academia Sinica;2. Department of Chemistry, Jilin University, Changchun |
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| Abstract: | 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 TgI and Tg(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, Tg(S), is found to be more noteworthy. The intermediate phase relaxation is suggested. |
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