| 环形聚苯乙烯的稀溶液性质——Ⅰ. 环己烷溶液的θ温度 |
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| 引用本文： | 张浩,贺智端.环形聚苯乙烯的稀溶液性质——Ⅰ. 环己烷溶液的θ温度[J].物理化学学报,1988,4(4):366-369. |
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| 作者姓名： | 张浩 贺智端 |
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| 作者单位： | Changchun Institute of Applied Chemistry; Academia Sinica |
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| 摘 要： | 本工作采用光散射测定第二维利系数的方法, 确定了环形聚苯乙烯在环己烷溶液中的θ温度为30 ℃, 比线形聚苯乙烯的θ温度低4.5 ℃。在此温度下及35 ℃, 环形聚苯乙烯(1×10~4
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| 收稿时间： | 1986-12-01 |
| 修稿时间： | 1987-05-30 |
DILUTE SOLUTION PROPERTIES OF RING-SHAPED POLYSTYRENE Ⅰ. θ Temperature in Cyclohexane Solution |
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| Zhang Hao,He Zhiduan.DILUTE SOLUTION PROPERTIES OF RING-SHAPED POLYSTYRENE Ⅰ. θ Temperature in Cyclohexane Solution[J].Acta Physico-Chimica Sinica,1988,4(4):366-369. |
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| Authors: | Zhang Hao He Zhiduan |
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| Institution: | Changchun Institute of Applied Chemistry; Academia Sinica |
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| Abstract: | The second virial coefficients of ring-shaped polystyrene in cyclohexane were determined at different temperature using low angle laser light scattering photometer (LALLS). The temperature obtained at which the second virial coefficient equals zero is 30 ℃. That is the θ temperature of ring-shaped polystyrene in cyclohexane solution. It is 4.5 ℃ lower than that of linear polystyrene (34.5 ℃). The Mark-Houwink equation of ringshaped polystyrene in cyclohexane at 30 ℃ and 35 ℃ were determined. They are η]=5.10×10~(-2) M_W~(0.508), cm~3 g~(-1) η]=2.70×10~(-2) M_W~(0.576), cm~3 g~(-1)respectively. |
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