| 纤维素硫酸半酯钠盐的分子链相对僵硬性测算 |
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| 引用本文： | 林锡权,瞿廷珠.纤维素硫酸半酯钠盐的分子链相对僵硬性测算[J].高分子学报,1988,0(1):12-16. |
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| 作者姓名： | 林锡权 瞿廷珠 |
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| 作者单位： | 中国科学院广州化学研究所
(林锡权)，中国科学院广州化学研究所(瞿廷珠) |
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| 摘 要： | 本文测定了已知分子量的纤维素硫酸半酯钠盐在不同离子强度(I)NaCl溶液中,25℃的特性粘数η],确立了与此相对应的η]与1/I~(1/2)和logs(=△η]/△(I)~(-1/2)与 logη]_(0.1)的线性关系.依 Smidsrod 方程(S=B·η]_(0.1)~v),求得纤维素硫酸半酯钠盐的分子链相对僵硬性参数B值0.088。参数B不仅用作各种高分子链的相对僵硬性的量度,还可以用来定量地表征各种聚电解质溶液特性粘数对外加盐的响应。
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| 关 键 词： | 纤维素硫酸半酯钠 链的僵硬性 盐效应 聚电解质 |
| 收稿时间： | 1985-06-26 |
ESTIMATION OF THE RELATIVE STIFFNESS OF THE MOLECULAR CHAIN OF SODIUM CELLULOSE SULFATE |
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| LIN Xi-quan,QU Ting-zhu.ESTIMATION OF THE RELATIVE STIFFNESS OF THE MOLECULAR CHAIN OF SODIUM CELLULOSE SULFATE[J].Acta Polymerica Sinica,1988,0(1):12-16. |
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| Authors: | LIN Xi-quan QU Ting-zhu |
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| Institution: | Guangzhou Institute of Chemistry; Academic Sinica |
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| Abstract: | The intrinsic viscosities, η] , of three sodium cellulose sulfate samples, with known molecular weight and Degree of Substitution=1, were determined at 25℃ under different ionicstrengths, I, of NaCl. η] vs. and logs vs. log η]0.1 plots are linear. According to Smidsrod's Eq, values empirical parameter B are found to be 0.088. 0.090 and 0.088, respectively. The empirical parameter B, which is a measure of relative stiffness of different polymer chains, can also be used as a measure of the response of η] to the addition of salt for different polyelectrolytes. |
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| Keywords: | Sodium Cellulose SuJfate Halfester Chain Stiffness Salt Effect Polyclectrolyte |
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