| 丁二烯在聚苯乙烯和丁苯多嵌段共聚物膜中扩散系数的测定与计算 |
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| 引用本文： | 烟伟,郑安呐,刘洪来.丁二烯在聚苯乙烯和丁苯多嵌段共聚物膜中扩散系数的测定与计算[J].华东理工大学学报(自然科学版),2004,30(3):275-279. |
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| 作者姓名： | 烟伟 郑安呐 刘洪来 |
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| 作者单位： | 华东理工大学化学系,上海,200237;国家海洋局天津海水淡化与综合利用研究所,天津,300192;华东理工大学材料科学与工程学院;华东理工大学化学系,上海,200237 |
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| 基金项目： | 国家自然科学基金资助项目(20025618,20236010,29974008)，上海市教委资助项目 |
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| 摘 要： | 用石英弹簧法测定了298．15K和308．15K下丁二烯在聚苯乙烯和丁苯多嵌段共聚物膜中的吸收曲线，结果表明丁二烯在聚苯乙烯膜和丁苯多嵌段共聚物膜中的吸收曲线近似呈费克型，扩散吸收曲线的形态与相对分子质量及其分布无关。用黄永民等的吸附一吸收双模式模型对实验结果进行了关联，获得无限稀释扩散系数和平衡溶解度。
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| 关 键 词： | 丁二烯 扩散系数测定 聚苯乙烯膜 石英弹簧法 |
| 文章编号： | 1006-3080(2004)03-0275-05 |
| 修稿时间： | 2003年6月18日 |
Measurement of Diffusion Coefficients of 1,3-Butadiene in Polystyrene and Styrene/Butene Multi-block Copolymer Membrane |
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| YAN Wei.Measurement of Diffusion Coefficients of 1,3-Butadiene in Polystyrene and Styrene/Butene Multi-block Copolymer Membrane[J].Journal of East China University of Science and Technology,2004,30(3):275-279. |
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| Authors: | YAN Wei |
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| Abstract: | The adsorption curves of 1,3-butadiene in polystyrene (PS) and styrene/butene multi-block copolymer membrane were measured by quartz-spring weighing method at 298.15 K and 308.15 K. The influence of temperature, reduced pressure of 1,3-butadiene, molecular weight and their distribution of polystyrene and copolymer on the adsorption curves was investigated. The experimental data show that the adsorption of isoprene in PS is more difficult than that of 1,3-butadiene in PS at the same temperature. Results show that the small anomalous diffusion of 1,3-butadiene in PS are found under different conditions. The adsorption was correlated using the diffusion model. The correlated results show that the modified equation is in good agreement with the experimental data in most cases. |
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| Keywords: | 1 3-butadiene diffusion coefficients polystyrene membranes quartz-spring method |
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