| 纯气体在非晶态高分子膜内的吸收机理模型(Ⅰ)理论 |
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| 引用本文： | 曾作祥,王绍亭.纯气体在非晶态高分子膜内的吸收机理模型(Ⅰ)理论[J].化工学报,1992,43(1):1-7. |
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| 作者姓名： | 曾作祥 王绍亭 |
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| 作者单位： | 华东化工学院化工研究所,华东化工学院化工研究所,天津大学化工系 上海200237
,上海200237
,天津300072 |
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| 摘 要： | 提出了一个描述非晶态高分子膜结构特征的模糊数学模型.基于这一模型,作者认为,橡胶态膜内也存在“特征微孔”,并且比玻璃态膜更多.该两种膜的主要吸收机理都是“充孔”机理.运用分子热力学原理,导出了一个普遍化吸收机理模型.本模型假设,非晶态高分子膜内存在两种“格位”,它们对渗透分子的作用各不相同.适用于玻璃态膜的双方式吸收模型和适用于橡胶态膜的Henry定律在这一模型中得到了统一,模型参数也从分子数量级上获得了明确的解释.
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| 关 键 词： | 非晶态 高分子膜 结构 数学模型 |
Sorption Model of Pure Gases in Amorphous Polymers ( I ) Theory |
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| Zeng Zuoxiang and Xue Weilan Wang Shaoting.Sorption Model of Pure Gases in Amorphous Polymers ( I ) Theory[J].Journal of Chemical Industry and Engineering(China),1992,43(1):1-7. |
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| Authors: | Zeng Zuoxiang and Xue Weilan Wang Shaoting |
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| Affiliation: | Zeng Zuoxiang and Xue Weilan Wang Shaoting
(East China Institute of Chemical Technology,Shanghai ) (Department of Chemical Engineering,Tianjin University,Tianjin ) |
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| Abstract: | A model in fuzzy mathematics was proposed to describe the structure ofan amorphous polymer. On the basis of the structural model, the authors believed that there are more microcavities in a rubbery polymer than in a glassy polymer and hole filling is an important sorption mechanism both above and below the glass-transition temperature. Furthermore, the authors assumed that in an amorphous polymer there are two types of voids with different interactions on penetrants. A generalized sorption model based on the above assumption and molecular thermodynamics was developed which incorporated both the successful daul-mode model below the glass-transition temperature and Henrys law above it. The model parameters can be interpreted on the molecular level. |
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