| 环状高分子对胶体稳定性影响的理论研究 |
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| 引用本文： | 陈学谦,刘洪来.环状高分子对胶体稳定性影响的理论研究[J].功能高分子学报,2007,19(3):237-243. |
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| 作者姓名： | 陈学谦 刘洪来 |
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| 作者单位： | 华东理工大学化学工程联合国家重点实验室,化学系,上海,200237 |
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| 基金项目： | 国家自然科学基金项目(20490200,20676030)，上海市高校网格E-研究院(200303)，教育部博士点基金资助项目(20050251004) |
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| 摘 要： | 将改进的基本度量理论与热力学微扰理论相结合,提出了胶体/高分子系统排空相互作用的IRDFT理论。该理论解释了在实际胶体系统中起重要作用的排斥体积效应和高分子链内相关性的竞争机制。应用该IRDFT,分别以线性链状和环状结构的高分子及其单体为排空元,计算了不同排空元条件下的胶体间排空相互作用。研究表明:对于絮凝破坏,自由环状高分子具有更大的优势。
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| 关 键 词： | 胶体稳定性 排空相互作用 胶体/高分子混合物 改进的基本度量理论 热力学微扰理论 环状高分子 |
| 文章编号： | 1008-9357（2007）03-0237-07 |
| 收稿时间： | 2007-01-30 |
Theoretical Study on Effects of Ring-Like Polymer on Colloidal Stability |
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| CHEN Xue-qian,LIU Hong-lai.Theoretical Study on Effects of Ring-Like Polymer on Colloidal Stability[J].Journal of Functional Polymers,2007,19(3):237-243. |
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| Authors: | CHEN Xue-qian LIU Hong-lai |
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| Institution: | State Key Laboratory of Chemical Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Modified fundamental measure theory and thermodynamic perturbation theory are combined to construct the insert-route density functional theory(IRDFT) about the depletion force(between) colloids dispersed in an athermal polymer solution.The theory explains the competition(between) excluded-volume effect and the chain connectivity which play important role in the actual(colloidal) system.Using this IRDFT approach,the depletion forces are calculated with the deple-(tants) of linear chain-like polymer,ring-like polymer,and their monomers respectively.The study shows that the free ring-like polymer has more advantage on flocculent destruction. |
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| Keywords: | colloidal stability depletion interaction colloid/polymer mixture modified fundamental measure theory thermodynamic perturbation theory ring-like polymer |
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