A UNIFIED MODEL FOR THE STRUCTURE OF POLYMERS IN SEMIDILUTE SOLUTION
A UNIFIED MODEL FOR THE STRUCTURE OF POLYMERS IN SEMIDILUTE SOLUTION
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DOI：
10.1016/0032-3861(84)90292-1
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发表时间：
1984-01-01
期刊：
影响因子：
4.6
通讯作者：
SCHAEFER, DW
中科院分区：
文献类型：
--
作者：
SCHAEFER, DW
建立了一个模型来分析rangeξϱof单体对相关函数的浓度依赖性。在半稀溶液中，发现了半柔性分子的三种浓度状态，并根据稀溶液中链的特征比和Flory相互作用参数χ预测了各种状态之间的交叉点。给出了一个简单的物理解释，解释了浓度依赖ofξϱbased首先是二元接触，然后是更高浓度下的三元接触。为几种常见的聚合物-溶剂体系开发了温度-浓度图。
A model is developed to analyse the concentration dependence of the rangeξϱof the monomer pair correlation function. In semidilute solution, three concentration regimes are found for semiflexible molecules and the crossover points between the various regimes are predicted in terms of the characteristic ratio of the chains in dilute solution and in terms of the Flory interaction parameter χ. A simple physical interpretation is given which explains the concentration dependence ofξϱbased on binary contacts initially and then ternary contacts at higher concentration. Temperature-concentration diagrams are developed for several common polymer-solvent systems.