Solution behavior of polyethylene oxide in water as a function of temperature and pressure
Solution behavior of polyethylene oxide in water as a function of temperature and pressure
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DOI：
10.1103/physreve.55.577
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发表时间：
1997-01-01
影响因子：
2.4
通讯作者：
Pincus, P
中科院分区：
文献类型：
--
作者：
Bekiranov, S;Bruinsma, R;Pincus, P
水溶性聚合物的溶液行为模型[基于松山和Tanaka的模型，Phys. Rev，Lett. 65，341（1990）]，其解释了溶剂分子在聚合物链上的氢键。在氢键溶剂分子体积分数较小的限制下，产生的自由能具有标准的Flory-Huggins形式，并且溶剂对来自链上氢键溶剂分数的有效chi参数有良好的贡献。这个简单的理论能够半定量地解释聚氧化乙烯在水中的实验温度-浓度（T-phi）和温度-压力（T-P）相图。
A model of the solution behavior for hydrosoluble polymers [based on a model of Matsuyama and Tanaka, Phys. Rev, Lett. 65, 341 (1990)] is introduced that accounts for hydrogen bonding of solvent molecules onto polymer chains. In the limit of small volume fraction of H-bonded solvent molecules, the resulting free energy has the standard Flory-Huggins form with a good solvent contribution to the effective chi parameter coming from the fraction of solvents H-bonded to the chain. This simple theory is capable of semiquantitatively, explaining the experimental temperature-concentration (T-phi) and temperature-pressure (T-P) phase diagrams of polyethylene oxide in water.