Phase behavior of methacrylic acid, poly(ethylene glycol) methyl ether, and poly(ethylene glycol) methacrylate in aqueous solutions

被引：3
|
作者：
Schwahn, Dietmar [1 ]
Pipich, Vitaliy [2 ]
Kasher, Roni [3 ]
机构：
[1] Tech Univ Munich, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85748 Garching, Germany
[2] Julich Ctr Neutron Sci JCNS FRM II, Outstn FRM 2, Lichtenbergstr 1, D-85747 Garching, Germany
[3] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Zuckerberg Inst Water Res, Sede Boqer Campus, IL-84990 Sede Boqer, Israel
来源：
POLYMER | 2017年 / 121卷
关键词：
Associating polymer solution; Lower critical solution behavior; Critical behavior of thermal fluctuations; POLYMER-SOLUTIONS; LIGHT-SCATTERING; MEAN-FIELD; CROSSOVER; POINT; STABILITY; WATER;
D O I：
10.1016/j.polymer.2017.06.011
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The main issue of this manuscript is the exploration of the solubility of methacrylic acid (MA), and the oligomers of poly(ethylene glycol) methyl ether (MPEG), poly(ethylene glycol) methacrylate (PEGMA), and a mixture of MA and PEGMA. These solutions obey to the class of associating aqueous solutions as hydrogen bonding plays an essential role. All solutions are miscible at ambient temperature. Only a small fraction of the order of 10(-5) molecules is involved in a process of aggregation forming about 0.4 mm diameter large colloids whose volume fraction enhances above 70 degrees C. This increase of aggregation is going hand and hand with phase separation of the solution at temperatures at about 70 degrees C and above. Spinodal and binodal temperatures of the solutions were determined from thermal composition fluctuations following mean field and renormalized 3D-Ising behavior in dependence of the distance from the spinodal phase boundary. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：111 / 123
页数：13
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