Rheological properties of aqueous solutions of polyethylene glycols with various molecular weights
Rheological properties of aqueous solutions of polyethylene glycols with various molecular weights
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DOI：
10.1134/s0036024411030265
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发表时间：
2011-03-01
影响因子：
0.7
通讯作者：
Semenchenko, A. M.
中科院分区：
文献类型：
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作者：
Shulyak, I. V.;Grushova, E. I.;Semenchenko, A. M.
研究了不同分子量的聚乙二醇（peg）稀水溶液在293.15 ~ 323.15 K范围内运动粘度的依赖关系。计算了这些溶液的固有粘度、哈金斯常数和粘性流动的活化能。对聚合物大分子在溶液中的结构提出了建议。测定了peg -水体系在不同温度下估算聚合物分子量所需的Mark-Kuhn-Hauvink方程常数。
The dependences of the kinematic viscosity of dilute aqueous solutions of polyethylene glycols (PEGs) with various molecular weights in the temperature range of 293.15-323.15 K were investigated. The intrinsic viscosity, the Huggins constant, and the activation energy of a viscous flow were calculated for these solutions. Proposals regarding the structure of polymer macromolecules in solution are made. The constants of the Mark-Kuhn-Hauvink equation required to estimate the polymer molecular weights were determined for PEG-water systems at various temperatures.