SOLVENT SELF-DIFFUSION IN RUBBERY POLYMER-SOLVENT SYSTEMS

SOLVENT SELF-DIFFUSION IN RUBBERY POLYMER-SOLVENT SYSTEMS
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DOI:
10.1021/ma00095a007
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发表时间:
1994-08-15
期刊:
影响因子:
5.5
通讯作者:
VRENTAS, CM
VRENTAS, CM
中科院分区:
化学1区
文献类型:
--
作者:
VRENTAS, JS;VRENTAS, CM

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聚合物-溶剂体系中溶剂自扩散的自由体积理论适用于高于或低于聚合物玻璃化转变温度的橡胶混合物。提出了一种新的参数估算方案,并对较宽的温度和浓度范围内的溶剂自扩散系数进行了较好的预测。
The free-volume theory for solvent self-diffusion in polymer-solvent systems is applied to rubbery mixtures at temperatures both above and below the polymer glass transition temperature. A new parameter evaluation scheme is introduced, and it is shown that the theory provides good predictions for the solvent self-diffusion coefficient over wide temperature and concentration ranges.