SORPTION AND TRANSPORT OF WATER IN NYLON-6 FILMS

被引：76

作者：

HERNANDEZ, RJ ^{[1
]}

GAVARA, R ^{[1
]}

机构：

[1] INST AGROQUIM & TECNOL ALIMENTOS,E-46010 VALENCIA,SPAIN

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1994年 / 32卷 / 14期

关键词：

NYLON-6; WATER SORPTION; WATTER DIFFUSION; CLUSTERING;

D O I：

10.1002/polb.1994.090321407

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Sorption and transport properties of water through films of Nylon-6 were obtained at 5, 23, and 40-degrees-C. Commercially available films were used and a Cahn electrobalance was employed for measuring the water uptake by the polymer samples. Values of the water sorption isotherms are accurately described by the Langmuir/Flory-Huggins dual-mode sorption model. At water activity values below 0.15, the volume fraction of water described by the Langmuir portion of the model was greater than the Flory-Huggins population. Solubility and diffusion coefficients of water, as well as the diffusion activation energy and enthalpy of dissolution of water for Nylon-6, were determined from the sorption experiments. Values obtained support the hypothesis of a bimodal water sorption mode, and the formation of water clusters. (C) 1994 John Wiley & Sons, Inc.

引用

页码：2367 / 2374

页数：8

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