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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and swelling behavior of moisture-absorbing polyurethane films impregnated with superabsorbent sodium polyacrylate particles
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Preparation and swelling behavior of moisture-absorbing polyurethane films impregnated with superabsorbent sodium polyacrylate particles

机译：聚丙烯酸酯超吸收性粒子浸渍的吸湿性聚氨酯薄膜的制备及溶胀行为

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摘要

Moisture-absorbing composite films were prepared with superabsorbent sodium polyacrylate particles and solvent-type polyurethane for applications in fabrics. To study the effect of the particle size of sodium polyacrylates on the swelling capacity and deswelling behavior of the composite films, we prepared sodium polyacrylates with different particle sizes ranging from 277 mu m to 485 nm. The rate of absorption and the swelling capacity of the composite films were generally observed to increase with decreasing sodium polyacrylate particle size-except that the water absorbency of the composite film containing the very smallest, 485-nm-size, sodium polyacrylate particles was lower than that yielded by the larger particles, perhaps because these very small sodium polyacrylate particles were impregnated inside the polyurethane matrix rather than on the surface. Meanwhile, the deswelling behavior was not significantly affected by the particle size. Differences in the ionic solutions also significantly affected the swelling capacity of the composite film and altered its swelling kinetics. (C) 2016 Wiley Periodicals, Inc.
机译：用超吸收聚丙烯酸钠颗粒和溶剂型聚氨酯制备吸湿复合膜，以用于织物。为了研究聚丙烯酸钠的粒径对复合膜的溶胀能力和溶胀行为的影响，我们制备了粒径在277μm至485 nm范围内的聚丙烯酸钠。通常观察到复合膜的吸收率和溶胀能力随聚丙烯酸钠颗粒尺寸的减小而增加，不同之处在于，复合膜的最小吸水率低于485 nm，聚丙烯酸钠颗粒的吸水率低于聚丙烯酸钠。较大的颗粒产生的碳纳米管可能是由于这些很小的聚丙烯酸钠颗粒浸渍在聚氨酯基质内部而不是表面。同时，溶胀行为不受颗粒尺寸的显着影响。离子溶液的差异也显着影响复合膜的溶胀能力并改变其溶胀动力学。 （C）2016威利期刊公司

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