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首页> 外文期刊>Journal of Applied Polymer Science >Enhancing water swelling ability and mechanical properties of water-swellable rubber by PAA/SBS nanofiber mats
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Enhancing water swelling ability and mechanical properties of water-swellable rubber by PAA/SBS nanofiber mats

机译：PAA / SBS纳米纤维毡增强水溶胀橡胶的水溶胀能力和机械性能

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摘要

Investigation of the potential use of nanofibers to reinforce composites has gained significance in many applications. In this article, the nanofiber mats of poly(acrylic acid) (PAA) and styrene-butadiene-styrene (SBS) triblock copolymer with composites structure were interweaved by double needle electrospinning process. The multiple nanofiber mats were added to conventional water-swellable rubber (WSR). Improved mechanical and physical properties of WSR were obtained. Enhancement of the swellability of WSR+PAA/SBS nanofiber mats was derived from the PAA constituent absorbing water from the surface into the bulk and introducing random internal water channels between discontinuous superabsorbent polymers. The role of SBS nanofibers in the composite of WSR+PAA/SBS nanofiber mats was more related to the mechanical properties, where the breaking force of the composite increased to twice that of the conventional WSR. Interestingly, after immersion of the WSR+PAA/SBS nanofiber mats in water for 1 week, there was only a slight decrease in their mechanical properties of less than 5% compared to the dry state. The mechanisms and effects of the nanofiber mats in enhancing the mechanical and water swelling properties of WSR are also discussed. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44213.
机译：对纳米纤维增强复合材料的潜在用途的研究在许多应用中已具有重要意义。本文采用双针电纺技术对聚丙烯酸（PAA）和具有复合结构的苯乙烯-丁二烯-苯乙烯（SBS）三嵌段共聚物的纳米纤维毡进行交织。将多个纳米纤维垫添加到常规的水溶胀橡胶（WSR）中。获得了改善的WSR的机械和物理性能。 WSR + PAA / SBS纳米纤维垫的可溶胀性的增强来自PAA成分，该成分吸收了从表面到主体的水，并在不连续的超吸收性聚合物之间引入了随机的内部水通道。 SBS纳米纤维在WSR + PAA / SBS纳米纤维毡复合材料中的作用与机械性能更相关，其中复合材料的断裂力增加到传统WSR的两倍。有趣的是，将WSR + PAA / SBS纳米纤维垫在水中浸泡1周后，与干燥状态相比，其机械性能仅略微下降了不到5％。还讨论了纳米纤维垫增强WSR的机械和水溶胀性能的机理和效果。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44213。

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