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首页> 外文期刊>Journal of Applied Polymer Science >Ethanol-Responsive Characteristics of Polyethersulfone Composite Membranes Blended with Poly(N-isopropylacrylamide) Nanogels
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Ethanol-Responsive Characteristics of Polyethersulfone Composite Membranes Blended with Poly(N-isopropylacrylamide) Nanogels

机译：聚（N-异丙基丙烯酰胺）纳米凝胶与聚醚砜复合膜的乙醇响应特性

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摘要

Ethanol-responsive smart membranes with different microstructures are prepared from blends of polyethersulfone (PES) and poly(N-isopropylacrylamide) (PNIPAM) nanogels by immersion precipitation phase inversion method in a convenient and controllable manner. The introduction of PNIPAM nanogels forms the microporous structures on the surface of the top skin layer and on the pore walls of the finger-like porous sublayer of membranes. The ethanol-responsive characteristics of the proposed PES composite membranes are systematically investigated. With increasing ethanol concentration in the range from 0 to 15 wt %, the transmembrane flux of ethanol solution increases. The microstructures and the resultant ethanol-responsive characteristics of the composite membranes can be regulated by the content of PNIPAM nanogels blended in the membranes. The more the content of PNIPAM nanogels blended in the membranes, the more the number of the submicron pores is, and thus the better the ethanol-responsive characteristics of the composite membranes. The proposed ethanol-responsive smart membranes are expected to be combined with the traditional pervaporation membranes as a smart vavle to achieve continuous and highly efficient ethanol production during the biological fermentation. The preparation technique and results in this study provide valuable guidance for further design and the industrial-scale fabrication of novel composite membranes for application in ethanol separation systems. VC 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41032.
机译：采用浸没沉淀相转化法，以可控的方式由聚醚砜（PES）和聚（N-异丙基丙烯酰胺）（PNIPAM）纳米凝胶的混合物制备了微结构不同的乙醇响应型智能膜。 PNIPAM纳米凝胶的引入在表皮顶层的表面和膜的手指状多孔亚层的孔壁上形成了微孔结构。系统地研究了拟议的PES复合膜的乙醇响应特性。随着乙醇浓度在0至15wt％的范围内增加，乙醇溶液的跨膜通量增加。复合膜的微观结构和所产生的乙醇响应特性可以通过混合在膜中的PNIPAM纳米凝胶的含量来调节。混合在膜中的PNIPAM纳米凝胶的含量越多，亚微米孔的数量越多，因此复合膜的乙醇响应特性越好。预计拟议中的乙醇响应型智能膜将与传统的渗透膜结合在一起作为智能阀，以在生物发酵过程中实现连续高效的乙醇生产。这项研究的制备技术和结果为进一步设计和工业规模制造用于乙醇分离系统的新型复合膜提供了有价值的指导。 VC 2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2014，131，41032。

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