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首页> 外文期刊>Journal of Applied Polymer Science >Inorganic nanoparticles incorporated in polyacrylonitrile-based mixed matrix membranes for hydrophilic, ultrafast, and fouling-resistant ultrafiltration
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Inorganic nanoparticles incorporated in polyacrylonitrile-based mixed matrix membranes for hydrophilic, ultrafast, and fouling-resistant ultrafiltration

机译：掺入聚丙烯腈基混合基质膜中的无机纳米颗粒，用于亲水，超速和污垢耐污垢超滤

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摘要

Mixed matrix membrane (MMM) structures and performances are greatly affected by the distribution of nanoparticles in the polymeric matrix. Until now, there has been little research on the effects of nanoparticle distribution states on polyacrylonitrile (PAN)-based MMM structures and performances. In this paper, different intermolecular interactions between nanoparticles and PAN molecules were generated by in situ fabricated amino-functionalized SiO2 and TiO2 nanoparticles to create absolutely different distribution states of nanoparticles in a PAN matrix. The results indicated that, due to the strong interactions between amino and cyano groups, SiO2 is distributed in the PAN membranes homogeneously, while most of the TiO2 migrates to the membrane's top surfaces or the walls of pores or even escape from the membranes during the nonsolvent index phase separation (NIPS) process. PAN-TiO2 MMMs have more hydrophilic top surfaces, higher porosity, larger mean pore size, and stronger antifouling performances than pure PAN and PAN-SiO2 membranes. The PAN-TiO2 MMMs have an ultrahigh water flux of 1204.6 L/(m(2) h), which is more than 44 times that of PAN membranes. And the good pore structures and hydrophilicity of the membranes derived from special interactions between in situ TiO2 nanoparticles and PAN molecules can give high-performance PAN-based ultrafiltration membranes a bright future. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47902.
机译：混合基质膜（MMM）的结构和性能进行了由纳米颗粒在聚合物基质中的分布的影响很大。到现在为止，一直存在于纳米粒子分布状态的聚丙烯腈（PAN）的影响很少研究为基础的MMM结构和性能。在本文中，通过原位生成的纳米粒子和PAN分子之间不同的分子间相互作用制造氨基官能化的SiO 2和TiO 2纳米颗粒，以在一个PAN矩阵创建纳米颗粒的完全不同的分布状态。结果表明，由于氨基和氰基之间的强烈的相互作用，将SiO 2分布在PAN膜均匀，而大部分的TiO 2迁移到该膜的顶表面或孔壁或甚至非溶剂期间从膜中逸出指数相分离（NIPS）过程。 PAN-二氧化钛的MMM具有更亲水的顶表面，更高的孔隙率，较大的平均孔径，和更强的防污性能比纯PAN和PAN-的SiO 2膜。泛的TiO2的MMM具有1204.6升/（平方米（2）H），其是PAN膜的超过44倍的超高水通量。而良好的孔隙结构和原位纳米TiO2之间的相互作用的特殊衍生膜的亲水性和PAN分子可以给高性能PAN基超滤膜一个光明的未来。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019年，136，47902。

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