聚二甲基硅氧烷材料在有机溶剂纳滤膜的研究进展

Progress in the usage of polydimethylsiloxane in organic solvent nanofiltration technology

有机溶剂纳滤技术是一种先进、节能、环保的分离技术,相比于传统的净化与分离工艺,存在着价格与操作的优势.聚二甲基硅氧烷(PDMS),因其较好的非极性溶剂亲和力、耐化学性、耐热性、易制膜等优点,在有机溶剂纳滤膜领域中用途广泛.本文从膜类型和膜制备两个角度对PDMS材料在有机溶剂纳滤膜的研究进展进行了综述,讨论了PDMS材料作为有机复合膜选择层与无机膜接枝层的应用,同时对多种制膜工艺进行了总结.

Organic solvent nanofiltration(OSN)technology,as an advanced,environmental-friendly and energy-saving separation technology,has the merits of low cost and facile operation compared with conventional separation technologies.In a variety of polymeric materials,polydimethylsiloxane(PDMS)has been widely reported for OSN applications for its high affinity to non-polar solvents,good film-forming ability,good chemical and thermal resistance.The article reviews the recent development of PDMS-based membranes in OSN applications from the perspectives of the membrane type and fabrication technology.Related works on PDMS as the selective layer of the composite membrane as well as the grafting material for both polymeric and ceramic membranes are discussed comprehensively.Different membrane fabrication technologies are also summarized here.