Combinatorial Methodology for Screening Selectivity in Polymeric Pervaporation Membranes
Combinatorial Methodology for Screening Selectivity in Polymeric Pervaporation Membranes
复制标题
聚合物渗透蒸发膜选择性筛选的组合方法
DOI：
10.1021/acscombsci.5b00006
复制
发表时间：
2015
影响因子：
--
通讯作者：
Hedden, Ronald C.
中科院分区：
文献类型：
--
作者：
Godbole, Rutvik V.;Ma, Lan;Doerfert, Michael D.;Williams, Porsche;Hedden, Ronald C.
本文介绍了一种快速筛选高分子渗透汽化膜分离醇水选择性的组合方法。筛选技术证明乙醇-水分离使用模型聚丙烯酸酯系统。研究的材料是疏水性共聚单体（丙烯酸正丁酯，B）和亲水性共聚单体（丙烯酸2-羟乙酯，H）的交联无规共聚物。制备在两个关键变量H：B比率和交联剂浓度方面具有正交变化的材料基质。对于乙醇和水的混合物，平衡选择性和分配系数通过结合溶胀测量与高通量HPLC分析获得。根据筛选结果，选择了两种共聚物作为渗透汽化膜，以定量的渗透选择性和乙醇通量的进一步研究。所描述的筛选方法具有很好的潜力，以加速寻找新的膜材料，因为它适用于广泛的聚合物化学。
Combinatorial methodology is described for rapid screening of selectivity in polymeric pervaporation membrane materials for alcohol–water separations. The screening technique is demonstrated for ethanol–water separation using a model polyacrylate system. The materials studied are cross-linked random copolymers of a hydrophobic comonomer (n-butyl acrylate, B) and a hydrophilic comonomer (2-hydroxyethyl acrylate, H). A matrix of materials is prepared that has orthogonal variations in two key variables, H:B ratio and cross-linker concentration. For mixtures of ethanol and water, equilibrium selectivities and distribution coefficients are obtained by combining swelling measurements with high-throughput HPLC analysis. Based on the screening results, two copolymers are selected for further study as pervaporation membranes to quantify permeability selectivity and the flux of ethanol. The screening methodology described has good potential to accelerate the search for new membrane materials, as it is adaptable to a broad range of polymer chemistries.