Fast-responsive filters with ionic polymer elastomer and solute permeability

本课题以聚碳酸三甲酯（PTMC）为非晶态聚合物，制备了两亲性嵌段和接枝聚合物。聚合物在水中自发形成聚合物胶体，涉及低极性疏水畴。将醋酸纤维素与两亲性聚合物共混制备了不对称多孔膜。根据溶质渗透率对膜进行了评价，并获得了10000 Da的分子量切断。其基本机理可能是两亲性聚合物在多孔膜表层的表面富集。

In this project, amphiphilic block- and graft-polymer were prepared by using poly(trimethylene carbonate) (PTMC) as an amorphous polymer. The polymers spontaneous formed polymer colloid in water, which involved hydrophobic domain with low polarity. Asymmetrical porous membrane was prepared by blending cellulose acetate with the resulting amphiphilic polymer. The membrane was evaluated in terms of solute permeability, and 10,000 Da of molecular weight cut off was achieved. The fundamental mechanism would be surface enrichment of amphiphilic polymer on the skin layer of the porous membrane.