Nanoporous Block Copolymer Membranes for Ultrafiltration: A Simple Approach to Size Tunability

被引：110

作者：

Ahn, Hyungju ^{[1
]}

Park, Sungmin ^{[2
]}

Kim, Sang-Woo ^{[2
]}

Yoo, Pil J. ^{[3
]}

Ryu, Du Yeol ^{[2
]}

Russell, Thomas P. ^{[4
,5
]}

机构：

[1] POSTECH, Pohang Accelerator Lab, Dept Life Sci & Chem Mat, Pohang 790834, South Korea

[2] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea

[3] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol SAINT, Sch Chem Engn, Suwon 440746, South Korea

[4] Univ Massachusetts, Polymer Sci & Engn Dept, Amherst, MA 01003 USA

[5] Tohoku Univ, WPI, AIMR, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

ACS NANO | 2014年 / 8卷 / 11期

关键词：

self-assembly; block copolymers; nanopores; ultrafiltration; membranes; FILMS; FILTRATION; DIFFUSION; NANOCHANNELS; ARRAYS;

D O I：

10.1021/nn505234v

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Nanoporous structures were obtained by the self-assembly of polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) block copolymers (BCP) where, in thick films, cylindrical microdomains were oriented normal to the substrate and air interfaces, and in the interior of the films, the microdomains were randomly oriented. Continuous nanopores that penetrated through the film were readily produced by a simple preferential swelling of the PMMA microdomains. The confined swelling and rapid contraction of PMMA microdomains generated well-defined uniform pores with diameters to 17.5 nm. The size selectivity and rejection of Au nanoparticles (NPs) for these ultrafiltration (UF) membranes were demonstrated, suggesting an efficient route to tunable, noncomponent-degradative UF membranes.

引用

页码：11745 / 11752

页数：8

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