Multifunctional photo-crosslinked polymeric ionic hydrogel films

被引：17

作者：

He, Hongkun ^{[1
,2
]}

Adzima, Brian ^{[2
]}

Zhong, Mingjiang ^{[1
]}

Averick, Saadyah ^{[1
]}

Koepsel, Richard ^{[3
]}

Murata, Hironobu ^{[3
]}

Russell, Alan ^{[3
]}

Luebke, David ^{[2
]}

Takahara, Atsushi ^{[4
]}

Nulwala, Hunaid ^{[1
,2
]}

Matyjaszewski, Krzysztof ^{[1
,2
]}

机构：

[1] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA

[2] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA

[3] Carnegie Mellon Univ, Inst Complex Engineered Syst, Pittsburgh, PA 15213 USA

[4] Kyushu Univ, Inst Mat Chem & Engn, Fukuoka 8190395, Japan

来源：

POLYMER CHEMISTRY | 2014年 / 5卷 / 08期

基金：

美国国家科学基金会;

关键词：

TRANSFER RADICAL POLYMERIZATION; POLY(ETHYLENE GLYCOL); MECHANICAL-PROPERTIES; IONOMER MEMBRANES; BLOCK-COPOLYMERS; THIN-FILMS; LINKING; GAS; CO2; POLYSTYRENE;

D O I：

10.1039/c3py01708g

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A facile approach was developed to prepare crosslinked ionic polymer hydrogel films by photo-crosslinking utilizing p-vinylbenzyl trimethylammonium chloride (VBTMACl) or p-vinylbenzyl trimethylammonium hydroxide (VBTMAOH) as the monomer and poly(ethylene oxide) dimethacrylate (PEODMA, M-n = 750) as the crosslinker. The films with different crosslinking degrees (20%, 40%, 60%, 80%, and 100%) were prepared and characterized by swelling measurements, scanning electron microscopy (SEM), UV-visible spectroscopy, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and small-angle X-ray scattering (SAXS). It was found that the mechanical and thermal properties of the films were largely influenced by the contents of the crosslinker in the films. By ion-exchange of the anions in the films with various other anions, the hydrophobicity/hydrophilicity of the films was changed. In addition, fluorescent films were prepared by treatment with fluorescein, and paramagnetic films with FeCl4- as a counter anion showed catalytic activity for Friedel-Crafts alkylation. The ionic films with quaternary ammonium chloride groups displayed antimicrobial activity against Escherichia coli (E. coli) with almost 100% killing efficiency. Multifunctional films with various tunable properties have significant potential for a wide range of applications.

引用

页码：2824 / 2835

页数：12

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