Aligned porous stimuli-responsive hydrogels via directional freezing and frozen UV initiated polymerization

被引：79

作者：

Barrow, Michael

Zhang, Haifei

机构：

[1] Department of Chemistry, University of Liverpool

来源：

SOFT MATTER | 2013年 / 9卷 / 09期

关键词：

POLYMERS; SCAFFOLDS; METHACRYLATE; DELIVERY; PHASE; CERAMICS; ALCOHOL; RELEASE;

D O I：

10.1039/c2sm27722k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Directional freezing and frozen UV initiated polymerization have been employed to prepare aligned porous stimuli-responsive hydrogels. Oligo-ethylene glycol methacrylates and dimethylamino ethyl methacrylate monomers are used to produce temperature and pH-responsive hydrogels respectively. The aqueous monomer mixtures are directionally frozen in liquid nitrogen and the frozen samples with dry ice are then polymerized by UV irradiation. Aligned porous morphologies are observed in both dry and hydrated states. The hydrogels exhibit stimuli-responsive behaviour in aqueous conditions and anisotropic compressive strength and diffusion behaviour with respect to freezing direction.

引用

收藏

页码：2723 / 2729

页数：7

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