期刊
COLLOID AND POLYMER SCIENCE
卷 289, 期 5-6, 页码 455-473出版社
SPRINGER
DOI: 10.1007/s00396-010-2373-9
关键词
Stimulus responsive; Hydrogel; Nanocomposite; Poly(N-isopropylacrylamide); Clay; Organic/inorganic; Network
资金
- Ministry of Education, Science, Sports, and Culture, Japan [20350109]
- Grants-in-Aid for Scientific Research [23350117, 20350109] Funding Source: KAKEN
A new class of polymer hydrogels, nanocomposite hydrogels (NC gels), consisting of a unique organic (polymer)/inorganic (clay) network structure, was synthesized by in situ free-radical polymerization in the presence of exfoliated clay nanoparticles in an aqueous system. The resulting NC gels overcame most of the disadvantages associated with chemically cross-linked hydrogels, such as mechanical fragility, structural heterogeneity, and slow de-swelling rate. By using thermo-sensitive poly(N-isopropylacrylamide) (PNIPA) as a constituent polymer, NC gels with remarkable mechanical, optical, and swelling properties as well as thermo-sensitivity were obtained. The various properties of NC gels, such as transparency, gel volume, cell culturing, and surface friction changed significantly in response to the temperature and surrounding conditions. All the excellent properties and new stimuli-responsive characteristics of NC gels are attributed to the unique PNIPA/clay network structure. The thermo-sensitivities and the transition temperature can largely be controlled by varying the clay content and by the addition of solutes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据