ULTRAHIGH TENSIBILITY AND STIMULUS-RESPONSE OF NANOCOMPOSITE HYDROGELS
Polymer hydrogels have been intensively studied for their unique properties and potential applications. Recently, Haraguchi et al. reported a novel polymerclay nanocomposite hydrogel (NC gel), which was insitu polymerized with iV-isopropylacrylamide (NIPAm) in aqueous suspension of hectorite clay Laponite. The NC gel exhibited excellent mechanical properties and high transparency. The Laponite platelets worked as multifunctional cross-links in the NC gel with the polymer chains attached to the platelet surface. Laponite, carrying negative charges on the surface and positive charges at the rim, can form a clear and colorless colloidal suspension in water, which is stabilized by the repulsive electrostatic interaction. The aggregation and gelation occur when the Laponite concentration or ionic strength becomes high. Consequently, it is difficult to fabricate responsive NC gels with ionic monomers (e.g., acrylic acid, AA).
Tao Wang Meina Zhu Xiaobo Hu Lijun Xiong Xinxing Liu Zhen Tone
Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
4-5
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）