Polymer-Laponite nanocomposite hydrogels with super-elongation
Polymer-Laponite nanocomposite hydrogels with super-elongation
复制标题
具有超伸长率的聚合物-锂皂石纳米复合水凝胶
DOI：
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发表时间：
2008-04
期刊：
影响因子：
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通讯作者：
Liu Xinxing
中科院分区：
文献类型：
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作者：
Hu Xiaobo;Zhen, Tong;Xiong Lijun;Liu Xinxing
一种新型纳米复合水凝胶可以通过在不含交联剂的锂皂石粘土悬浮液中丙烯酰胺单体的原位自由基聚合来制备。合成锂皂石颗粒是直径为25-30微米、厚度为1纳米的片状圆盘，被认为在水凝胶中起交联剂的作用。这种水凝胶因其高透明度和优异的机械性能而成为智能材料的焦点，其伸长率可达1 300%。迄今为止，只有丙烯酰胺衍生物可用于该聚合反应。本文综述了用于凝胶的单体锂皂石以及具有锂皂石结构和性能的纳米复合水凝胶的合成、结构、物理性能的最新进展。还讨论了这种纳米复合水凝胶在不久的将来的可能发展。
A novel nanocomposite hydrogel can be prepared by in-situ radical polymerization of acrylamide monomers in the suspension of Laponite clay without cross-linkers. Laponite particle is a lamellar disk with diameter of 25-30 mn and thickness of 1 nm, which is believed to take the role of cross-linker in the hydrogel. This kind of hydrogel becomes the focus of smart materials with high transparency and excellent mechanical properties, which can be elongated up to 1 300%. Up to now, only acrylamide derivatives can be used in this polymerization. In this paper, the recent progress on the monomer, Laponite used in the gel and synthesis, structure, physical properties of the nanocomposite hydrogels with the structure and properties of Laponite is reviewed. The possible development of this nanocomposite hydrogel in the near future is also discussed.