以无机粘土作为交联剂制备了pH/温度双重响应的羧甲基壳聚糖/聚(N-异丙基丙烯酰胺)/粘土半互穿网络(CMCS/PNIPA/Clay semi-IPN)纳米复合水凝胶,对其结构、形态及溶胀行为等进行了研究.实验表明,无机粘土被剥离成纳米尺寸的片层,均匀分散在凝胶网络中,起交联剂的作用,CMCS以线性大分子存在于水凝胶中.CMCS/PNIPA/Clay纳米复合水凝胶在33 ℃出现体积相转变,与传统PNIPA凝胶一致;当pH值在CMCS的等电点附近时,凝胶的溶胀度出现最小值.
参考文献
| [1] | Lee W F;Chen Y J .[J].Journal of Applied Polymer Science,2001,82:2487-2493. |
| [2] | Zhang GQ;Zha LS;Zhou MH;Ma JH;Liang BR .Preparation and characterization of pH- and temperature-responsive semi-interpenetrating polymer network hydrogels based on linear sodium alginate and crosslinked poly(N-isopropylacrylamide)[J].Journal of Applied Polymer Science,2005(5):1931-1940. |
| [3] | Haraguchi K;Takehisa T .[J].Advanced Materials,2002,14:1120-1124. |
| [4] | Haraguchi K.;Takehisa T.;Fan S. .Effects of clay content on the properties of nanocomposite hydrogels composed of poly(N-isopropylacrylamide) and clay[J].Macromolecules,2002(27):10162-10171. |
| [5] | Haraguchi K;Takada T .Characteristic sliding frictional behavior on the surface of nanocomposite hydrogels consisting of organic-inorganic network structure[J].Macromolecular chemistry and physics,2005(15):1530-1540. |
| [6] | Haraguchi K;Li HJ;Matsuda K;Takehisa T;Elliott E .Mechanism of forming organic/inorganic network structures during in-situ free-radical polymerization in PNIPA-clay nanocomposite hydrogels[J].Macromolecules,2005(8):3482-3490. |
| [7] | Haraguchi K;Li H J .[J].Macromolecules,2006,39:1898-1905. |
| [8] | Doi M;Matssumoto M;Hirose Y .[J].Macromolecules,1992,25:5504-5512. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%