采用化学交联剂亚甲基双丙烯酰胺（MBA）和物理交联剂无机纳米黏土硅酸镁锂（LMSH）复配制备聚异丙基丙烯酰胺（PNIPAM）水凝胶。随m（MBA）∶m（LMSH）的质量比由9∶1降至为1∶9,水凝胶的透光度和溶胀度增加。凝胶的内部形态取决于交联剂配比,孔洞尺寸随LMSH含量增加而增加。当m（MBA）∶m（LMSH）的质量比为9∶1和1∶9时,温度脉冲响应性最好,但m（MBA）∶m（LMSH）的质量比为1∶9时凝胶对温度的响应最为敏感,20℃下的储能模量最高。DSC结果表明体积相转变温度（VPTT）均在33℃左右,但VPTT范围随LMSH含量增加而窄化。
Physical cross-inker inorganic nanoclay lithium magnesium slhcate hydrate （LMSH） ano cnemmai cross-linker N,N＇-methylene-bis-acrylamide （MBA） with various weight ratios were used together to prepare poly （N-isopropylacrylamide） hydrogel. With decreasing weight ratio of MBA LMSH from 9： 1 to 1：9, the transmittance and swelling degrees of hydrogel increased. When weight ratios of MBA ＂ LMSH are 9 ：1 and 1 ： 9,the hydrogels show better pulsatile responsibility upon temperature. But the hydrogel with a weight ratio of MBA, LMSH at 1 ： 9 shows best temperature-sensitivity and highest storage modulus at Z0~C. The results from DSC show that the volume phase transition temperature（VPTT） of hydrogels also kept at 33℃ or so,but VPTT scope become narrow with the addition of LMSH content.
参考文献
| [1] | Grinstaff MW .Designing hydrogel adhesives for corneal wound repair.[J].Biomaterials,2007(35):5205-5214. |
| [2] | Khademhosseini A;Langer R .Microengineered hydrogels for tissue engineering.[J].Biomaterials,2007(34):5087-5092. |
| [3] | Pan GF;Kurumada KI;Yamada Y .Application of hydrogel for the removal of pollutant phenol in water[J].Journal of the Chinese Institute of Chemical Engineers,2008(4):361-366. |
| [4] | Kazutoshi Haraguchi;Toru Takehisa .Nanocomposite Hydrogels: A Unique Organic-Inorganic Network Structure with Extraordinary Mechanical, Optical, and Welling/De-swelling Properties[J].Advanced Materials,2002(16):1120-1124. |
| [5] | Haraguchi K;Li HJ;Song LY;Murata K .Tunable optical and swelling/deswelling properties associated with control of the coil-to-globule transition of poly(N-isopropylacrylamide) in polymer-clay nanocomposite gels[J].Macromolecules,2007(19):6973-6980. |
| [6] | 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. |
| [7] | Haraguchi K.;Farnworth R.;Ohbayashi A.;Takehisa T. .Compositional effects on mechanical properties of nanocomposite hydrogels composed of poly(N,N-dimethylacrylamide) and clay[J].Macromolecules,2003(15):5732-5741. |
| [8] | Kazutoshi Haraguchi;Huan-Jun Li .Mechanical Properties and Structure of Polymer-Clay Nanocomposite Gels with High Clay Content[J].Macromolecules,2006(5):1898-1905. |
| [9] | 张青松.PP/UHMWPE共混合金增韧增强机理研究[J].菏泽师范专科学校学报,2004(04):36-40,29. |
| [10] | 张青松,张龙柏,赵义平,陈莉.物理/化学共交联水凝胶的溶胀性能[J].天津工业大学学报,2008(06):38-40. |
| [11] | 张青松,赵义平,张龙柏,李洪春,陈莉.物理/化学复合交联水凝胶的结构形态和温敏性[J].高分子材料科学与工程,2010(09):80-83,88. |
| [12] | 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. |
| [13] | 张高奇,查刘生,周美华,马敬红,梁伯润.海藻酸钠和聚N-异丙基丙烯酰胺半互穿网络水凝胶的溶胀动力学研究[J].高分子学报,2005(01):35-39. |
| [14] | 刘守信,张朝阳,房喻,王焕霞,陈奋强.温度/pH敏感性接枝共聚物水凝胶P（DMAEMA-g-NIPAM）的合成及性质研究[J].化学学报,2009(16):1910-1916. |
| [15] | 张建安,刘杰,吴明元,吴庆云,杨建军.聚N-异丙基丙烯酰胺微凝胶的合成和应用进展[J].化工进展,2009(03):424-428. |
| [16] | 李彪,姜永梅,刘洋,武永涛,任怀银,朱苞蕾,朱美芳.聚（N-异丙基丙烯酰胺）/聚丙烯酰胺无机/有机互穿网络水凝胶的制备及表征[J].高分子学报,2009(05):419-424. |
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