选用聚乙二醇为原料,以环糊精为交联剂和硅烷偶联剂改性的蒙脱石为增强材料制备聚乙二醇/环糊精/蒙脱石(PEG/CD/MMT)复合凝胶.通过傅里叶转换红外光谱(FTIR)和X射线衍射(XRD)对凝胶的结构进行表征;用热失重(TGA)分析复合凝胶内各组分含量以及凝胶的分解温度;通过拉伸、压缩以及流变检测凝胶的力学性能;实验结果表明,凝胶改性前后,其承受最大载荷时的应力提升了至少3倍;凝胶中加入蒙脱石后,复合凝胶材料的力学性能较为优异.原子吸收分光光度计(AAS)和紫外-可见光分光光度计(UV-Vis)测试结果显示复合凝胶对金属和有机物芳香族化合物有较好的吸附性能.这种复合凝胶可在污水处理方面有很好的应用前景.
Polyethylene glycol/cyclodextrin/montmorillonite (PEG/CD/MMT) complex gels were prepared by using PEG as monomer, CD as the cross-linking agent and MMT as reinforced materials.The structure of the gels was characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD).The content of each component and the decomposition temperature of gels were detected by thermal gravimetric analyzer (TGA).The results from tensile, compression and rheometer tests showed the high mechanical performance of the gels.Before and after the modification, the stress of the gels enhanced at least three times when it was under the maximum load.The complex gels had excellent mechanical properties by adding montmorillonite.The test of UV-Vis spectroscopy and atomic absorption spectroscopy (AAS) showed the complex gels had good adsorption properties of the organic and inorganic matter.These results suggested the gels could be as a good adsorption material in the water sewage treatment systems.
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