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将棒状纳米凹凸棒石黏土加入到α-环糊精(α-CD)和PEO-b-PPO-b-PEO(EPE)嵌段聚合物形成的超分子水凝胶中,构建了一种新型复合水凝胶.用X射线衍射仪(XRD),傅立叶红外光谱仪(FT-IR),扫描电镜(SEM)和流变测试等方法表征了该复合水凝胶的结构和性能.实验结果显示:加入适量纳米凹土不会破坏α-CD/EPE聚轮烷的聚集结晶特性;当复合水凝胶中纳米凹土的质量分数小于2.5%时,适量的纳米凹土能改善水凝胶海绵状结构的连续性,增加海绵状结构的壁厚和孔隙率;随着纳米凹土含量的增加,复合水凝胶的凝胶化时间减少且刚性和机械强度得到了提高.
The rod-shaped nano-attapulgite clay was added to the supramolecular hydrogel formed by α-cyclodextrin (α-CD) and PEO-b-PPO-b-PEO (EPE) Composite hydrogel.The structure and properties of the composite hydrogel were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and rheological test.The experimental results show that: The addition of the appropriate amount of nano-concave soil will not destroy the aggregation crystallization characteristics of α-CD / EPE polyrotaxane. When the mass fraction of nano-concave soil in the composite hydrogel is less than 2.5%, the appropriate amount of nano-clay can improve the hydrogel sponge The continuity of the structure and the increase of the wall thickness and the porosity of the sponge-like structure. With the increase of the content of the nano-concave soil, the gelation time of the composite hydrogel is reduced and the rigidity and the mechanical strength are improved.