1 引言
2 结果与讨论
2.1 PPR体系的构建
图1 嵌段结构准聚轮烷的构建、温度和竞争性客体响应过程及利用静电喷雾技术制备PPR薄膜过程示意图Figure 1 The construction of block structured PPR, its thermo and competitive guest response processes, and the schematic diagram of the process of preparing PPR membranes by electrospraying |
2.2 PPR薄膜的制备及其响应性
2.2.1 PPR薄膜的制备
2.2.2 PPR薄膜的竞争客体响应性
图4 在竞争性客体中浸泡不同时间的PPR (10 mg•mL-1, 10 equiv. DEP5A)薄膜的SEM图: (a1) 0 s, (b1) 10 min. (a2), (b2)分别为(a1), (b1)的放大图, (a1), (b1)的插图为对应的接触角数据Figure 4 SEM images of PPR membranes soaked in competitive guests for different times (a1) 0 s, (b1) 10 min. (a2), (b2) are enlarged views of (a1), (b1), respectively. The insets (a1), (b1) are contact angle data |
2.3 复合薄膜的制备及应用
2.3.1 PS纤维膜及PPR/PS复合薄膜的制备
2.3.2 PPR/PS复合薄膜的应用
图6 过滤含罗丹明溶液前后溶液及薄膜的照片对比. (a) PS纤维膜; (b) PPR/PS复合薄膜; (c)含罗丹明溶液及经PS纤维膜和PPR/PS复合薄膜过滤后溶液的紫外-可见吸收光谱图Figure 6 Comparative photographs of the solution color and film before and after filtration of Rhodamine-containing solution using membranes. (a) PS membrane; (b) PPR/PS composite membrane; (c) UV-vis absorption spectra of the Rhodamine-containing solution and the solutions filtered through PS membrane and PPR/PS composite membrane |