线性温敏性聚合物嵌段调控的ReO4-智能离子印迹聚合物的设计制备及其吸附分离性能研究

首先采用可逆加成断裂聚合法(RAFT)，合成了线性温敏性聚合物聚N,N-二乙基丙烯酰胺(PDEA)，之后将其引入到以丙烯酸(AA)、丙烯酰胺(AM)、N,N-二乙基丙烯酰胺(DEA)为功能单体，ReO₄^-为模板离子，N,N-亚甲基双丙烯酰胺(NMBA)为交联剂，甲醇和水混合溶液(V_甲醇∶V_蒸馏水=3∶7)为溶剂的离子印迹聚合物制备体系，自组装完成后，用Vc-H₂O₂引发聚合，制备出一种线性温敏性聚合物嵌段调控的智能离子印迹聚合物——ReO₄^--IIP。用傅里叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)对ReO₄^--IIP的结构和形貌进行了表征，以电感耦合等离子体发射光源(ICP-AES)为表征手段对ReO₄^--IIP的吸附分离性能进行了评价。结果表明：ReO₄^--IIP被成功...

Study on synthesis,adsorption and desorption performance of linear temperature-sensitive segment polymer regulated intelligent ReO4- ion-imprinted polymer

The linear temperature-sensitive polymer poly(N,N-dimethyl acrylamide) (PDEA) was firstly synthesized by reversible addition-fragmentation chain transfer (RAFT). Subsequently, it was introduced into the ion-imprinted polymer preparation system using acrylic acid (AA), acrylamide (AM), and N,N-diethylacrylamide (DEA) as functional monomers, \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-} as template ion, N,N-methylenebisacrylamide (NMBA) as crosslinker, and a mixture of methanol and water (V_methanol∶V_water=3∶7) as solvent. After the self-assembly was completed, polymerization was initiated by Vc-H₂O₂ to prepare an intelligent ion-imprinted polymer \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP with linear temperature-sensitive polymer block regulation. The structure and morphology of \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and the adsorption and separation performance of \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP was evaluated by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The results showed that \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP was successfully prepared, the saturated adsorption capacity of \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP was 0.1126 mmol/g, the desorption rate was 75%, and it had good selectivity in the binary mixed solution. After 7 adsorption/desorption cycles, \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP still maintains good adsorption-desorption capacity, indicating that \mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}^{-}-IIP has great industrial application prospects.