以共沉淀法和离子交换法制备别嘌醇插层Zn/Al-NO3-LDH复合材料, 结合XRD、FT-IR、TG-DTA分析表明, 别嘌醇进入LDH层间与层板相互作用形成超分子结构, 提高了别嘌醇的耐酸性和热稳定性, 且共沉淀法制备的别嘌醇插层LDH具有良好的缓释性能. 提出了共沉淀法制备有机分子插层LDH过程中, 存在易于客体进行离子交换和包埋的溶胶-凝胶中间形态的假设, 可提高有机分子插层量.
Allopurinot intercalated Zn/Al-NO3-LDH composite materials were prepared by coprecipitation and ion exchange methods. It was found by XRD, FT-IR and TG-DTA analysis that allopurinol were intercalated into the LDH layers and formed a supramolecular structure in the reaction with laminate. The structure could improved allopurinol acid resistance and thermal stability. The allopurinol intercalated LDH preparaed by coprecipitation method has an excellent sustained-release performance. It was supposed that the intercalation capacity of organic molecules was increased by a Sol-Gel intermediate which was easy for the objects to be ion-exchanged and embedded during the organic molecules intercalating into the LDH layers by coprecipitation method.
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