Assembly and Release Behavior of Allopurinol Intercalated Zn/Al-NO_3-LDH Composite

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.