The Synthesis, Characterizion And Release Properties Of Biology Pillared LDHs

Intercalation of amino acids (Ala, Gly, Asp, Glu, Met and His), diflunisal and naproxen into LDHs were investigated in this paper. The solids were characterized by X-ray diffractometry (XRD), Fourier-transform infrared (FTIR), elemental analysis (ICP) and thermogravimetry (TG-DTA). Then, the release properties of these guest moleculars were also studied. The contents of this paper were included as follow:(1) Intercalation of amino acids (Ala, Gly, Asp, Glu, Met and His) into ZnAl-LDHs by co-precipitation method was investigated. XRD results indicated that the solid products were found to have LDHs structure and the basal spacing (003) of Glu-, Met- and His-LDHs were expanded. The expanding interlayer space of Glu-, Met- and His-LDHs were vertically oriented to the LDHs layer, and the Ala-, Gly- and Asp-LDHs were parallel or tilted to the LDHs layer. There was an interaction between the host LDHs and the guest amino acids. Release properties of amino acid-LDHs in the acidic environment (pH=2～3) were...