Abstract
A series of stomach cationic aminoalkyl methacrylate copolymer emulsions containing large number of tertiary amino groups in molecular side chain were prepared throughl emulsion polymerization, which take dimethylaminoethyl methacrylate, methyl methacrylate and butyl methacrylate as main raw materials. The The properties of the emulsions were characterized by Fourier transform infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC). And effects of monomer mass ratio and emulsifier system on the properties of emulsions polymerization were also discussed. The results showed that the emulsion performance was stable when the amount of emulsifier was 4.5wt% taking cationic and non-ionic composite emulsifier as emulsifying system. At the same time, it has excellent moisture resistance and stable performance when used in pharmaceutical coating materials.
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