Preparation and Crystallization Characterization of Acrylate-vinylidene Chloride Copolymers with High Stability
In acrylate-vinylidene chloride semi-seed emulsion polymerization,macromolecular emulsifiers can be produced in situ by introducing reversible addition fragmentation chain transfer(RAFT)reagents,and then partially replace small molecular emulsifiers,and thus high stability copolymer emulsions can be prepared.The optimum addition amount of various additives and initiators in emulsion polymerization was studied,and the effect of different acrylate monomers and VDC monomer copolymerization on emulsion polymerization was studied.Methyl acrylate-vinylidene chloride(VDC-MA),ethyl acrylate-vinylidene chloride(VDC-EA)and butyl acrylate-vinylidene chloride(VDC-BA)copolymers have been successfully synthesized.The crystallinity of copolymer films having excellent barrier properties are characterized by Fourier infrared spectroscopy(FTIR)and X-ray diffraction(XRD),which provided theoretical support for the application of copolymer in packaging fields.
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