【摘 要】
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This paper reports the preparation of crosslinked core-shell poly(butyl acrylate )/polystyrene (PBA/PS)and poly(butyl acrylate)/poly(methyl methacrylate) (PBA/P
【机 构】
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Institute of Polymer Science and Engineering,Department of Chemical Engineering,School of Materials
论文部分内容阅读
This paper reports the preparation of crosslinked core-shell poly(butyl acrylate )/polystyrene (PBA/PS)and poly(butyl acrylate)/poly(methyl methacrylate) (PBA/PMMA) nanoparticles via seeded emulsion polymerization and their application in nylon-based composites.A highly cross-linked structure was formed in both the cores and the shells by using a cross-linking agent,which could prevent the migration of hydrophobic PS shells tO the inside of particles.There were covalent bonds on the interfaces between the cores and the shells of both particles.The average particle sizes were 40-50 nm,and the size distributions were narrow.The kinetics of polymerization was investigated.Well-defined core-shell structure and narrow particle size distribution could be achieved under starved conditions of monomer feeding.Furthermore,PBA/PMMA particles were used to fill nylon 6,good dispersion was obtained because of the strong interfacial interaction between the nanoparticles and the nylon 6 matrix and the good deformation ability of nanoparticles,and the toughness and rigidity of the composites were improved evidently.
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