Abstract
In this paper, a novel poly(butyl methacry1ate)/poly(methyl methacrylate-itaconic acid)(PBA/P(MMA-ITA)) latex particles with core/shell structure (CSR) was synthesized by the method of pre-emulsion semi-continuous seeded emulsion polymerization. The core/shell structure of CSR was characterized by TEM and confirmed that the average size of CSR particles was about 330 nm and that of PBA core was about 290 nm. The polyamide 6 (PA 6)/CSR blends (N/CSR) were prepared by the melt-blending technique, and its impact strength reached 40kJ•m-2 (more than 7 times higher than neat PA 6) when the ITA dosage was in the range of 4%~10%. The results of SEM showed that the high toughness of N/CSR blends was the result of the shear deformation of PA 6 matrix induced by cavitation of dispersed phase CSR.
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