UV-stabilized core-shell elastomer was prepared by the emulsion polymerization of butyl acrylate (BA), methyl methacrylate (MMA) and a polymerizable UV-stabilizer, 1, 2, 2, 6, 6-pentamethylpiperidin-4-yl acrylate (PMPA). Effects of reaction temperature, amount of emulsifier and initiator on the polymerization was studied. Nuclear magnetic resonance (^1H-NMR) analysis showed that PMPA is successfully introduced into the elastomer and the chemical composition of the polymer is consistent with the mass ratio of feeding monomers. Transmission electron microscopy (TEM) analysis revealed that the elastomer obtained presents a core-shell structure with an average particle size around 100 nm. The thermogravimetry analysis (TGA) and differential thermal gravimetric (DTG) results revealed that HALS-containing particles provide an improvement in thermal stability in comparison to HALS-free particles, and especially the onset decomposition temperature (Tonset) is greatly improved.
