화학공학소재연구정보센터
Polymer, Vol.41, No.2, 663-674, 2000
Synthesis and blends of pentabromobenzyl acrylate copolymers
The synthesis of styrene-pentabromobenzyl acrylate (S-PBBA) and methyl methacrylate-pentabromobenzyl acrylate (MMA-PBBA) copolymers and the phase behavior of their blends is reported. The miscibility of S-PBBA copolymers with polystyrene (PS), tetramethyl polycarbonate (TMPC), and poly(phenylene oxide) (PPO), and of MMA-PBBA copolymers with poly(methyl methacrylate) (PMMA) and polycarbonate (PC) was examined as a function of copolymer composition. Additionally, regions of miscibility were established for blends of both PBBA copolymer families with styrene-acrylonitrile (SAN) rind styrene-maleic anhydride (SMA) copolymers, as well as for S-PBBA copolymers with styrene-methyl methacrylate (SMMA) copolymers. From the isothermal phase boundaries, repeat unit interaction energies with PBBA were estimated using previously established binary interaction energies, a binary interaction model, and the Flory-Huggins theory. In all cases, the interactions with PBBA were found to be highly endothermic. Lower critical solution temperature phase separation was measured for selected blends and compared with predictions based on the Sanchez-Lacombe equation-of-state.