YOON, HS KIM, KU LEE, J LEE, Y HWANG, SS PARK, TS CHO, J KIM, J AHN, BI CHAR, K QUIRK, RP 2024-01-21T20:40:30Z 2024-01-21T20:40:30Z 2021-09-01 1995-06 1022-1360 https://pubs.kist.re.kr/handle/201004/145078 In-situ polymer blends of polystyrene (PS)/poly(methyl methacrylate) (PMMA) with controlled and variable different compositions and molecular weights were found to be successfully synthesized by ''chain transfer living polymerization (CTLP)'' methodology by a combination of size-exclusion chromatographic analysis, differential scanning calorimetry (DSC), UV/Vis and H-1 NMR spectroscopy, and optical microscopic analysis. The PMMAs prepared in tetrahydrofuran (THF) in the presence of polystyrene exhibit highly syndiotactic stereoregularity (over 70 mol-%) and a glass transition temperature over 120 degrees C. A dispersed morphology was found even for blends with over 31 vol.-% of the weight fraction of one component due to the discrepancy in the molecular weights of two components in the PS/PMMA blends. A ternary polymer blend system having PS/PMMA/PS -block- PMMA can be generated by control of the concentration of fluorene as the chain transfer agent in the CTLP. English WILEY-V C H VERLAG GMBH POLY(METHYL METHACRYLATE) BLENDS ETHYLENE-OXIDE COPOLYMERS MONOMERS IN-SITU POLYMER BLENDS VIA CHAIN TRANSFER LIVING POLYMERIZATION (CTLP) Article 10.1002/masy.19950950126 1 MACROMOLECULAR SYMPOSIA, v.95, pp.303 - 315 MACROMOLECULAR SYMPOSIA 95 303 315 scie scopus A1995RK26200025 2-s2.0-84986870279 Polymer Science Polymer Science Article; Proceedings Paper POLY(METHYL METHACRYLATE) BLENDS ETHYLENE-OXIDE COPOLYMERS MONOMERS polymer blends