| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Synthesis and characterization of SIS triblock copolymer using novel coupling agent by living anionic polymerization |
| 초록 |
Triblock copolymers with an elastomeric center block and glassy end blocks exhibit the properties of thermoplastic elastomers. Synthesis of SI diblock followed by coupling reaction is an industrially acceptable method, which utilizes a readily available cost-effective coupling reagent and gives 5-8% uncoupled diblock copolymer. We synthesized polystyrene-b-polyisoprene at ambient temperature by living anionic polymerization, which was followed by coupling of living macroanions with malonyl chloride. This coupling reaction simultaneously forms well controlled diblock, triblock, and star block copolymers. The block copolymers were characterized by, 1H NMR, FT-IR, TGA and DSC. The molecular weight and polydispersity of the synthesized polymer was determined by size exclusion chromatography (SEC). The molecular weight distribution (MWD) of individual fraction of block copolymer was in the range of 1.02~1.15, which proved the formation of the well controlled copolymers. |
| 저자 |
샤, Santosh Kumar, 강범구, 민준근, 강남구, 이재석
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| 소속 |
광주과학기술원 / Programme for Integrated Molecular System (PIMS) |
| 키워드 |
SIS; anionic polymerization
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| E-Mail |
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