| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
Ring-opening copolymerization of cyclic epoxide and anhydride using a five-coordinate chromium complex with a sterically demanding amino triphenolate ligand |
| 초록 |
An alternating ring-opening copolymerization (ROCOP) of epoxdies (cyclohexene oxide, limonene oxide) and anhydrides (phthalic anhydride, naphthalic anhydride and maleic anhydride) was performed using a chromium complex containing a sterically demanding amino triphenolate ligand in the presence of a cocatalyst (bis(triphenylphosphine)iminium chlrodie (PPNCl) or 4-dimethyl aminopyridine (DMAP)). The polymerization reaction was strongly affected by the types and feed ratio of monomers and cocatalysts. After optimizing the reaction conditions, the chromium complex successfully produced perfectly alternating polyesters in high selectivity (>99% ester linkages), with high molecular weights (up to 43.8 kDa), high glass transition temperatures (Tg up to 159 oC), and low dispersities. In addition, a small amount of catalyst yielded a turnover frequency (TOF) as high as 380 h-1. |
| 저자 |
유호균1, 배대영2, 임현기1, 조민기1, 이은성2, 손경선1
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| 소속 |
1충남대, 2POSTECH |
| 키워드 |
Polymer chemistry; Organic chemistry; Catalyst
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| E-Mail |
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