| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Synthesis and Radical Polymerization Properties of Thermal Radical Initiators Based on o-Imino-isourea: The Effect of the Alkyl Side Chain on the Radical Initiation Temperature |
| 초록 |
Four types of thermal radical initiators (TRIs) that are based on o-imino-isourea with cyclohexyl and isopropyl groups were successfully synthesized, namely, C-HexDCC, DiiprDCC, C-HexDIC, and DiiprDIC. The free radical polymerization and thermal properties of those synthesized TRIs were determined via DSC and TGA, respectively. The rates of N–O bond homolysis (Kd) of all the TRIs were calculated from their half-lives determined using NMR spectroscopy, and their theoretical bond dissociation energies (BDEs) were calculated using DFT calculations. Futhermore, to investigate the use of TRIs in curing, we applied them to an automotive clear coating system and monitored the real-time evolution of the elastic modulus (G′) during thermal curing using a rheometer and a rigid-body pendulum rheometer (RPT) for representative DiiprDIC. A clear coat formulated with DiiprDIC was successfully demonstrated in the automotive coating system. |
| 저자 |
이규철1, 김동연2, 정수빈1, 이태희1, 김순천1, 김진철1, 노승만1, 박영일1
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| 소속 |
1한국화학(연), 2UNIST |
| 키워드 |
o-imino isourea; thermal radical initiators; free radical polymerization; dissociation constant; DFT calculation; rheological properties
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| E-Mail |
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