| 세션명 | 고분자구조 및 물성(III) |
|---|---|
| 발표장 | 포스터장 |
| 논문코드 | 3PS-93 |
| 발표일 | 2019-10-11 |
| 발표시간 | 16:00-17:30 (게시시간: 13:50-17:30) |
| 논문제목 | Storage stability of the waterborne polyurethane dispersion synthesized with polycarbonate diol |
| 발표자 | 강승오 |
| 발표자 소속 | 동아대학교 |
| 저자 | 강승오, 홍예진, 방민지, 김동은, 이상호† |
| 소속 | 동아대학교 |
| 논문초록 | Waterborne polyurethane dispersions (WPUD) were prepared with polycarbonate-diols, 4,4’-methylenebis(cyclohexyl isocyanate), dimethyol propionic acid, and dibutyltin dilaurate catalyst. Conventional acetone process was used to synthesize the WPUDs. We determined the storage stability of the synthesized WPUDs whose physical properties, such as viscosity, particle size, molecular weight, and the content of hard- and soft-segment, were controlled by the molecular weight of polycarbonate-diols (MW = 500, 1000, and 2000 g/mol), the NCO index(=[NCO]/[OH] ratio or eqNCO/eqOH) 1.17 ~ 1.70, and the type of chain extender (1,4-butanediol and ethylene diamine). The storage stability was determined by measuring the variation of the viscosity, the particle size, and phase separation of the WPUDs with time at ambient temperature and ~5 ºC ( 1.0 ºC) |
THE POLYMER SOCIETY OF KOREA