| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.109 |
| 발표분야 | 기능성 고분자 |
| 제목 | Surface Modification of Waterborne Polyurethane with Fluorinated Oligomer Urethane |
| 초록 | Fluorinated polymers have been widely used in hydrophobic coatings and medical devices because of their excellent environmental stability, water and oil repellency, and low coefficient of friction. Incorporation of fluorine into polymer main chain or side chain is well known to lead to large changes of the surface properties as the fluorinated polymer chains segregates toward the air-side, resulting in considerable decrease in the surface energy. In this study, fluorinated urethane oligomers (SMAs) having repeat unit identical to the hard segment of base polyurethane (PU) have been synthesized and blended with base PU prior to dispersion. XPS and static contact angle measurements showed that surfaces of dispersion cast film are significantly enriched with SMA although SMA and base PU were miscible in bulk phase showing a single glass transition temperature. AFM showed that surface roughness of the dispersion cast film increased over 13 times with the addition of SMA(15%) providing possible mechanism of increased water and oil resistance as well as low friction coefficient of the film. (a) (b) Figure 1. 3D AFM images of the base PU (RMS=2.410nm) (a) and base PU(85) / SMA(15) casted at 100℃ (RMS=33.295nm) (b). Scan area is 5 X 5㎛2. |
| 저자 | 정호영, 김병규 |
| 소속 | 부산대 |
| 키워드 | Polyurethane; Surface Modifing Agent; XPS |
