| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
UCST-type gel phase equilibrium of Hydrogel/ water/ alcohol mixtures |
| 초록 |
We investigated the swelling behaviors of upper critical solution temperature (UCST)-type nano-sized Poly (2-hydroxyethylmethacrylate) (PHEMA) particle gel with the n-alkanol in the presence of water. As the strong water absorptive and biocompatible hydrogel, it is worth to reveal the phase behavior of PHEMA/water. The swelling behaviors of the crosslinked PHEMA particle gel and the phase miscibility of the linear PHEMA mixed with the n-alkanol/water solution were measured. Our data showed that the increase of water in the mixed solvent gradually reduces the swelling temperature. Moreover, the two phase region of PHEMA/water/n-butanol showed sudden expansion around water fraction of 15 vol%. The modified double lattice (MDL) and Flory-Huggins (FH) models were employed to describe the given ternary systems. The MDL model showed better description which is capable to represent the oriented interactions in the systems. |
| 저자 |
김영균, 배영찬
|
| 소속 |
한양대 |
| 키워드 |
Hydrogel; Thermodynamics; Swelling
|
| E-Mail |
|
