| 학회 |
한국화학공학회 |
| 학술대회 |
2003년 봄 (04/25 ~ 04/26, 순천대학교) |
| 권호 |
9권 1호, p.7 |
| 발표분야 |
고분자 |
| 제목 |
Rapid Swelling-Deswelling Response of pH and Temperature Sensitive Hydrogels |
| 초록 |
Poly(ethylene glycol)(PEG) chains are introduced as graft chains maintaining freely mobile ends in thermo/pH responsive cross-linked N-isopropylacrylamide(NIPAAm) and sulfadimethoxine monomer(SDM) hydrogels by copolymerization of poly(ethylene glycol) methyl ether methacrylate(Mn 1,100). The rapid swelling-deswelling of the PEG graft-type gel is compared with the normal-type gel composed of NIPAAm and SDM. Higher equilibrium swellings at 10℃ and pH 9 are observed in graft-type gel in contrast to the normal-type gel. Rapid deswelling responses are observed for graft-type gel. This result is due to the formation of water release channels within the skin layer by the hydrophilic PEG graft chains. Finally, faster swelling-deswelling changes in response to thermo/pH change were investigated in the PEG-grafted gels. |
| 저자 |
임용균, 이두성
|
| 소속 |
성균관대 |
| 키워드 |
hydrogel; swell-deswell; pH-senstive
|
| E-Mail |
, |
| VOD |
VOD 보기 |
