| 학회 |
한국고분자학회 |
| 학술대회 |
2003년 봄 (04/11 ~ 04/12, 연세대학교) |
| 권호 |
28권 1호, p.341 |
| 발표분야 |
의료용 고분자 부문위원회 |
| 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
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| E-Mail |
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