|
|
| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
POLY.P-13 |
| Subject |
Characteristics of PNiPAM hydrogels synthesized by γ-ray irradiation |
| Authors |
Oh Inwook, Daewon Sohn1,*
Chemistry, Hanyang University, Korea
1Department of Chemistry, Hanyang University, Korea
|
| Abstract |
The chemical and mechanical properties of poly(N-isopropylacrylamide) (PNiPAM) hydrogels were investigated. Four different methods were used preparing PNiPAM hydrogels; γ-ray was irradiated to monomer-clay solution in direct method (DM), to clay solution in indirect method (IM) and to monomer solution in monomer method (MM), and general method (GM) is synthesized by potassium persulfate (KPS) initiator. γ-ray generates radicals and forms 3-D network without any crosslinker while general method uses N,N’-methylenebisacrylamide as a crosslinker. Swelling properties depending on time was investigated, and the structural changes during swelling were measured by the following techniques; rheometer, Fourier-transform infrared spectroscopy (FTIR) and small-angle X-ray scattering (SAXS). Among these four methods, chemical method showed self-healing property and the best swelling property because of the structural difference. The morphology of PNiPAM hydrogels was also investigated to see microscopic structural using scanning electron microscope (SEM). |
| E-mail |
inwook993@gmail.com |
|
123rd General Meeting of the KCS