|
|
| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 18일 (목요일) 11:00~12:30 |
| Code |
POLY.P-31 |
| Subject |
Comparison of PNIPAM hydrogels synthesized by γ-ray radiation and chemical method |
| Authors |
Oh Inwook, Daewon Sohn1,*
Chemistry, Hanyang University, Korea
1Department of Chemistry, Hanyang University, Korea
|
| Abstract |
The mechanical and chemical properties of poly(n-isopropylacrylamide) hydrogels were investigated. Three different methods were used preparing PNIPAM hydrogels; one is synthesized by γ-ray irradiation to the monomer-clay solution (direct method), another is by γ-ray irradiation to the clay solution to get radical itself (indirect method) and the other is by potassium persulfate (KPS) initiator (chemical method). γ-ray generates radicals in the solution and forms 3D network without any crosslinker while the chemical method use KPS as a crosslinker. The saturation ratio and the time of swelling were 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 three methods, only chemical method showed self-healing property. Furthermore, it showed the best swelling property because of the structural difference. The morphology of PNIPAM hydrogel was also investigated to see microscopic structural changes using scanning electron microscope (SEM). |
| E-mail |
inwook993@gmail.com |
|
122nd General Meeting of the KCS