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| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
POLY.P-51 |
| Subject |
Swelling behavior of PNIPAM-clay hydrogels synthesized by γ-ray radiation |
| Authors |
Oh Inwook, Daewon Sohn1,*
Chemistry, Hanyang University, Korea
1Department of Chemistry, Hanyang University, Korea
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| Abstract |
The swelling behavior of poly(n-isopropylacrylamide)-laponite hydrogel by γ-ray irradiation was investigated. Three different methods were used preparing these 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 of it (indirect method) and the other is by potassium persulfate initiator (general method). γ-ray generates radicals and forms 3D networks without any crosslinker. The clay acts like a crosslinker which affects swelling abilities of hydrogels. However, the main factor is the use of γ-ray. 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). As a result, hydrogels by general method showed the best swelling and self-healing properties, and it was because of the structural difference. |
| E-mail |
inwook993@gmail.com |
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121st General Meeting of the KCS