| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
분자전자소재 및 소자 |
| 제목 |
Two-dimensional nano-periodic structures with thermoresponsive properties |
| 초록 |
Two-dimensional nano-periodic structures with thermoresponsive properties in poly (N-isopropyl acrylamide) (PNIPAM) were fabricated via soft lithography. The polymers swell due to the hydrogen-bonds between polymer chain and water molecule below volume phase transition temperature (VPTT, 33 oC) whereas they shrink at elevated temperatures. This is because hydrogen-bonds became less favorable relative to polymer-polymer and water-water interactions in the solution of PNIPAM above VPTT. An elastic instability of cross-linked PNIPAM structures in a swollen state induces the change in the shape of the void regions of nanostructures from circular to oval. The shape transformations in nano-periodic structures can be important in a variety of fields such as tunable phononic crystals, photonic crystals and bioscaffolds for tissue engineering |
| 저자 |
이정수, 안효진, 장지현
|
| 소속 |
울산과학기술대 |
| 키워드 |
Nanostructure; N-Isopropylacrylamide; Thermoresponsive; Shape memory
|
| E-Mail |
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