| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
대학원생 구두발표 |
| 제목 |
Polymer Nanotubules Obtained from the Layer-by-Layer Deposition within AAO Membrane Templates with Pore Diameter Less than 100 nm |
| 초록 |
It has been regarded as a challenging task to realize polymer nanotubes with diameter ≤ 200 nm based on the layer-by-layer deposition of polyelectrolytes within nanopores. When porous substrates with diameter ≤ 200 nm were immersed in a polymer solution, polymer chains cannot easily diffuse into the pores and also cannot be readily adsorbed onto the inner template walls due to the entropic entry barrier. The immediate consequence is that the pore mouth is covered and blocked by adsorbing polymers impeding further migration and adsorption of polymer chains within the pores. In present study, we controlled the ratio of polymer dimension to pore diameter by varying the molecular weight of polyelectrolytes and, at the same time, finely tuned the chain conformation and the aggregation condition by adjusting solution pH as well as the valency of salts in solution. By optimizing these controls, we finally succeed in demonstrating well-defined polymeric nanotubules with diameters ≤ 100 nm. |
| 저자 |
조용현1, 이우2, 전영국3, Jan Genzer3, 차국헌1
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| 소속 |
1서울대, 2한국 표준과학 (연), 3North Carolina State Univ. |
| 키워드 |
anodic aluminum oxide; layer-by-layer deposition; multilayer; nanotubule; template
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| E-Mail |
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