| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.1225 |
| 발표분야 |
고분자 |
| 제목 |
Estimation of Mechanical Properties of Ionically Complexed FilmsBased on Polymer-Polymer Thin Film Bilayer Wrinkling |
| 초록 |
Wrinkling-based measurement for mechanical properties is simple and versatile technique in determining the Young's modulus of nano composite multilayered thin films. Thermally induced surface wrinkling can take place in polymer-polymer bilayered thin films due to a difference in thermal expansion coefficients between capping layer and supporting layer. In this study, spin-assisted thin films of weakly charged polyelectrolyte multilayerwere deposited on polystyrene (PS) supporting layer. After thermal treatment above the glass transition temperature of PS, wrinkles were formed by thermal instability of the film. It was investigated to predict the Young's modulus of polyelectrolyte multilayer by measuring the wrinkling wavelength that grew with time. The wavelength and amplitude characteristics of wrinkled surface on polyelectrolyte multilayers can be controlled by thickness and the degree of ionization of the polyelectrolyte pairs. In addition, this system can be useful for determining the reliable characteristic of thermal deformation behavior of the polyelectrolyte multilayers due to a formation of uniformly wrinkled structure over a large area. |
| 저자 |
이용만1, 유필진2
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| 소속 |
1성균나노과학기술원, 2성균관대 |
| 키워드 |
wrinkling; polyelectrolyte multilayer; modulus
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| 원문파일 |
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