| 학회 | 한국고분자학회 |
| 학술대회 | 2003년 가을 (10/10 ~ 10/11, 부경대학교) |
| 권호 | 28권 2호, p.80 |
| 발표분야 | 기능성 고분자 |
| 제목 | A Novel Method to Make Breath Figure Patterns by Spin Coating under Dry Environment: One-step Preparation of Porous Polymer Films |
| 초록 | We introduce a novel method for fabricating breath figure patterns on a homopolymer film by spin coating of polymer solutions with various solvents. The homopolymers employed in this study were cellulose acetate butyrate (CAB) and mono-carboxylated end-functional polystyrene (PS-mCOOH). Breath figure patterns were generated even when a water-miscible solvent such as tetrahydrofuran (THF) was used as a solvent. We also succeeded in generating breath figure patterns even under a dry environment (relative humidity less than 30 %), when water was directly added into THF solution. With the combination of the spin coating method, pores with few hundreds nanometer to several micrometer have been generated. We found that the pore size becomes larger with increasing water content in THF solution and decreasing rotating speed. This is equivalent to increasing humidity and decreasing evaporation speed, respectively, in the conventional method, direct solvent evaporation under a humid environment. Thus, compared with the conventional method for making breath figure patterns, this method would be very convenient in fabricating large-scale films with various pore sizes. This work was supported by National RND Program for Nano Science and Technology by MOST (M1-0214-00-0230). |
| 저자 | 박민수, 김진곤 |
| 소속 | 포항공과대 |
| 키워드 | breath figure patterns; water-miscible solvent; spin-coating; dry environment |
