標題: | On-Film Annealing: A Simple Method to Fabricate Heterogeneous Polymer Surfaces, Porous Films, and Hemispheres |
作者: | Chen, Jiun-Tai Lee, Po-Hsi Tseng, Hsiao-Fan Chiu, Yu-Jing Kao, Yi-Huei Jeng, Kai-Sheng Liu, Chih-Ting Tsai, Chia-Chan 應用化學系 Department of Applied Chemistry |
公開日期: | 1-七月-2015 |
摘要: | Polymer microspheres have been widely investigated because of their applications in areas such as drug delivery, latex diagnostics, and affinity bioseparators. The effect of annealing on polymer microspheres, however, has been rarely studied. In this work, we demonstrate the morphology transformation of polystyrene (PS) microspheres annealed thermally on poly(methyl methacrylate) (PMMA) films. During the annealing process, the PS microspheres gradually sink into the PMMA films and transform into PS hemispheres, driven by the reduction of the surface and interfacial energies. The effect of the film thicknesses on the morphology transformation is also studied. In addition, porous PMMA films or PS hemispheres can be obtained by removing the PS or the PMMA domains of the polymer composites using cyclohexane or acetic acid, respectively. |
URI: | http://dx.doi.org/10.1021/acsmacrolett.5b00316 http://hdl.handle.net/11536/128049 |
ISSN: | 2161-1653 |
DOI: | 10.1021/acsmacrolett.5b00316 |
期刊: | ACS MACRO LETTERS |
起始頁: | 721 |
結束頁: | 724 |
顯示於類別: | 期刊論文 |