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