標題: | Morphology transformations of electrospun polymer fibers annealed on polymer films with thickness-controlled growth rates of undulation |
作者: | Kuo, Tyng-Yow Tseng, Hsiao-Fan Chiu, Yu-Jing Chen, Jiun-Tai 應用化學系 Department of Applied Chemistry |
關鍵字: | Electrospun fiber;Thermal annealing;Anisotropic particle |
公開日期: | 3-一月-2018 |
摘要: | Electrospun polymer fibers have attracted great attention in recent years because of their unique properties and applications in various areas such as tissue engineering and drug delivery. It remains a great challenge, however, to understand the morphology and property changes of electrospun polymer fibers induced by post-treatment, especially thermal annealing. In this work, we investigate the morphology evolution of electrospun polystyrene (PS) fibers thermally annealed on poly(vinyl alcohol) (PVA) films. Driven by the surface and interfacial tensions, the PS fibers transform to a series of regularly aligned anisotropic particles embedded in the PVA films via a Rayleigh instability-type transformation. From the in-situ observed optical microscopy (OM) images, higher growth rates of undulated amplitude can be obtained for thinner PVA films, revealing the effect of the underlying glass substrates. (C) 2017 Elsevier Ltd. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.polymer.2017.11.061 http://hdl.handle.net/11536/144271 |
ISSN: | 0032-3861 |
DOI: | 10.1016/j.polymer.2017.11.061 |
期刊: | POLYMER |
Volume: | 134 |
起始頁: | 181 |
結束頁: | 186 |
顯示於類別: | 期刊論文 |