標題: Rayleigh-instability-driven morphology transformation of electrospun polymer fibers imaged by in situ optical microscopy and stimulated Raman scattering microscopy
作者: Lee, Ting-Hsien
Chiu, Yu-Jing
Lai, Yu-Cheng
Fan, Ping-Wen
Kuo, Tyng-Yow
Liau, Ian
Chen, Jiun-Tai
應用化學系
Department of Applied Chemistry
公開日期: 1-一月-2014
摘要: Electrospinning is one of the most common methods to prepare polymer fibers with sizes ranging from several nanometers to hundreds of micrometers. In most studies of electrospun polymer fibers, the properties and morphologies of polymer fibers are controlled by changing the electrospinning conditions. Few studies focus on the post-treatments of polymer fibers, which are critical for many fiber-based applications. In this work, we investigate the morphology transformation of electrospun polystyrene (PS) fibers annealed on top of poly(methyl methacrylate) (PMMA) film-coated glass substrates. In situ optical microscopy and stimulated Raman scattering (SRS) microscopy are used to observe the transformation process, which is driven by the Rayleigh instability, the surface tensions, and the interfacial tensions of polymers. Depending on the thickness of the underlying PMMA films, the electrospun PS fibers may transform into hemispheres or disks. The growth rates of the undulating amplitude are also affected by the film thickness.
URI: http://dx.doi.org/10.1039/c4ra06228k
http://hdl.handle.net/11536/124008
ISSN: 2046-2069
DOI: 10.1039/c4ra06228k
期刊: RSC ADVANCES
Issue: 94
起始頁: 51884
結束頁: 51892
顯示於類別:期刊論文


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