Rayleigh-Instability-Driven Morphology Transformation by Thermally Annealing Electrospun Polymer Fibers on Substrates

Ping, Fan; Chen, Wan Ling; Lee, Ting Hsien; Chiu, Yu Jing; Chen, Jiun‐Tai

doi:10.1021/ma300964y

Cited by 36 publications

(41 citation statements)

References 29 publications

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“…As a result, the interfacial areas between the electrospun ABS fibers and the PMMA film decrease, reducing the interfacial energies. The result is consistent with our previous studies on annealing PS fibers on PMMA films …”

Section: Resultssupporting

confidence: 94%

Fabrication, Morphology Control, and Electroless Metal Deposition of Electrospun ABS Fibers

Chiu

Chi

Liu

et al. 2016

Macro Materials & Eng

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Acrylonitrile–butadiene–styrene (ABS) is a polymer composing of acrylonitrile, butadiene, and styrene. It has been widely used in industry because of its good mechanical and physical properties. The fabrication of ABS fibers, however, has been rarely studied. Here the fabrication of ABS fibers has been reported by an electrospinning technique, in which the sizes and morphologies of the fibers can be controlled by adjusting the electrospinning conditions. The morphologies of the ABS fibers can also be transformed by annealing the fibers on poly (methyl methacrylate) (PMMA) films. After annealing, the ABS fibers gradually transform to ABS particles embedded in the PMMA films by a mechanism similar to the Rayleigh‐instability‐type transformation. To extend the applications of the electrospun ABS fibers, electroless deposition of copper is also conducted, resulting in copper‐coated ABS fibers.

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Section: Resultssupporting

confidence: 94%

Fabrication, Morphology Control, and Electroless Metal Deposition of Electrospun ABS Fibers

Chiu

Chi

Liu

et al. 2016

Macro Materials & Eng

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“…For polymer fibers in contact with the substrate, wetting or dewetting on the substrate might occur after thermal annealing. Previously, we studied that electrospun PS fibers can wet the glass substrate after thermal annealing . We also found that a Rayleigh‐instability‐driven morphology transformation can be observed when the electrospun PS fibers are annealed on a PMMA‐coated substrate.…”

Section: Resultsmentioning

confidence: 84%

“…After thermal annealing, the values of WCAs of polymer fibers are close to those of bulk polymer films. Rayleigh‐instability‐type transformation of the electrospun fibers, however, is not observed in this system …”

Section: Introductionmentioning

confidence: 73%

“…We also found that a Rayleigh‐instability‐driven morphology transformation can be observed when the electrospun PS fibers are annealed on a PMMA‐coated substrate. The polymer fibers transform into hemispherical polymer particles, caused by the lower surface tension of PS than that of PMMA and the interfacial tension between PS and PMMA . Here, however, many layers of electrospun fibers on substrates are prepared, and the substrate effect is neglected.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Thermal Annealing on the Surface Properties of Electrospun Polymer Fibers

Chen

Fan

et al. 2013

Macromol. Rapid Commun.

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Electrospun polymer fibers are gaining importance because of their unique properties and applications in areas such as drug delivery, catalysis, or tissue engineering. Most studies to control the morphology and properties of electrospun polymer fibers focus on changing the electrospinning conditions. The effects of post-treatment processes on the morphology and properties of electrospun polymer fibers, however, are little studied. Here, the effect of thermal annealing on the surface properties of electrospun polymer fibers is investigated. Poly(methyl methacrylate) and polystyrene fibers are fist prepared by electrospinning, followed by thermal annealing processes. Upon thermal annealing, the surface roughness of the electrospun polymer fibers decreases. The driving force of the smoothing process is the minimization of the interfacial energy between polymer fibers and air. The water contact angles of the annealed polymer fibers also decrease with the annealing time.

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“…Although the morphologies and properties of electrospun polymer fibers have been extensively studied, the morphology transformation of electrospun fibers has been less investigated . Here, we develop a novel approach to anneal electrospun polymer fibers embedded in polymer films.…”

Section: Introductionmentioning

confidence: 99%

Breaking embedded electrospun fibers (BEEF): Fabrication of polymer spheres encapsulated in polymer films

Tsai

Chiu

et al. 2016

J Polym Sci B Polym Phys

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In this work, a novel method to fabricate polymer spheres encapsulated in polymer films by breaking embedded electrospun fibers (BEEF) was developed. Polymer fibers were first prepared by electrospinning and embedded in other polymer films using a three‐layer deposition method. After thermal annealing, the electrospun fibers transform into individual spheres with regular spacing and sizes. Poly(methyl methacrylate) (PMMA) and polystyrene (PS) are both used as the fiber or film materials. The transformation process can be observed in‐situ by optical microscope (OM) and is similar to the Plateau–Rayleigh instability. The growth rates of the surface undulation of the fibers are calculated, and higher growth rates are observed at higher annealing temperatures. The sizes of the encapsulated polymer spheres agree well with the theoretical predictions. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 2463–2470

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Rayleigh-Instability-Driven Morphology Transformation by Thermally Annealing Electrospun Polymer Fibers on Substrates

Cited by 36 publications

References 29 publications

Fabrication, Morphology Control, and Electroless Metal Deposition of Electrospun ABS Fibers

Fabrication, Morphology Control, and Electroless Metal Deposition of Electrospun ABS Fibers

Effect of Thermal Annealing on the Surface Properties of Electrospun Polymer Fibers

Breaking embedded electrospun fibers (BEEF): Fabrication of polymer spheres encapsulated in polymer films

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