Self-assembly-driven electrospinning: the transition from fibers to intact beaded morphologies

Linge Wang, Paul D. Topham, Oleksandr O. Mykhaylyk, Hao Yu, Anthony J. Ryan, J. Patrick A. Fairclough, Wim Bras

Research output: Contribution to journalArticle

Abstract

Polymer beads have attracted considerable interest for use in catalysis, drug delivery, and photo­nics due to their particular shape and surface morphology. Electrospinning, typically used for producing nanofibers, can also be used to fabricate polymer beads if the solution has a sufficiently low concentration. In this work, a novel approach for producing more uniform, intact beads is presented by electrospinning self-assembled block copolymer (BCP) solutions. This approach allows a relatively high polymer concentration to be used, yet with a low degree of entanglement between polymer chains due to microphase separation of the BCP in a selective solvent system. Herein, to demonstrate the technology, a well-studied polystyrene-poly(ethylene butylene)–polystyrene triblock copolymer is dissolved in a co-solvent system. The effect of solvent composition on the characteristics of the fibers and beads is intensively studied, and the mechanism of this fiber-to-bead is found to be dependent on microphase separation of the BCP.
LanguageEnglish
JournalMacromolecular rapid communications
VolumeEarly view
Early online date2 Jun 2015
DOIs
Publication statusPublished - 2015

Fingerprint

Electrospinning
Self assembly
Block copolymers
Polymers
Microphase separation
Fibers
Polystyrenes
Nanofibers
Drug delivery
Catalysis
Surface morphology
Ethylene
Chemical analysis

Bibliographical note

This is the peer reviewed version of the following article: Wang, L., Topham, P. D., Mykhaylyk, O. O., Yu, H., Ryan, A. J., Fairclough, J. P. A., & Bras, W. (2015). Self-assembly-driven electrospinning: the transition from fibers to intact beaded morphologies. Macromolecular Rapid Communications, Early view, which has been published in final form at 10.1002/marc.201500149. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

Funding: Royal Academy of Engineering for funding a Research Exchange project; Fundamental Research Funds for the Central Universities (No. 2013ZZ0004); and South China University of Technology (No. K412001III).

Supporting Information is available from the Wiley Online Library or from the author.

Keywords

  • beads
  • block copolymers
  • electrospinning
  • microphase separation
  • self-assembly

Cite this

Wang, L., Topham, P. D., Mykhaylyk, O. O., Yu, H., Ryan, A. J., Fairclough, J. P. A., & Bras, W. (2015). Self-assembly-driven electrospinning: the transition from fibers to intact beaded morphologies. Early view. https://doi.org/10.1002/marc.201500149
Wang, Linge ; Topham, Paul D. ; Mykhaylyk, Oleksandr O. ; Yu, Hao ; Ryan, Anthony J. ; Fairclough, J. Patrick A. ; Bras, Wim. / Self-assembly-driven electrospinning : the transition from fibers to intact beaded morphologies. 2015 ; Vol. Early view.
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Self-assembly-driven electrospinning : the transition from fibers to intact beaded morphologies. / Wang, Linge; Topham, Paul D.; Mykhaylyk, Oleksandr O.; Yu, Hao; Ryan, Anthony J.; Fairclough, J. Patrick A.; Bras, Wim.

Vol. Early view, 2015.

Research output: Contribution to journalArticle

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AU - Mykhaylyk, Oleksandr O.

AU - Yu, Hao

AU - Ryan, Anthony J.

AU - Fairclough, J. Patrick A.

AU - Bras, Wim

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