Formation of highly aligned, single-layered, hollow fibrous assemblies and the fabrication of large pieces of PLLA membranes

Jen Chang Yang, Sheng Yang Lee, Wen Chin Tseng, Yao Chi Shu, Jen Chieh Lu, Han Shian Shie, Chien Chung Chen

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Large pieces of paper-thin PLLA membranes are prepared and characterized as single-layered hollow fibrous assemblies with an extremely high degree of fiber alignment. The diameter of the electrospun hollow fibers is in the range of some tens of micrometers with a wall thickness of a few micrometers. They are best described as 2D arrays of highly aligned microtubes. The mechanical properties of the membranes are studied. A processing map is constructed using the applied electric field strength and the concentration (viscosity) of the electrospinning dope. The influence of factors such as the field strength and weight and viscosity of the jetted solutions is discussed. The results will help in the future fabrication of highly anisotropic scaffolds for tissue engineering applications.

Original languageEnglish
Pages (from-to)115-122
Number of pages8
JournalMacromolecular Materials and Engineering
Volume297
Issue number2
DOIs
Publication statusPublished - Feb 2012

Keywords

  • coaxial electrospinning
  • epitaxial
  • hollow fibers
  • microtube arrays (MTA)
  • PLLA

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Chemical Engineering(all)

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