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Formation of Highly Aligned, Single‐Layered, Hollow Fibrous Assemblies and the Fabrication of Large Pieces of PLLA Membranes
Author(s) -
Yang JenChang,
Lee ShengYang,
Tseng WenChin,
Shu YaoChi,
Lu JenChieh,
Shie HanShian,
Chen ChienChung
Publication year - 2012
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201100045
Subject(s) - materials science , fabrication , electrospinning , membrane , composite material , viscosity , fiber , anisotropy , polymer , nanotechnology , optics , medicine , alternative medicine , physics , pathology , biology , genetics
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.