Aligned Mats from Electrospun Single Fibers

Autor:	Nancy M. Holloway, Laura E. Niklason, Robert L. Clark, Emilie J. Siochi, Caroline Rhim, Lisa S. Carnell, Ralph M. Stephens
Rok vydání:	2008
Předmět:	chemistry.chemical_classification Auxiliary electrode Materials science Polymers and Plastics Organic Chemistry Polymer Biodegradable polymer Electrospinning Inorganic Chemistry chemistry Electric field Polymer chemistry Materials Chemistry Fiber Composite material Nanoscopic scale Polyimide
Zdroj:	Macromolecules. 41:5345-5349
ISSN:	1520-5835 0024-9297
Popis:	Highly aligned electrospun micro- and nanoscale fibers and pseudowoven mats were produced via electrospinning by incorporating an auxiliary counter electrode to create an electric field of controlled geometry and magnitude. Two polymers were examined using this technique: a polyimide (CP2) and a biodegradable polymer, poly(glycolic acid) (PGA). Highly aligned electrospun CP2 fibers were on the order of 10 μm in diameter, and fiber spacing in the spun mats ranged between 25 and 30 μm. Electrospun PGA aligned fibers were on the order of 500 nm in diameter with spacing between fibers ranging from 7 to 10 μm in the spun mats. High-speed videography illustrated the influence of the auxiliary electrode on the elimination of jet whipping and bending instability commonly associated with the electrospinning process. The data presented here demonstrate the direct influence of an opposing electric field on the degree of fiber alignment and control of fiber placement.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3bb2bb92c49baa9d9d0822962c073664 https://doi.org/10.1021/ma8000143 Zobrazit plný text záznamu