TITLE

Nanomechanical thermal analysis of electrospun polymer fibers

AUTHOR(S)
Wei Wang; Bushby, Andrew J.; Barber, Asa H.
PUB. DATE
November 2008
SOURCE
Applied Physics Letters;11/17/2008, Vol. 93 Issue 20, p201907
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thermomechanical properties of individual electrospun semicrystalline polyethylene oxide (PEO) fibers were measured using atomic force microscopy based indentation. Fibers showed a higher elastic modulus than corresponding films despite a lower crystallinity, indicating significant molecular alignment along the principle fiber axis. Heating of the fibers gave a progressive loss in elastic modulus highlighting a dominant amorphous thermomechanical response. This is in contrast to softening of an amorphous phase and melting of a crystalline phase in semicrystalline bulk PEO films.
ACCESSION #
35514094

 

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