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Measuring the glass-transition temperature in electrospun polyvinyl alcohol fibers using AFM nanomechanical bending tests

Published online by Cambridge University Press:  31 January 2011

Wei Wang  and
Asa H. Barber
Wei Wang
Affiliation:
wei.wang@qmul.ac.uk, Queen Mary University of London, Centre for Materials Research & School of Engineering and Materials Science, London, United Kingdom
Asa H. Barber
Affiliation:
a.h.barber@qmul.ac.uk, Queen Mary University of London, Centre for Materials Research & School of Engineering and Materials Science, London, United Kingdom
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Abstract

The glass transition of individual electrospun PVA fibers was found using an AFM fiber bending technique within a heated chamber. A considerably loss in the measured elastic modulus was observed with temperature when the glass transition temperature was reached. The glass transition temperature was observed to decrease as the electrospun PVA fiber diameter decreased, indicating diameter dependent enhanced polymer chain mobility.

Keywords

polymernanoscalefiber
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1185: Symposium II – Probing Mechanics at Nanoscale Dimensions , 2009 , 1185-II10-01
Copyright
Copyright © Materials Research Society 2009

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