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Rheology and melt fracture of poly(lactides)

The wall slip and melt fracture behaviour of several commercial polylactides (PLAs) have been investigated. PLAs with molecular weights greater than a certain value were found to slip, with the slip velocity to increase with decrease of molecular weight. The onset of melt fracture for the high molec...

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Main Authors: Othman, Norhayani, Jazrawi, B., Mehrkhodavandi, P., Hatzikiriakos, S. G.
Format: Book Section
Published: Society of Plastics Engineers (SPE) 2012
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/35818/
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spelling my.utm.358182017-02-04T05:55:50Z http://eprints.utm.my/id/eprint/35818/ Rheology and melt fracture of poly(lactides) Othman, Norhayani Jazrawi, B. Mehrkhodavandi, P. Hatzikiriakos, S. G. TP Chemical technology The wall slip and melt fracture behaviour of several commercial polylactides (PLAs) have been investigated. PLAs with molecular weights greater than a certain value were found to slip, with the slip velocity to increase with decrease of molecular weight. The onset of melt fracture for the high molecular weight PLAs was found to occur at around 0.2 to 0.3 MPa, depending on the geometrical characteristics of the dies. Addition of 0.5wt% of a poly(e-caprolactone) (PCL) into the PLA that exhibits melt fracture was found to be effective in eliminating and delaying the onset of melt fracture to higher shear rates. Society of Plastics Engineers (SPE) 2012 Book Section PeerReviewed Othman, Norhayani and Jazrawi, B. and Mehrkhodavandi, P. and Hatzikiriakos, S. G. (2012) Rheology and melt fracture of poly(lactides). In: Annual Technical Conference - ANTEC, Conference Proceedings. Society of Plastics Engineers (SPE), Newtown, USA, pp. 1170-1174. ISBN 978-162276083-1
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Othman, Norhayani
Jazrawi, B.
Mehrkhodavandi, P.
Hatzikiriakos, S. G.
Rheology and melt fracture of poly(lactides)
description The wall slip and melt fracture behaviour of several commercial polylactides (PLAs) have been investigated. PLAs with molecular weights greater than a certain value were found to slip, with the slip velocity to increase with decrease of molecular weight. The onset of melt fracture for the high molecular weight PLAs was found to occur at around 0.2 to 0.3 MPa, depending on the geometrical characteristics of the dies. Addition of 0.5wt% of a poly(e-caprolactone) (PCL) into the PLA that exhibits melt fracture was found to be effective in eliminating and delaying the onset of melt fracture to higher shear rates.
format Book Section
author Othman, Norhayani
Jazrawi, B.
Mehrkhodavandi, P.
Hatzikiriakos, S. G.
author_facet Othman, Norhayani
Jazrawi, B.
Mehrkhodavandi, P.
Hatzikiriakos, S. G.
author_sort Othman, Norhayani
title Rheology and melt fracture of poly(lactides)
title_short Rheology and melt fracture of poly(lactides)
title_full Rheology and melt fracture of poly(lactides)
title_fullStr Rheology and melt fracture of poly(lactides)
title_full_unstemmed Rheology and melt fracture of poly(lactides)
title_sort rheology and melt fracture of poly(lactides)
publisher Society of Plastics Engineers (SPE)
publishDate 2012
url http://eprints.utm.my/id/eprint/35818/
_version_ 1643649849608896512
score 13.209306

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