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
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Abstract
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.
| Item Type: | Book Section |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | caprolactone, geometrical characteristics, high molecular weight, melt fracture, poly lactide |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Chemical Engineering |
| ID Code: | 35818 |
| Deposited By: | Fazli Masari |
| Deposited On: | 04 Dec 2013 01:05 |
| Last Modified: | 04 Feb 2017 05:55 |
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