Influence of blending and blend morphology on the thermal properties and crystallization behaviour of PLA and PCL in PLA/PCL blends
Author | Luyt, A.S. |
Author | Gasmi, S. |
Available date | 2017-03-01T09:59:26Z |
Publication Date | 2016-05 |
Publication Name | Journal of Materials Science |
Identifier | http://dx.doi.org/10.1007/s10853-016-9784-z |
Citation | Luyt, A.S. & Gasmi, S. "Influence of blending and blend morphology on the thermal properties and crystallization behaviour of PLA and PCL in PLA/PCL blends" Journal of Materials Science 2016, Volume 51, Issue 9, pp 4670–4681 |
ISSN | 0022-2461 |
Abstract | In this paper, we reported on the influence of PCL on the cold crystallization behaviour of PLA in different PLA/PCL blends, and on the influence of blending with PLA on the PCL crystallization behaviour and kinetics. The presence of PCL in the blends had a strong influence on PLA cold crystallization, and the extent of this influence was determined by the blend morphology. Successive self-nucleation and annealing (SSA) analysis of PCL crystallization in the blends showed that the presence and amount of PLA in the blends had a strong influence on the crystal size distribution in the main crystalline fraction of PCL. A kinetic analysis of the crystallization of neat PCL and PCL in the blends showed that the crystallization mechanism of the neat PCL changed from instantaneous/heterogeneous nucleation and two-dimensional growth to sporadic/homogeneous nucleation and two-dimensional growth with decreasing crystallization temperature, while for PCL in the blends, the mechanism over the whole crystallization temperature range was that of instantaneous/heterogeneous nucleation and three-dimensional growth into spherulites. PCL in the blends also crystallized significantly faster than neat PCL, but there was little difference between the crystallization rates of PCL in the different blends. |
Sponsor | The Center for Advanced Materials at Qatar University funded this research and provided the required infrastructure. |
Language | en |
Publisher | Springer |
Subject | Crystallization behaviour Blends Kinetic analysis |
Type | Article |
Pagination | 4670-4681 |
Issue Number | 9 |
Volume Number | 51 |
ESSN | 1573-4803 |
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