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Structure and properties of polylactide/natural rubber blends

AuthorsBitinis, Natacha CSIC; Verdejo, Raquel CSIC ORCID ; Cassagnau, P.; López-Manchado, Miguel A. CSIC ORCID
immiscible blends
Issue Date2011
CitationMaterials Chemistry and Physics 129: 823-831 (2011)
AbstractPolylactide, PLA, is a biodegradable thermoplastic polyester derived from biomass that has restricted packaging applications due to its high brittleness and poor crystallisation behaviour. Here, new formulations based on natural rubber-PLA blends have been developed. The processing windows, temperature, time, and rotor rate, and the rubber content have been optimised in order to obtain a blend with useful properties. The rubber phase was uniformly dispersed in the continuous PLA matrix with a droplet size range from 1.1 to 2.0 μm. The ductility of PLA has been significantly improved by blending with natural rubber, NR. The elongation at break improved from 5% for neat PLA to 200% by adding 10 wt% NR. In addition, the incorporation of NR not only increased the crystallisation rate but also enhanced the crystallisation ability of PLA. These materials are, therefore, very promising for industrial applications. © 2011 Elsevier B.V. All rights reserved.
Publisher version (URL)
Identifiersdoi: 10.1016/j.matchemphys.2011.05.016
issn: 0254-0584
Appears in Collections:(ICTP) Artículos

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