Improved thermo-mechanical properties by the addition of natural fibres in starch-based sustainable biocomposites
2011 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 42, no 1, p. 30-40Article in journal (Refereed) Published
Abstract [en]
Sustainable biocomposites based on thermoplastic starch copolymers (Mater-Bi KE03B1) and biofibres (cotton, hemp and kenaf) were prepared and characterised in terms of their thermo-mechanical and morphological properties. Biocomposites exhibit improved thermal stability and mechanical properties in comparison with the Mater-Bi KE. Biofibres act as suitable thermal stabilizers for the Mater-Bi KE, by increasing the maximum decomposition temperature and the Ea associated to the thermal decomposition process. Biofibre addition into the Mater-Bi KE results in higher storage modulus and in a reduction of the free-volume-parameter associated to the Mater-Bi KE glass transition. The influence of different biofibres on the thermo-mechanical properties of the biocomposites has been discussed. Hemp and kenaf enhance the thermal stability and reduce the free volume-parameter of Mater-Bi KE more significantly than cotton fibres, although the latter exhibits the highest mechanical performance. These differences may be explained by the improved interaction of lignocellulosic fibres with the Mater-Bi KE, due to the presence of hemicellulose and lignin in their formulation. © 2010 Elsevier Ltd. All rights reserved.
Place, publisher, year, edition, pages
2011. Vol. 42, no 1, p. 30-40
Keywords [en]
Polymer-matrix composites (PMCs), Thermomechanical, Electron microscopy, Thermal analysis, Bio-composites, Biofibres, Cotton fibres, Decomposition temperature, Mater-Bi, Mechanical performance, Morphological properties, Natural fibre, Starch-based, Storage moduli, Sustainable bio-composites, Thermal analysis, Thermal decomposition process, Thermal stability, Thermal stabilizers, Thermo-mechanical, Thermomechanical properties, Thermoplastic starch, Cotton, Cotton fibers, Glass transition, Hemp, Polymer matrix composites, Polypropylenes, Pyrolysis, Starch, Thermoanalysis, Thermodynamic stability, Mechanical properties, Composites, Electron Microscopy, Glass Transition Temperature, Polypropylene
National Category
Polymer Chemistry Materials Chemistry
Identifiers
URN: urn:nbn:se:his:diva-15888DOI: 10.1016/j.compositesa.2010.10.001ISI: 000285902300005Scopus ID: 2-s2.0-78650223590OAI: oai:DiVA.org:his-15888DiVA, id: diva2:1229296
2018-06-292018-06-292021-11-30Bibliographically approved