Development of sustainable biodegradable lignocellulosic hemp fiber/ polycaprolactone biocomposites for light weight applications

Journal article

Barber, AH, Dhakal, HN, Ismail, S, Zhang, Z, Welsh, E, Maigret, J-E and Beaugrand, J (2018). Development of sustainable biodegradable lignocellulosic hemp fiber/ polycaprolactone biocomposites for light weight applications. Composites Part A: Applied Science and Manufacturing. 113, pp. 350-358. https://doi.org/10.1016/j.compositesa.2018.08.005
AuthorsBarber, AH, Dhakal, HN, Ismail, S, Zhang, Z, Welsh, E, Maigret, J-E and Beaugrand, J
Abstract

Biocomposites with poly(ε-caprolactone) (PCL) as matrix and lignocellulosic hemp fiber with varying average aspect ratios (19, 26, 30 and 38) as reinforcement were prepared using twin extrusion process. The influence of fiber aspect ratio on the water absorption behavior and mechanical properties are investigated. The percentage of moisture uptake increased with the aspect ratio, following Fickian behavior. The hemp fiber/PCL bio- composites showed enhanced properties (tensile, flexural and low-velocity impact). The biocomposite with 26 aspect ratio showed the optimal properties, with flexural strength and modulus of 169% and 285% respectively, higher than those of neat PCL. However, a clear reduction on the mechanical properties was observed for water- immersed samples, with reduction in tensile and flexural moduli for the aspect ratio of 26 by 90% and 62%, respectively than those of dry samples. Summarily, the optimal sample provides an eco-friendly alternative to conventional, petroleum-based and non-renewable composites for various applications.

KeywordsComposites; Mechanics; Biomaterials; Sustainability; 0912 Materials Engineering; 0913 Mechanical Engineering; 0901 Aerospace Engineering; Materials
Year2018
JournalComposites Part A: Applied Science and Manufacturing
Journal citation113, pp. 350-358
PublisherElsevier
ISSN1359-835X
Digital Object Identifier (DOI)https://doi.org/10.1016/j.compositesa.2018.08.005
Publication dates
Print07 Aug 2018
Publication process dates
Deposited17 Aug 2018
Accepted06 Aug 2018
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