Effects of alkali treatment and elevated temperature on the mechanical properties of bamboo fibre-polyester composites
Article
Article Title | Effects of alkali treatment and elevated temperature on the mechanical properties of bamboo fibre-polyester composites |
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ERA Journal ID | 4883 |
Article Category | Article |
Authors | Manalo, Allan C. (Author), Wani, Evans (Author), Zulkarnain, Noor Azwa (Author), Karunasena, Warna (Author) and Lau, Kin-tak (Author) |
Journal Title | Composites Part B: Engineering |
Journal Citation | 80 (1), pp. 73-83 |
Number of Pages | 11 |
Year | 2015 |
Publisher | Elsevier |
Place of Publication | Kidlington, OX. United Kingdom |
ISSN | 1359-8368 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesb.2015.05.033 |
Web Address (URL) | http://www.sciencedirect.com/science/journal/13598368/80/supp/C |
Abstract | Bamboo fibre reinforced composites are not fully utilised due to the limited understanding on their mechanical characteristics. In this paper, the effects of alkali treatment and elevated temperature on the mechanical properties of bamboo fibre reinforced polyester composites were investigated. Laminates were fabricated using untreated and sodium hydroxide (NaOH) treated (4 to 8% by weight) randomly oriented bamboo fibres and tested at room and elevated temperature (40, 80 and 120oC). An improvement in the mechanical properties of the composites was achieved with treatment of the bamboo fibres. An NaOH concentration of 6% was found optimum and resulted in the best mechanical properties. The bending, tensile and compressive strength of this composite is 44.2, 21.0, 111.2 MPa, respectively while the stiffness is 4.0 GPa which are 7, 10, 81, and 25%, respectively higher than the untreated composites. When tested up to 80oC, the flexural and tensile strength are slightly enhanced but the bending stiffness and compressive strength decreased as these latter properties are governed by the behaviour of resin. At 40 and 80oC, the bond between the untreated fibres and polyester is comparable to that of untreated composites and resulted in almost same mechanical properties. However, a significant decrease in all mechanical properties was observed for composites tested at 120oC. |
Keywords | bamboo; polyester; bio-composites; alkali treatment; elevated temperature; mechanical properties |
ANZSRC Field of Research 2020 | 400505. Construction materials |
401602. Composite and hybrid materials | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
Hong Kong Polytechnic University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3205/effects-of-alkali-treatment-and-elevated-temperature-on-the-mechanical-properties-of-bamboo-fibre-polyester-composites
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