Lafia-Araga, Ruth A. and Hassan, Aziz and Yahya, Rosiyah and Rahman, Normasmira Abd and Md Salleh, Fauzanie and Adebayo, Ganiyat Olusola (2021) Effects of wood flour content and heat treatment on the dynamic mechanical and impact properties of LDPE/red balau (Shorea Dipterocarpaceae) composites. Polymer Bulletin, 78 (9). pp. 5181-5203. ISSN 0170-0839, DOI https://doi.org/10.1007/s00289-020-03373-3.
Full text not available from this repository.Abstract
Red Balau saw dust was heat-treated at 180 degrees C and 200 degrees C for one hour and compounded with low-density polyethylene, LDPE, at 9, 20 and 37 wt%. The compounded materials were injection moulded into test specimens. Charpy impact assessment of the notched samples of the composites revealed that the peak load,P, and the critical stress intensity factor,K-c, increased with wood content and treatment temperature. While the energy to failure,W, and the critical strain energy release rate,G(c), decreased with wood content, the values were highest in composites made from wood flour treated at 180 degrees C and reduced in 200 degrees C treated wood composites. This behaviour revealed that heat treatment of wood flour at the 200 degrees C resulted in poorer impact properties of the composites. Dynamic mechanical analysis showed an increase in storage and loss modulus of composites made from untreated wood flour relative to the heat-treated ones. Tan delta values were also found to reduce in the heat-treated wood composites as a result of decreased damping. Heat treatment of wood flour at appropriate temperature enhanced both the mechanical and dynamic mechanical properties of the composites.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [PS347/2009C], Universiti Malaya [RG150/11AFR], Universiti Malaya [RF025B-2018], Tertiary Education Trust Fund, Federal Ministry of Education, Nigeria |
| Uncontrolled Keywords: | Heat treatment; Wood fibre modification; Impact properties; Dynamic mechanical analysis; Injection moulding |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 06 Apr 2022 07:58 |
| Last Modified: | 06 Apr 2022 08:21 |
| URI: | http://eprints.um.edu.my/id/eprint/28360 |
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