Journal International journal of Engineering And Applied Science
Publisher Faculty of Engineering, Nnamdi Azikiwe University, Awka Nigeria.
Issue 1
ISSN 1119-8109
Pages 99-109
Subject Chemical Engineering
Date of Publication November 4, 2018

AUTHOR(S) Government Rabboni Mike, Onukwuli Okechukwu Dominic and Odera Raphael Stone


This research was aimed at optimizing the properties of avocado wood flour/high density polyethylene composite (AW/HDPE). The effect of particle size (P1) and filler weight (P2) on the tensile strength (ZTS), flexural strength (ZFS), impact strength (ZIM) and water absorption (ZW) properties of the composite was examined. The avocado wood flour (AW) was compounded into fine particles (100-20 mesh) at 5-25 % wt with high density polyethylene (HDPE) by injection molding. The optimization process was done using a quadratic function of central composite design to forecast the optimum size and filler weight on the properties of the composite. The optimum input variables were 80 mesh and 21.62 % for P1 and P2. The optimum output variables were 25.652 MPa, 55.168 MPa, 47.397 KJ/m2 and 2.782 % for ZTS,ZFS, ZIM and ZW, respectively. The error between the experiment and response surface methodology (RSM) model at optimum is less than 1%, which indicated a good prediction of the model. This shows that RSM model is appropriate for the optimization of avocado wood flour polymer composite. Natural filler should be considered as a suitable substitute to conventional non-metal compound use as filler in the production of avocado wood flour polymer composite for furniture application.

Keywords: optimization, natural filler, avocado wood flour/high density polyethylene, properties, central composite design

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