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Actual Properties of Epoxy Reinforced with Surface Modified Sisal Fiber

Dhananjay Yadav, G. R. Selokar


In recent years, natural fibers incorporation in polymeric resin has received huge attention among the research community. The reasons of demand are multiple that includes its light weight, environmental friendly nature; non-toxic, low cost, easy availability, low processing cost and most importantly they possess characteristics which are comparable to conventional material. With this approach, present work comprises of fabrication of new category of natural fiber reinforced composites with polymer as base matrix. Sisal fiber is selected as reinforcing phase with epoxy matrix. Four different combination of composites are prepared with sisal fiber loading varies from 2.5 wt.% to 10 wt.% using well-known hand lay-up method. Sisal fibers were treated with NaOH at varied concentration to observe the effect of surface modification and its concentration on the developed material. Three different concentration of NaOH is used i.e. 2 mole, 4 mole and 6 moles for preparing three sets of composites. One set is prepared with raw sisal fiber to make total of four sets of composites. Physical and mechanical properties under investigation are density, void content, water absorption rate tensile behaviour, compressive behaviour and flexural behaviour. The experimental results obtained are compared for optimizing the concentration of NaOH. Further, the set of composites showing best result were studied for two-body abrasive wear. A well-known design of experiment method i.e. Taguchi method is used to design the experiments and to determine best parametric combination for minimum abrasive wear of the fabricated composites. The effect of fiber content, normal loading, sliding velocity and sliding distance on specific wear behavior of the fabricated composites is presented. This is followed by confirmation test which shows the good correlation between the predicted and experimental values.


Polymer matrix composites, epoxy, sisal fiber, surface treatment, physical properties, mechanical properties, two-body abrasive wear

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