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HomeKey Engineering MaterialsKey Engineering Materials Vol. 908Effect of Graphene on Mechanical and Morphological...

Effect of Graphene on Mechanical and Morphological Properties of Coconut Shell Reinforced Unsaturated Polyester Composite

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Abstract:

Coconut shell (CS) reinforced unsaturated polyester (UPE) composites have been prepared by using hand lay-up and compression molding techniques. To improve fiber matrix adhesion, the CS (30 wt%) was chemically treated by two chemical treatments which are alkaline (NaOH) and alkaline-silane with concentration NaOH (6%) and silane (2%). To enhance the performance of CS-UPE composites, graphene nanoplatelets (GNP) was also added as a nano filler. Scanning electron microscopy (SEM) was used to investigate the morphology of the composite samples. Mechanical properties such as tensile and flexural tests of untreated and chemical treated CS-UPE composites was also studied and compared. Overall, the use of alkalized treated CS-UPE composites showed the best mechanical (strength and modulus). Therefore, alkaline treated CS was selected to be re-prepared with graphene as nano filler in UPE composites at 0.5, 1.0 and 1.5 wt% filler loading, respectively. The presence of GNP in CS-UPE composites have demonstrated a significant enhancement in modulus properties but at the expense of tensile strength. The use of 1.0 wt% of GNP seems more optimize loading since the increment of GNP has reduced the tensile strength, which might be due to the agglomeration issue.

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Periodical:

Key Engineering Materials (Volume 908)

Pages:

33-38

DOI:

https://doi.org/10.4028/p-51to4o

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Online since:

January 2022

Authors:

Atikah Abdullah, Nurul Ainnabilah Mohd Rosdi*, Mohamad Bashree Abu Bakar, Siti Hajar Mohd, Nor Hakimin Abdullah, Mazlan Mohamed

Keywords:

Chemical Treatment, Coconut Shell, Graphene, Mechanical Properties, Unsaturated Polyester

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* - Corresponding Author

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