Improved Interlaminar Shear Behaviour of a New Hybrid Kevlar/Cocos Nucifera Sheath Composites with Graphene Nanoplatelets Modified Epoxy Matrix

J. Naveen, M. Jawaid, E. S. Zainudin, Mohamed T.H. Sultan, R. Yahaya

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

This research investigated the effect of hybridizing Kevlar/cocos nucifera sheath and the effect of adding different wt.% of Graphene nanoplatelets (GNP) on the interlaminar shear behaviour of laminated composites. Initially, different wt.% (0, 0.25, 0.50, and 0.75) of GNP’s were mixed with epoxy resin through Ultrasonic-sonication. Then the laminated composites were fabricated by hand lay-up method followed by hot pressing. The weight ratio of Kevlar (K) and cocous nucifera sheath (CS) are 100/0 (S1), 75/25(S2), 50/50 (S3), 25/75(S4), and 0/100(S5). Interlaminar shear strengths (ILSS) of different laminates were evaluated using a short beam shear test. The results revealed that hybrid composites S2 (75/25) possess higher ILSS than other laminates in the absence of GNP. Addition of GNP at 0.25 wt.% exhibited higher ILSS in all the laminates (S1 to S5) due to the improved interfacial properties. Further addition of GNP (0.50, and 0.75 wt.%) has declined the ILSS of the laminated composites due to aggregation and overlapping of GNP. XRD analysis reveals that at 0.25 wt.% of GNP, all the hybrid composites exhibited higher crystallinity index. Statistical analysis of the results has been performed using one way-ANOVA (Analysis of variance) and it shows that there is a statistically significant difference between the obtained interlaminar shear strength of the laminated composites.

Original languageEnglish
Pages (from-to)1749-1753
Number of pages5
JournalFibers and Polymers
Volume20
Issue number8
DOIs
Publication statusPublished - Aug 1 2019
Externally publishedYes

Keywords

  • Cocos nucifera sheath
  • Graphene nanoplatelet
  • Hybrid composite
  • Interlaminar shear strength
  • Kevlar

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Polymers and Plastics

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