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Mechanical, dynamic mechanical, and interfacial properties of sisal fiber‐reinforced composite with epoxidized soybean oil‐based epoxy matrix
Author(s) -
Sahoo Sushanta K.,
Mohanty Smita,
Nayak Sanjay K.
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24168
Subject(s) - materials science , composite material , epoxy , composite number , dynamic mechanical analysis , sisal , fiber , adhesion , izod impact strength test , stiffness , polymer , ultimate tensile strength
In the present investigation, epoxidized soybean oil‐based toughened epoxy composites were developed using unidirectional sisal fibers mat aligned at [0°/0°] s and [0°/90°] s orientations. Stiffness and strength of the [0°/0°] S laminated composite are increased by 17% and 121%, respectively, as compared with the [0°/90°] s oriented composite. Simialrly, Notched impact strength and critical strain energy release rate ( K IC ) of [0°/0°] s laminated composite were also highly improved by 19.5% and 33.4%, respectively, with respect to [0/90] laminated composite. Dynamic mechanical analysis of [0°/0°] s oriented composite showed high storage modulus and broadened loss tangent curve revealing a strong influence of fiber orientation on damping behavior. The fibre–matrix adhesion in both the biocomposites is confirmed by scanning electron microgrphs of the impact fractured specimens. Contact angle and work of adhesion are measured to investigate the hydrophilic nature of epoxy, its blend, and composite toward water. POLYM. COMPOS., 39:2065–2072, 2018. © 2016 Society of Plastics Engineers