The present work was undertaken to examine the evolution of interfacial properties of Kevlar/epoxy laminated composites hybridized by naturally woven Coco Nucifera sheath (CNS). Hand lay-up method followed by hot pressing was performed to fabricate our laminated composites. Broadband Dielectric Spectroscopy (BDS) was adopted to investigate the effect of varying CNS fractions (0%, 25%, 50%, 75% and 100%) on the molecular dynamics and the interfacial adhesion between Kevlar/epoxy and CNS/epoxy. The surface and cross-section morphology of the samples were studied in order to analyze the weaving structures of Kevlar and CNS and the interfaces between epoxy matrix and reinforcements. Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared Spectroscopy (FTIR) were carried out to control the characteristic temperatures and the interactions between the two kinds of fibers (Kevlar and CNS) and the epoxy resin. The BDS results revealed different relaxations: the conduction phenomenon, the primary -process and the interfacial polarization, called also MWS polarization, whose dielectric strength was calculated using the WinFit software. Hence, Kevlar fibers can be successfully replaced by 25% of CNS natural fibers for advanced structural applications where interfacial adhesion is prime requirement.
NetoJQueirozHAguiarR, et al.A review of recent advances in hybrid natural fiber reinforced polymer composites. J Renew Mater2022; 10: 561–589.
2.
JesuarockiamNJawaidMZainudinES, et al.Enhanced thermal and dynamic mechanical properties of synthetic/natural hybrid composites with graphene nanoplateletes. Polymers2019; 11: 1085.
3.
GhorbaniJDaghighVRahmatiS, et al.Creep behavior of latania natural fiber-reinforced epoxy composites at elevated temperatures. Polym Compos2021; 42: 3089–3097.
4.
KumarSPrasadLPatelVK, et al.Physical and mechanical properties of natural leaf fiber-reinforced epoxy polyester composites. Polymers2021; 13: 1369.
5.
AtmakuriAPaleviciusAKolliL, et al.Development and analysis of mechanical properties of caryota and sisal natural fibers reinforced epoxy hybrid composites. Polymers2021; 13: 864.
6.
JawaidMCheeSSAsimM, et al.Sustainable kenaf/bamboo fibers/clay hybrid nanocomposites: properties, environmental aspects and applications. J Clean Prod2022; 330: 129938.
7.
AsimMParidahMTChandrasekarM, et al.Thermal stability of natural fibers and their polymer composites. Iran Polym J2020; 29: 625–648.
8.
NaveenJJawaidMZainudinES, et al.Evaluation of ballistic performance of hybrid Kevlar®/Cocos nucifera sheath reinforced epoxy composites. J Text Inst2019; 110: 1179–1189.
9.
RangarajRSathishSMansadeviTLD, et al.Investigation of weight fraction and alkaline treatment on catechu linnaeus/Hibiscus cannabinus/sansevieria ehrenbergii plant fibers-reinforced epoxy hybrid composites. Adv Mater Sci Eng2022; 2022: 1–9.
10.
FakraouiOGhorbelNNoirelC, et al.Comparative analysis of cellulose nanocrystals and cellulose nanofibrils on the physico-chemical properties of polyvinyl alcohol/chitosan blend for sustainable food packaging. J Appl Polym Sci2023; 2023: e54024.
11.
VinodATengsuthiwatJGowdaY, et al.Jute/Hemp bio-epoxy hybrid bio-composites: influence of stacking sequence on adhesion of fiber-matrix. Int J Adhes Adhes2022; 113: 103050.
12.
KoyuncuM. Evaluation of mechanical and water absorption behaviours of corn shell/pumice reinforced epoxy composites. Avrupa Bilim Ve Teknol Derg2021; 32: 573–576.
13.
ZhangCChenMCoasneB, et al.Hygromechanics of softwood cellulosic nanocomposite with intermolecular interactions at fiber-matrix interface investigated with molecular dynamics. Compos Part B Eng2022; 228: 109449.
14.
MohanavelVSuresh KumarSVairamuthuJ, et al.Influence of stacking sequence and fiber content on the mechanical properties of natural and synthetic fibers reinforced penta-layered hybrid composites. J Nat Fibers2021; 19: 5258–5270.
SinghCPPatelRVHasanMF, et al.Fabrication and evaluation of physical and mechanical properties of jute and coconut coir reinforced polymer matrix composite. Mater Today Proc2021; 38: 2572–2577.
18.
ZhangKWangFLiangW, et al.Thermal and mechanical properties of bamboo fiber reinforced epoxy composites. Polymers2018; 10: 608.
19.
SabaNParidahMTJawaidM. Mechanical properties of kenaf fibre reinforced polymer composite: a review. Constr Build Mater2015; 76: 87–96.
20.
SinghTPruncuCIGangilB, et al.Comparative performance assessment of pineapple and Kevlar fibers based friction composites. J Mater Res Technol2020; 9: 1491–1499.
21.
PrasadLSinghVPatelRV, et al.Physical and mechanical properties of rambans (Agave) fiber reinforced with polyester composite materials. J Nat Fibers2021; 19: 6104–6118.
22.
Obi ReddyKSivamohan ReddyGUma MaheswariC, et al.Structural characterization of coconut tree leaf sheath fiber reinforcement. J For Res2010; 21: 53–58.
23.
Yashas GowdaTGKushvahaVMrS, et al.A new study on flax-basalt-carbon fiber reinforced epoxy/bioepoxy hybrid composites. Polym Compos2021; 42: 1891–1900.
24.
Al-SabaghAMAbdouMIMigahedMA, et al.Influence of Egyptian nanoilmenite/amorphous silica composite particles on the electrochemical and mechanical properties of cold galvanizing formulation coatings. Adv Powder Technol2018; 29: 367–379.
25.
DingRSunYLeeJ, et al.Enhancing interfacial properties of carbon fiber reinforced epoxy composites by grafting MXene sheets (Ti2C). Compos Part B Eng2021; 207: 108580.
26.
LadharAArousMBoufiS, et al.Molecular dynamics of poly(styrene-co-2-ethyl hexylacrylate) copolymer/cellulose nanocrystals nanocomposites investigated by dielectric relaxation spectroscopy: effect of the silane content. J Mol Liq2016; 224: 515–525.
27.
LadharABen MabroukAArousM, et al.Dielectric properties of nanocomposites based on cellulose nanocrystals (CNCs) and poly(styrene-co-2-ethyl hexylacrylate) copolymer. Polymer2017; 125: 76–89.
28.
MaxwellJC. A treatise on electricity and magnetism. Oxford: Clarendon, 1873.
29.
WagnerKW. Erklärung der dielektrischen nachwirkungsvorgänge auf grund maxwellscher vorstellungen. Archiv F Elektrotechnik1914; 2: 371–387.
30.
SillarsRW. The properties of a dielectric containing semiconducting particles of various shapes. Inst Electr Eng-Proc Wirel Sect Inst1937; 80: 378–394.
31.
OmriMASanjayMRTrikiA, et al.Dielectric properties and interfacial adhesion of jute, kenaf and E-glass fabrics reinforcing epoxy composites. Polym Compos2019; 40: 2142–2153.
32.
NaveenJJawaidMZainudinES, et al.Mechanical and moisture diffusion behaviour of hybrid Kevlar/Cocos nucifera sheath reinforced epoxy composites. J Mater Res Technol2019; 8: 1308–1318.
33.
ZhouWGongYTuL, et al.Dielectric properties and thermal conductivity of core-shell structured Ni@ NiO/poly (vinylidene fluoride) composites. J Alloys Compd2017; 693: 1–8.
34.
NaveenJJawaidMZainudinES, et al.Improved mechanical and moisture-resistant properties of woven hybrid epoxy composites by graphene nanoplatelets (GNP). Materials2019; 12: 1249.
35.
NaveenJJawaidMZainudinES, et al.Thermal degradation and viscoelastic properties of Kevlar/Cocos nucifera sheath reinforced epoxy hybrid composites. Compos Struct2019; 219: 194–202.
36.
SharmaSKumarPDeshmukhR. Neuroprotective potential of spermidine against rotenone induced Parkinson's disease in rats. Carbon2018; 116: 104–111.
37.
UddinMSIslamMSChaityFS, et al.Evaluation of laminated composites reinforced by high-performance Kevlar filaments with variable SiO2: mechanical, morphological and thermal tests. Compos Mater2020; 4: 15.
38.
BrightBMJoseph SelviBAbu HassanS, et al.Characterization of chemically treated new natural cellulosic fibers from peduncle of Cocos nucifera L. Var typica. Polym Compos2021; 42: 6403–6416.
39.
GhorbelNKallelABoufiS. Molecular dynamics of poly (vinyl alcohol)/cellulose nanofibrils nanocomposites highlighted by dielectric relaxation spectroscopy. Compos Part Appl Sci Manuf2019; 124: 105465.
40.
AgrebiFGhorbelNLadharA, et al.Enhanced dielectric properties induced by loading cellulosic nanowhiskers in natural rubber: modeling and analysis of electrode polarization. Mater Chem Phys2017; 200: 155–163.
41.
KremerFSchönhalsA. The scaling of the dynamics of glasses and supercooled liquids. In: Broadband dielectric spectroscopy. Berlin, Heidelberg, Springer, 2003, pp. 99–129.
42.
TaktakSHammamiHKallelA, et al.Dielectric and interfacial properties investigation of poly (acrylonitrile-co-2, 2, 2-trifluoroethyl methacrylate) copolymer/organomodified beidellite clay nanocomposites. Polym Compos2020; 41: 4907–4919.
43.
HammamiHJawaidMKallelA. Effects of oil palm and montmorillonite nanofillers on stiffness and interfacial adhesion of kenaf/epoxy hybrid nanocomposites. Polym Compos2021; 42: 2948–2957.
44.
GhorbelNRaihaneMLahciniM, et al.Interfacial characteristics of poly (ε-caprolactone)-grafted-halloysites nanotubes bionanocomposites. Polym Eng Sci2021; 61: 397–409.
45.
HaddarNGhorbelNOmriMA, et al.Dielectric, vibrational and thermal properties of sisal fibers-reinforced poly (lactic acid). Polym Compos2021; 42: 1267–1278.
46.
NaveenJJawaidMZainudinES, et al.Evaluation of ballistic performance of hybrid Kevlar®/Cocos nucifera sheath reinforced epoxy composites. J Text Inst2019; 110: 1179–1289.
47.
AgrebiFGhorbelNRashidB, et al.Influence of treatments on the dielectric properties of sugar palm fiber reinforced phenolic composites. J Mol Liq2018; 263: 342–348.
