Effect of Chemical Modifications of Fibers on Tensile Properties of Epoxy Hybrid Composites

Jawaid, Mohammad; Othman, Alothman; Saba, N.; Shekeil, Y. A.; Paridah, M. T.; Khalil, H. P. S. Abdul

doi:10.1080/1023666x.2014.904081

Cited by 25 publications

(8 citation statements)

References 35 publications

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“…Treated fibers‐based hybrid composites show better storage modulus due to more surface area and cross links within matrix‐fiber network leading to high storage modulus values . The high stiffness of treated hybrid composites (EFB/jute/EFB and jute/EFB/jute) is in agreement with their tensile property reported in our previous research . Above T g , the E ′ value of treated hybrid composites was higher than untreated hybrid composites.…”

Section: Resultssupporting

confidence: 88%

Effect of fibers treatment on dynamic mechanical and thermal properties of epoxy hybrid composites

et al. 2014

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Epoxy hybrid composites fabricated by reinforcing 2‐hydroxy ethyl acrylate (2‐HEA) treated oil palm empty fruit bunch (EFB) and jute fibers. It assume that chemical modification of jute and oil palm EFB fibers increased fiber/matrix interfacial bonding and it results in enhanced thermal properties of hybrid composites. Dynamic mechanical and thermal analysis of treated hybrid composites was carried out. Results indicated that chemical modification of oil palm EFB and jute fibers affect the dynamic mechanical and thermal properties of hybrid composites. The storage modulus values of hybrid composites increases with chemical treatment and loss modulus increased with fiber treatment in hybrid composites. Damping factor peak values of treated hybrid composites shifted toward the lower temperature compared to both untreated hybrid composites. Cole–Cole analysis was made to understand the phase behaviour of the hybrid composites. Thermogravimetric analysis indicated an increased in thermal stability of hybrid composite with the incorporation of chemically modified fibers. POLYM. COMPOS., 36:1669–1674, 2015. © 2014 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 88%

Effect of fibers treatment on dynamic mechanical and thermal properties of epoxy hybrid composites

et al. 2014

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“…Due to fiber pull out, many holes were resulted in the matrix when untreated fibers were used in the composites. The main reason for fiber pull out may be due to low interfacial adhesion between fiber and matrix . In the case of chemically treated VGFs reinforced composites, Figs.…”

Section: Resultsmentioning

confidence: 99%

Properties of Untreated and Chemically Treated Cissus Quadrangularis Natural Fibers and Their Composites With Polyester as the Matrix

Mayandi

Rajini

Pandian³

et al. 2016

Polymer Composites

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The main aim of this work was to study the effects of chemical treatments on veldt grape fibers (VGFs) and their composites with unsaturated polyester (UP) as the matrix. Alkalis such as sodium hydroxide (NaOH) and calcium hydroxide [Ca(OH) 2 ] and silane coupling agent (NaOH 1 silane) were used to modify the surface of optimally selected 40mm long fibers. The chemical treatments were carried with different concentrations of 5%, 10%, and 15% of chemical agents for 1 h. The chemically treated single fibers were subjected to tensile testing. The chemical analysis, crystallinity and functional group identification of both untreated and surface modified VGFs were carried out. The untreated and chemically treated 40 mm fiber length VGFs/UP composites were prepared with a loading of 40 wt% for studying the mechanical properties. The enhanced tensile strength of VGFs was found at the optimized concentration of 10% (NaOH), 15% [Ca(OH) 2 ] and 10% (NaOH 1 silane) for various chemical treatments. The thermal stability of treated VGFs was higher when compared to untreated ones. Among all, the Ca(OH) 2 treated VGF/UP composites possessed better mechanical properties. Scanning Electron Microscopic (SEM) analysis was performed to identify the failure mechanism for the impact fractured samples.

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“…Cellulose is considered an almost inexhaustible source of raw material in the increasing demand for environmentally friendly and biocompatible products [1,2]. The excellent mechanical properties, remarkable reinforcing capability, low density, thermal stability, and environmental benefits of cellulose have attracted scientists' interest in utilizing cellulosic fibers to develop environmentally friendly composite materials.…”

Section: Introductionmentioning

confidence: 99%

Exploration of a Chemo-Mechanical Technique for the Isolation of Nanofibrillated Cellulosic Fiber from Oil Palm Empty Fruit Bunch as a Reinforcing Agent in Composites Materials

et al. 2014

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Abstract:The aim of the present study was to determine the influence of sulphuric acid hydrolysis and high-pressure homogenization as an effective chemo-mechanical process for the isolation of quality nanofibrillated cellulose (NFC). The cellulosic fiber was isolated from oil palm empty fruit bunch (OPEFB) using acid hydrolysis methods and, subsequently, homogenized using a high-pressure homogenizer to produce NFC. The structural analysis and the crystallinity of the raw fiber and extracted cellulose were carried out by Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The morphology and thermal stability were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermogravimetric (TGA) analyses, respectively. The FTIR results showed that lignin and hemicellulose were removed effectively from the extracted cellulose nanofibrils. XRD analysis revealed that the percentage of crystallinity was OPEN ACCESSPolymers 2014, 6 2612 increased from raw EFB to microfibrillated cellulose (MFC), but the decrease for NFC might due to a break down the hydrogen bond. The size of the NFC was determined within the 5 to 10 nm. The TGA analysis showed that the isolated NFC had high thermal stability. The finding of present study reveals that combination of sulphuric acid hydrolysis and high-pressure homogenization could be an effective chemo-mechanical process to isolate cellulose nanofibers from cellulosic plant fiber for reinforced composite materials.

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Effect of Chemical Modifications of Fibers on Tensile Properties of Epoxy Hybrid Composites

Cited by 25 publications

References 35 publications

Effect of fibers treatment on dynamic mechanical and thermal properties of epoxy hybrid composites

Effect of fibers treatment on dynamic mechanical and thermal properties of epoxy hybrid composites

Properties of Untreated and Chemically Treated Cissus Quadrangularis Natural Fibers and Their Composites With Polyester as the Matrix

Exploration of a Chemo-Mechanical Technique for the Isolation of Nanofibrillated Cellulosic Fiber from Oil Palm Empty Fruit Bunch as a Reinforcing Agent in Composites Materials

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