Alfa fibres for unsaturated polyester composites reinforcement: Effects of chemical treatments on mechanical and permeation properties

Bessadok, Atef; Roudesli, Sadok; Marais, Stéphane; Follain, Nadège; Lebrun, Laurent

doi:10.1016/j.compositesa.2008.10.018

Cited by 119 publications

(70 citation statements)

References 24 publications

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“…Consequently, the percolation phenomenon was reduced increasing the diffusion pathway of water molecules through the composite and so reduced the permeability (stationary permeation flow). Similar results had been obtained with UPR/alfa fibre-based composites [24]. The increase of moisture resistance of (S) treated fibres (reduction of water sorption) and the improvement of the fibre/matrix interface participated to the reduction of the permeability.…”

Section: As Shown Insupporting

confidence: 74%

Study of water behaviour of chemically treated flax fibres-based composites: A way to approach the hydric interface

Alix

Lebrun

Morvan

et al. 2011

Composites Science and Technology

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Please cite this article as: Alix, S., Lebrun, L., Morvan, C., Marais, S., Study of water behaviour of chemically treated flax fibres based composites: a way to approach the hydric interface, Composites Science and Technology (2011), doi: 10.1016/j.compscitech.2011 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractSilane (Si) and styrene (S) treatments were applied on flax fibres in order to improve their adhesion with a polyester resin and to increase their moisture resistance. The water sorption and permeation kinetics of the composites were correlated with the water sorption behaviour of untreated and treated fibres. An increase of the water barrier effect was observed in treated fibres-based composites in comparison with untreated ones. This was related to the shift-down of water solubility and to a decrease of the water diffusivity in treated fibre-based composites. In the case of (S) treatment, the presence of styrene increased the moisture resistance of the treated fibres and made compatible the fibres and the matrix. In the case of (Si) treatment, a good hydric fibre/matrix interface was obtained due to crosslinking reactions and hydrogen bonding between water molecules and free hydroxyl groups of (Si) treated fibres. In order to interpret water permeation behaviour of composite films, a simple illustrated model is suggested and represented by a schematic view.

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Section: As Shown Insupporting

confidence: 74%

Study of water behaviour of chemically treated flax fibres-based composites: A way to approach the hydric interface

Alix

Lebrun

Morvan

et al. 2011

Composites Science and Technology

Self Cite

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“…In order to optimize this fiber/matrix interface and to promote adhesion, various chemical treatments can be applied on the surface of the fibers, such as alkaline treatment, bleaching, acetylation, and steaming (Venkateshwaran et al 2013;Rosa et al 2009;Bessadok et al 2009). Among these treatments, the most commonly applied ones are the chemical treatments and have, as the main objective, the removal of amorphous materials such as lignin, waxes, and extractives.…”

Section: Introductionmentioning

confidence: 99%

Characterization of High Density Polyethylene (HDPE) Reinforced with Banana Peel Fibers

Pereira¹,

Benini²,

Watashi³

et al. 2013

BioResources

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Lignocellulosic fibers from banana peels were washed with water in order to increase their compatibility with a polymeric matrix, and their properties were compared with unwashed fibers. Washed banana fibers were mixed with high density polyethylene (HDPE) and placed in an injector chamber to produce specimens for tensile tests. Samples of washed banana fibers/HDPE composites were characterized by tensile tests and thermal analysis. The chemical composition of unwashed and washed banana fibers was analyzed by thermogravimetric analysis, scanning electron microscopy, and X-ray diffraction. The treatment with water was effective at removing extractives and increasing the surface roughness, thereby increasing the thermal stability of the fibers. However, results showed that the addition of washed banana fibers decreased the thermal stability of composites, while increasing the melting and crystallization temperatures of composites. The addition of 5 wt% fibers also provided an improvement in mechanical properties of composites in comparison with pure HDPE.

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“…Higher mechanical degradation in tensile strength by 56% for 2 nd samples immersed in distilled water is noticed. This may be due variability in composition (Bessadok et al, 2009). There can be chances that specimen subjected to water immersion had higher voids than overall composite laminate, as voids in the composites need not be uniformly distributed.…”

Section: Tensile Testmentioning

confidence: 99%

Effect of sawdust impregnation on long coir fibers reinforced with epoxy matrix

Nair

2018

Int. j. adv. appl. sci.

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The purpose of this study is to improve mechanical property of long coir fibers of length 100-150mm using well graded sawdust filler and to scrutinize viability when subjected to distill and sea water conditions for calculated duration. Study involves fabricating eco-friendly composite specimens by maintaining optimum percentage of natural fibers and fillers without compromising on mechanical strength. The composites of different proportions by percentage of matrix (85%, 80%, 75%, 70%), reinforcement (15%, 15%, 15%, 15%), and filler (0%, 5%, 10%, 15%) by mass is developed by hand layup method and compared for their mechanical properties in dry, distilled and sea water conditions. Mechanical properties of coir composite materials improved in addition to sawdust fillers up to certain percentage. In dry condition tensile, flexural and hardness was observed. A maximum tensile and flexural modulus of 7.61Gpa and 2.16Gpa respectively was observed. Higher water absorption was noticed in specimen with higher filler percentage than the specimen with no filler. This is due to hydrophilic nature of sawdust and coir. Specimens immersed in distilled and sea water observed a slump by certain percentage in their strength with increase in fillers. Efficient utilization of filler has improved mechanical performance up to certain percentage when compared to specimen with no filler. As the filler percentage increased above 5% due to the higher fiber length and cluster behavior of coir, resistant in resin penetration was observed as a result specimen turned out to be more and more redundant.

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Alfa fibres for unsaturated polyester composites reinforcement: Effects of chemical treatments on mechanical and permeation properties

Cited by 119 publications

References 24 publications

Study of water behaviour of chemically treated flax fibres-based composites: A way to approach the hydric interface

Study of water behaviour of chemically treated flax fibres-based composites: A way to approach the hydric interface

Characterization of High Density Polyethylene (HDPE) Reinforced with Banana Peel Fibers

Effect of sawdust impregnation on long coir fibers reinforced with epoxy matrix

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