Effect of Common Chemical Treatments on the Process Kinetics and Mechanical Properties of Flax/Epoxy Composites Manufactured by Resin Infusion

Phillips, Steven; Kuo, Ping‐Chang; Demaria, Cristian; Lessard, Larry; Sain, Mohini; Hubert, Pascal

doi:10.1007/s10924-015-0709-8

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Studies have shown that alkali treatment can roughen flax fiber surfaces, but the current study did not show this effect, which was possibly due to the low concentration of NaOH utilized in the treatment process. This phenomenon was confirmed by [31]. Finally, plasma treatment resulted in removing waxy substances and rougher surfaces.…”

Section: Images Of Flax Fibers Before and After Wet And Dry Treatmentsmentioning

confidence: 52%

Effects of Wet and Dry Treatments on Surface Functional Groups and Mechanical Properties of Flax Fiber Composites

et al. 2023

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Flax fibers have found widespread use in eco-composite materials because of their remarkable mechanical properties compared to glass fibers. However, their low stability limits their use on a larger scale when employed in hot or humid environments. Therefore, the surfaces should be modified before the composite process to provide the best interfacial interactions and increase the dispersion of natural fibers. To tackle this problem, two kinds of modifications can be considered: wet and dry modifications. This research explores different methods to improve the adhesion between flax fibers and the poly lactic acid (PLA) polymer. Morphological and chemical modifications in the presence of acetone, alkali (as a wet modification), and with air atmospheric pressure plasma (as a dry modification) are compared in this research. The results revealed that altering the chemical characteristics on the surface significantly changed the mechanical properties of the final composite. More specifically, the Fourier transform infrared spectroscopy (FTIR) data indicate that wax-related peaks (2850 and 2920 cm−1) were eliminated by both wet and dry treatments. Dynamic mechanical analysis (DMA) results also highlighted that a better bond between the flax fibers and the PLA matrix is obtained with the plasma modification.

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Section: Images Of Flax Fibers Before and After Wet And Dry Treatmentsmentioning

confidence: 52%

Effects of Wet and Dry Treatments on Surface Functional Groups and Mechanical Properties of Flax Fiber Composites

et al. 2023

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“…Silane treatments were carried out as follows: first a solution of 1 wt.% silane in acetone was prepared and stirred until homogenization. The use of different solvents was broadly studied [ 38 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ], however acetone is widely used to promote hydrolysis [ 31 ]. Pickering et al reported that acetone improves the surface roughness of fibers, increasing their specific area [ 48 ].…”

Section: Methodsmentioning

confidence: 99%

Maleinized Linseed Oil as Epoxy Resin Hardener for Composites with High Bio Content Obtained from Linen Byproducts

et al. 2019

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Green composites, with more than 78 wt.% of products obtained from linen linum usitatissimum, were developed in this research work. Epoxidized linseed oil (ELO) was used as bio-based resin, a mix of nadic methyl anhydride (MNA) and maleinized linseed oil (MLO) were used as cross-linkers and finally, flax fabrics were used to obtain composite laminates by resin transfer molding (RTM). The flax fibers were modified using amino-silane, glycidyl-silane and maleic anhydride treatment in order to increase the compatibility between lignocellulosic fibers and the polymeric matrix. Mechanical and thermal properties were studied by flexural, tensile and impact test, as well as dynamic mechanical analyses (DMA) to study the viscoelastic behavior. Contrary to what could be expected, when fibers are previously treated in presence of MLO, a reduction of anchorage points is obtained causing a substantial increase in the ductile properties compared with composites without previous fiber treatment or without MLO.

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“…Hill et al undertook research into the vapor sorption behavior of natural fibers and concluded that their hydrophilic character comes from their chemical composition and porous structure [34]. Many different methods of chemical and physical treatment have been applied in order to resolve this problem [35,36], with fibers employed in single or hybrid composites together with various polymer matrix materials [27].…”

Section: Introductionmentioning

confidence: 99%

“…For the purpose of improving fiber matrix adhesion in polymer composites, materials with chemical treatment of FFR have also been developed [36]. Characterization of FFR following treatment with acetone, alkaline, saline and diluted epoxy has revealed changes in surface energy, morphology and chemistry.…”

Section: Introductionmentioning

confidence: 99%

Influence of moisture absorption on the impact properties of flax, basalt and hybrid flax/basalt fiber reinforced green composites

Živković

Fragassa

Pavlović

et al. 2017

Composites Part B: Engineering

179

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Effect of Common Chemical Treatments on the Process Kinetics and Mechanical Properties of Flax/Epoxy Composites Manufactured by Resin Infusion

Cited by 5 publications

References 27 publications

Effects of Wet and Dry Treatments on Surface Functional Groups and Mechanical Properties of Flax Fiber Composites

Effects of Wet and Dry Treatments on Surface Functional Groups and Mechanical Properties of Flax Fiber Composites

Maleinized Linseed Oil as Epoxy Resin Hardener for Composites with High Bio Content Obtained from Linen Byproducts

Influence of moisture absorption on the impact properties of flax, basalt and hybrid flax/basalt fiber reinforced green composites

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