Mechanical properties of chemically-treated hemp fibre reinforced sandwich composites

Kabir, Md. Jahangir; Wang, Hao; Lau, Kin-tak; Cardona, Francisco; Aravinthan, Thiru

doi:10.1016/j.compositesb.2011.06.003

Cited by 183 publications

(84 citation statements)

References 21 publications

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“…Composite specimens are tested for flexural strength according to ASTM D 790 [17,18]. Experiments are performed using Universal Testing Machine and Instron (Model 3366).…”

Section: Flexuralmentioning

confidence: 99%

Flexural Strength Analysis of Starch Based Biodegradable Composite Using Areca Frond Fibre Reinforcement

Heckadka

Kini

Pai

et al. 2014

International Journal of Manufacturing Engineering

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Natural fibres and biodegradable matrices are being considered nowadays as substitutes to synthetic fibre reinforced polymer composites mainly in sectors where high load carrying capacity and high strength are not prerequisites. Present study utilizes biodegradable matrix composite prepared by varying the weight of the base material (95-170 g), binder (5-10 g), and plasticizer (5-20 g) with treated areca frond fibres as reinforcement. Contents are transferred to a pneumatic press, compacted, and subjected to curing. Taguchi method with L8 orthogonal array was used to reduce the number of experiments. Specimens for the flexural tests are cut out from the prepared laminates and tests are performed using UTM. Maximum flexural strength of 16.97 MPa was obtained with a combination of base (170 g), binder (10 g), and plasticizer (5 g). Analysis of the results indicated that plasticizer has the maximum effect on flexural strength of the biodegradable composites.

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“…Composite specimens are tested for flexural strength according to ASTM D 790 [17,18]. Experiments are performed using Universal Testing Machine and Instron (Model 3366).…”

Section: Flexuralmentioning

confidence: 99%

Flexural Strength Analysis of Starch Based Biodegradable Composite Using Areca Frond Fibre Reinforcement

Heckadka

Kini

Pai

et al. 2014

International Journal of Manufacturing Engineering

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“…Chemical treatments facilitate efficient coupling with polymeric resin by exposing more reactive groups on the fiber surface and as a result, the interfacial properties can be improved and natural fiber reinforced polymer composites with better mechanical properties can be prepared 3,[23][24][25][26][27][28][29][30][31] .…”

Section: Chemical Treatments Of Areca Fibersmentioning

confidence: 99%

Influence of Chemical Treatments on Flexural Strength of Areca Fiber Reinforced Epoxy Composites

Dhanalakshmi¹,

Ramadevi²,

Bennehalli³

2015

Chem Sci Trans

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Natural areca fibers were treated with sodium hydroxide, potassium permanganate, benzoyl chloride and acrylic acid to improve interfacial adhesion between the areca fiber and epoxy resin and to fabricate areca fiber reinforced epoxy composites with improved mechanical properties. The untreated and chemically treated areca fiber reinforced epoxy composites were prepared with 40%, 50%, 60% and 70% fiber loadings. The investigation of flexural strength was done for all areca/epoxy composites. Untreated and chemically treated areca/epoxy composites with 60% fiber loading showed higher flexural strength values. The acrylic acid treated areca fiber reinforced epoxy composites with 60% fiber loading showed highest flexural strength values amongst all untreated and chemically treated areca/epoxy composites with same 60% fiber loading.

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“…The modification of hemp fibers with alkaline solution, acetic anhydride, maleic anhydride, and silane was shown to improve the interfacial shear strength of hemp-reinforced polylactide, and hemp-reinforced UP composites (Sawpan et al 2011). Alkalization, silane, and acetylation treatments on the hemp fibers were investigated for improving the mechanical properties of hemp-reinforced polyester composites (Kabir et al 2012). The mechanical properties and water absorption of natural fibers-reinforced polymer composites also can be improved by using isocyanates as coupling agents.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Water Absorption of Hemp Fibers–Reinforced Unsaturated Polyester Composites: Effect of Fiber Surface Treatment with a Heterofunctional Monomer

Chen¹,

Liu²,

Qiu³

2013

BioResources

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Hemp fibers-reinforced unsaturated polyester (UP) composites were prepared by hand lay-out compression molding. Hemp fibers were treated with isocyanatoethyl methacrylate (IEM), using dibutyltin dilaurate as a catalyst. The results indicated that fiber treatment significantly increased tensile strength, flexural strength, flexural modulus, and water resistance of the resulting composites, and yet decreased the impact strength of the composites. The water absorption characteristics for composite samples immersed in water at room temperature followed Fickian behaviour, but for those evaluated at temperature 100 °C, there was a deviation from Fickian behaviour. Scanning electron microscope graphs of the tensile-fractured surface of hemp-UP composites revealed that fiber treatment with IEM greatly improved the interfacial adhesion between hemp fibers and UP resins. Fourier transform infrared analysis of the treated fibers showed that some IEM was covalently bonded onto hemp fibers.

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Mechanical properties of chemically-treated hemp fibre reinforced sandwich composites

Cited by 183 publications

References 21 publications

Flexural Strength Analysis of Starch Based Biodegradable Composite Using Areca Frond Fibre Reinforcement

Flexural Strength Analysis of Starch Based Biodegradable Composite Using Areca Frond Fibre Reinforcement

Influence of Chemical Treatments on Flexural Strength of Areca Fiber Reinforced Epoxy Composites

Mechanical Properties and Water Absorption of Hemp Fibers–Reinforced Unsaturated Polyester Composites: Effect of Fiber Surface Treatment with a Heterofunctional Monomer

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