Wood versus Plant Fibers: Similarities and Differences in Composite Applications

Madsen, Bo; Gamstedt, E. Kristofer

doi:10.1155/2013/564346

Cited by 109 publications

(63 citation statements)

References 62 publications

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“…In this direction, the fibers carry most of the load of the composite, which is influenced by cellulose content, lumen size, and microfibril angle (Madsen and Gamstedt 2013).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Almost Forgotten Resources – Biomechanical Properties of Traditionally Used Bast Fibers from Northern Angola

Senwitz¹,

Kempe²,

Neinhuis³

et al. 2016

BioResources

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The wide use of natural fibers has a long-standing history in Africa. In northern Angola, three native fiber plant species, namely Urena lobata, Triumfetta cordifolia, and Dombeya burgessiae, were investigated with regard to their potential usage in modern applications, such as green composites. Bast fibers of the three species were analyzed morphologically, chemically, and mechanically to determine properties such as fiber density, cellulose content, Young's modulus, tensile strength, and breaking strain. In comparison to other natural fibers, all three species were characterized by high Young's moduli up to 60 GPa and tensile strengths up to 950 MPa, yet retting is crucial to unfold the maximum strength of the fibers. Extending the retting time revealed higher values but probably negatively influences economic efficiency. The results demonstrated that the analyzed plants deliver strong and resistant fibers; based on their biomechanical performance, they are alternatives to commercially used natural fibers, such as jute (Corchorus spp.). However, as with other natural fibers, there was high variation in the mechanical properties in the studied species.

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“…In this direction, the fibers carry most of the load of the composite, which is influenced by cellulose content, lumen size, and microfibril angle (Madsen and Gamstedt 2013).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Almost Forgotten Resources – Biomechanical Properties of Traditionally Used Bast Fibers from Northern Angola

Senwitz¹,

Kempe²,

Neinhuis³

et al. 2016

BioResources

View full text Add to dashboard Cite

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“…2 didn't exhibit any visible changes, (5 on 5). Plywood was made of wood veneers mainly composed of cellulosic fibres as well as jute fibres [9]; yet they were not embedded in the added resin. The more visible changes on the surface for the biocomposite indicate that the PLA resin has an important part to play in the change of surface of the biocomposite.…”

Section: Discussionmentioning

confidence: 99%

“…On absorbing water, the fibre diameter expands, debonding the fibre even more from the matrix. Therefore, adding a protective layer of a resin which is not sensitive to moisture and heat, such as polyurethane or a biosourced varnish, would act as a moisture barrier coating [9] and improve the surface resistance.…”

Section: Discussionmentioning

confidence: 99%

“…The fibres were treated with sodium hydroxide (NaOH) to reduce moisture sensitivity by strong bonding of the cell wall polymers in the fibre with the matrix [9]. Jute fibres were immersed for 2 h in 2 % NaOH solution, rinsed, dried for 2 days outside and then dried in an oven at 140°C for 3 h. Then layers of matrix and fibres were alternately stacked in a mould and compression moulded at 180°C and 200 kg/cm 2 pressure, to form a board of 5 mm thickness.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Surface Resistance of Jute Fibre/Polylactic Acid Biocomposite to Wet Heat

Zandvliet

Bandyopadhyay

Ray

2015

J. Inst. Eng. India Ser. D

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Jute fibre/polylactic acid (PLA) composite is of special interest because both resin and reinforcement come from renewable resources. Thus, it could be a more ecofriendly alternative to glass fibre composite [1] and to conventional wood-based panels made with phenolformaldehyde resin which present many drawbacks for the workers and the environment [2]. Yet the water affinity of the natural fibres, the susceptibility of PLA towards hydrolysis and the low glass transition of the PLA raise a question about the surface resistance of such composites to wet heat in service condition for a furniture application [3]. In this work, the surface resistance of PLA/jute composite alone and with two different varnishes are investigated in regard to an interior application following the standard test method in accordance to BS EN 18721:2009: ''Furniture: assessment of surface resistance to wet heat''. It is compared to two common wood based panels, plywood and hardboard. After test, the composite material surface is found to be more affected than plywood and hardboard, but it becomes resistant to wet heat when a layer of biosourced varnish or petrol-based polyurethane varnish are applied on the surface.

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“…WPCs have low density, low equipment abrasion caused by wood fibres and WPCs can be easily surface modified. 1,2 An often applied biodegradable polymer is stereoselective polylactic acid (PLA), one of the stereoisomers of polylactic acid. 1 PLA is an interesting bio-based polymeric matrix due to its biodegradability, sealing ability, high tensile strength properties and good availability.…”

Section: Introductionmentioning

confidence: 99%