Matériaux : les nouveaux champs de recherche et développement pour la valorisation des fibres végétales techniques (lin fibres et chanvre)

Bono, Pierre; Duc, Anne Le; Lozachmeur, Marie; Day, Arnaud

doi:10.1051/ocl/2015041

Cited by 12 publications

(5 citation statements)

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“…In the 1930s, cultivation was forbidden in the vast majority of Western countries due to the fact that hemp and marijuana come from the same genus and species plant (Cannabis sativa L.), and this introduced a lot of confusion and social and political controversies. In the last two decades, the increasing consideration of natural resources and energy conservation has renewed the interest on hemp as a "new" low-cost, ecological, biodegradable, sustainable, recyclable, and multipurpose biomaterial (Shahzad 2012;Bouloc 2013;Bono et al 2015).…”

Section: Productionmentioning

confidence: 99%

Hemp-Based Materials for Metal Removal

Morin‐Crini

Loiacono

Placet

et al. 2018

Environmental Chemistry for a Sustainable World

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Section: Productionmentioning

confidence: 99%

Hemp-Based Materials for Metal Removal

Morin‐Crini

Loiacono

Placet

et al. 2018

Environmental Chemistry for a Sustainable World

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“…New developments in packaging, furniture, building and automotive industries have been described. 2,4–7…”

mentioning

confidence: 99%

“…New developments in packaging, furniture, building and automotive industries have been described. 2,[4][5][6][7] Hemp is one of the bast fibers grown in temperate climates that have provided many important products, such as fibers for textiles and seeds (oil), as well as pulp and paper. Hemp elementary fibers are on average 13-15 mm long with a diameter between 15 and 20 mm.…”

mentioning

confidence: 99%

Toward the cottonization of hemp fibers by steam explosion – Part 1: defibration and morphological characterization

Sauvageon

Lavoie²,

Segovia³

et al. 2017

Textile Research Journal

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Fine hemp fibers (cottonized hemp) were processed using steam explosion. The quantification of the defibration rate was performed by image processing. Based on this method, the hemp defibration was optimized using a response surface methodology based on three-variable central composite design for the production of elementary fibers with low variability. Optimal parameters for the steam processes were as follows: time = 4.1 min; temperature = 191℃. Biomass was impregnated with a solution of NaOH (8%) before treatment, leading to a defibration rate of 91.2%, which is producing ≈50% fibers with length <3 mm, in good agreement with the experimental data. Damaged fibers originating from the conjugated effect of steam explosion and alkali hydrolysis were also observed.

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“…For business purposes, studies done on fibers are mainly concerned with industrially produced plants like flax, hemp, palm kernel, cotton, banana, etc. [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the addition of oil palm mesocarp fiber on the physical and mechanical properties of fiber cement mortar composites

Fokam¹,

Toumi²,

Kenmeugné³

et al. 2021

SN Appl. Sci.

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Composite materials based on natural fibers are increasing in demand in various sectors of industry because of their interesting specific properties. This work is a contribution to the valorization, of plant fibers from agricultural plantations in Cameroon, in fiber cement mortar (FCM). This paper studies the influence of the addition of oil palm mesocarp fiber (OPMF) on the physical (water absorption, density and compactness) and mechanical (compressive strength and flexural strength) properties of cement mortars. The fibers used in this paper are extracted from oil palm mesocarp (palm kernel pulp) by a mechanical and manual process. Cement mortar specimens were then made with different proportions of fibers: 0% (reference mortar), 1%, 2%, 3% and 3.5% fibers. Physical and mechanical tests are then carried out on our specimens. Regardless of the duration of immersion in water, the results show that the water absorption rate increases with a greater amount of fiber in the FCM specimens. On the other hand, an inverse effect is observed on density, which decreases from 2277.5 (samples with 0% fiber) to 942.1 kg/m3 (samples with 3.5% fiber) for apparent density and from 2641.2 to 1945.7 kg/m3 for absolute density. On the mechanical properties, there is a steady decrease in compressive strength from 42.47 (for the reference mortar at 0% fiber) to 31.1 MPa (for the sample at 3.5% fiber). In bending, there is first an increase and then a decrease in strength with the amount of fibers. The maximum flexural strength is obtained for a 2% fiber composition. The FCM has a better strength/density ratio. Finally, the addition of OPMF, in small proportion in the cement mortar, allows a lightening of the structure, but induces a small decrease in mechanical resistance. Our FCM can be used in the manufacture of cinderblocks or as internal wall roughcoating mortar.

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Matériaux : les nouveaux champs de recherche et développement pour la valorisation des fibres végétales techniques (lin fibres et chanvre)

Cited by 12 publications

References 0 publications

Hemp-Based Materials for Metal Removal

Hemp-Based Materials for Metal Removal

Toward the cottonization of hemp fibers by steam explosion – Part 1: defibration and morphological characterization

Experimental study of the addition of oil palm mesocarp fiber on the physical and mechanical properties of fiber cement mortar composites

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