On the microstructure and physical properties of untreated raffia textilis fiber

Elenga, Raymond Gentil; Dirras, G.; Maniongui, Jean Goma; Djémia, Philippe; Biget, M.

doi:10.1016/j.compositesa.2009.01.001

Cited by 110 publications

(54 citation statements)

References 30 publications

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“…They ensure carbon neutrality when being burned, which is important for ecological issues (Netravali and Chabba 2003). Furthermore, they are biodegradable, renewable, and less abrasive to production machinery; they show a high specific stiffness and superior properties as acoustic and thermal isolators (Netravali and Chabba 2003;Wambua et al 2003;Elenga et al 2009;Faruk et al 2012). The costs of the fibers (on a volumetric basis) are low (Tahir et al 2011;Faruk et al 2012).…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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 percentage of water absorption of our samples for the twelve sampling zones is done by (8). The synthesis result is presented in Table 1.…”

Section: Determination Of the Percentage Of Water Absorptionmentioning

confidence: 99%

“…The use of raffia in the textile industry is equally growing. Studies are also carried out on the study of the microstructure and the physical properties of fibers coming from the leaves of raffia; the drying kinetics of these fibers is carried in view of its use as roofing elements [8,9]. Mechanical studies have been carried out on the long-term creep behavior of the Raffia vinifera stem in compression and flexion tests [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith ofRaffia viniferaof Bandjoun, Cameroon

Mbou

Njeugna

Kémajou

et al. 2017

Advances in Materials Science and Engineering

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The present work focuses on the study of the water absorption phenomenon through the pith of Raffia vinifera along the stem. The water absorption kinetics was studied experimentally by the gravimetric method with the discontinuous control of the sampling mass at temperature of 30 ∘ C. The samples of 70 mm × 8 mm × 4 mm were taken from twelve sampling zones of the stem of Raffia vinifera. The result shows that the percentage of water absorption of the pith of Raffia vinifera increases from the periphery to the center in the radial position and from the base to the leaves in the longitudinal position. Fick's second law was adopted for the study of the water diffusion. Eleven models were tested for the modelling of the water absorption kinetics and the model of Sikame Tagne (2014) is the optimal model. The diffusion coefficients of two stages were determined by the solution of the Fick equation in the twelve sampling zones described by Sikame Tagne et al. (2014). The diffusion coefficients decreased from the center to the periphery in the radial position and from the base to the leaves in the longitudinal position.

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“…Raffia texillia fibers density is lower than all vegetable fibers (Elenga et al, 2009). There are a negative correlation between the density and Young's modulus.…”

Section: Fibermentioning

confidence: 99%

“…Mechanical properties of Retama monosperma and some principal fibers (Bledzki and Gassan, 1999;Sandy and Bacon, 2001;Bismarck et al, 2005;Elenga et al, 2009;Elenga, 2009;Agu, 2014 Table 6. Density of some vegetable fiber (Sandy and Bacon, 2000;Béakou et al, 2008;Elenga et al, 2009 13.3 GPa was found for R. monosperma fibers (Table 5). Compared to the Raffia farinifera (28-36 GPa), Young's modulus value of R. monosperma fiber was lower and it was about half that of Jute fiber (26.5 GPa) and Flax fiber (27.6 GPa).…”

Section: Mechanical Characteristicsmentioning

confidence: 99%

Extraction and characterization of Retama monosperma fibers

Eddine¹,

Meriem²

2015

Afr. J. Biotechnol.

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The aims of this study were to determine the good conditions for fibers extraction from Retama monosperma young stems and their mechanical, physical and chemical characteristics. The fibers were extracted using a range of NaOH concentration from 1 to 16% in a period of treatment of 1 to 24 h, coupled with a physical treatment. For the evaluation of physico-mechanical characteristics, 200 samples were performed in the tensile test. The biochemical composition of the fibers was determined after separation of the parietal compounds. The results show that the best fiber yield was 11.51% obtained by a treatment of 14% NaOH for 8 h, followed by a physical treatment. The fibers biocomposition was 87.3% of cellulose, 7.5% of hemicelluloses and 1% of lignin. The Young's modulus was 13.3 GPa, tensile strength was 110 MPa and a density was 1.3 g/cm 3 . The average fiber length was 155.7 mm. The fibers yield and characteristics showed that R. monosperma plant may in future be suitable source for natural fibers.

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On the microstructure and physical properties of untreated raffia textilis fiber

Cited by 110 publications

References 30 publications

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

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

Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith ofRaffia viniferaof Bandjoun, Cameroon

Extraction and characterization of Retama monosperma fibers

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