Effects of Alkali Treatment on the Microstructure, Composition, and Properties of the Raffia textilis Fiber

Elenga, Raymond Gentil; Djémia, Philippe; Tingaud, David; Chauveau, Thierry; Maniongui, Jean Goma; Dirras, G.

doi:10.15376/biores.8.2.2934-2949

Cited by 61 publications

(36 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, based on TGA graphs obtained for Pennisetum purpureum fibres in previous studies [31], alkali-treated Pennisetum purpureum fibres were determined to leave more residue than untreated Pennisetum purpureum fibres. This also was reported by Elenga et al for Raffia textillis fibres; compared with untreated fibres, a greater quantity of residue remained for 5% and 10% alkali-treated fibres after the final degradation temperature was attained during TGA [44].…”

Section: Thermogravimetric Analysis (Tga) and Derivative Thermogravimsupporting

confidence: 84%

Thermal behaviour and dynamic mechanical analysis of Pennisetum purpureum/glass-reinforced epoxy hybrid composites

Ridzuan

Majid

Afendi

et al. 2016

Composite Structures

111

View full text Add to dashboard Cite

Section: Thermogravimetric Analysis (Tga) and Derivative Thermogravimsupporting

confidence: 84%

Thermal behaviour and dynamic mechanical analysis of Pennisetum purpureum/glass-reinforced epoxy hybrid composites

Ridzuan

Majid

Afendi

et al. 2016

Composite Structures

111

View full text Add to dashboard Cite

“…To improve the mechanical performance of the composite, various treatments can be carried out on natural fibers to increase their compatibility with polymer matrices. Alkaline treatments promote better fiber adhesion to the matrix by mechanical anchoring (Elenga et al 2013(Elenga et al , 2934. Isiaka et al 2014, 1 reported that polyester matrix composites reinforced with chemically treated sisal fibers displayed higher tensile strength and elastic modulus, with less dispersion in the results due to fiber homogenization after treatment.…”

Section: Introductionmentioning

confidence: 99%

Hemicellulose Removal in Curaua (Ananas erectifolius) Fibers for Polyester Composites

Rodrígues

García

Leão

et al. 2018

View full text Add to dashboard Cite

Introduction: Alkaline treatments extract hemicellulose from the fibers, which can be reused in the manufacture of other materials, and the cellulosic portion can be applied as reinforcement in a composite. This way, all components of the fibers are utilized.Method: In this work, curaua fibers (Ananas erectifolius) were treated with potassium hydroxide (KOH) to solubilize part of the hemicellulose and lignin, and the cellulose-rich fibers were used to manufacture composites with unsaturated polyester, which were characterized to investigate the effect of the treatment on their properties.Results: The alkaline treatment removed large portions of hemicellulose and significantly degraded the crystalline cellulose and lignin, resulting in a small increase (2.4%) in overall crystallinity and with a negative impact on their thermal stability. SEM images showed defibrillation of the treated fiber and fibril separation, increasing roughness and surface contact area.Conclusions: In all, although the alkaline treatment substantially modified the fibers and no significant changes were observed in the mechanical properties of the composite, the total removal of hemicellulose was found to affect the integrity of cellulose fibers making harder their application as reinforcement. However, the higher cellulose content could be useful for other applications.

show abstract

“…The development of agriculture is one of the greatest threat to the tropical forests. By considering the context of preserving the biodiversity, the plants that can be harvested several times in a growing cycle are the most favorable [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of Alkali Treatment on Physico-Chemical Properties of Malaysian Bamboo Fiber: A Preliminary Study

2018

MJAS

View full text Add to dashboard Cite

In the present study, the effect of alkaline treatment on the morphology and physico-chemical properties of Malaysian bamboo fibers was elucidated. The fibers were extracted from raw bamboo culm using alkaline solution with concentrations of 0 and 10 wt% at 24 hours and followed by roller milling techniques. The treated and untreated fibers were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). Apart from that, the mechanical properties of single fiber were also investigated. It was found that the tensile strength and modulus of the alkali-treated fiber were improved by 45.6 and 72%, respectively, compared to the untreated fiber. The surface morphology of the treated fiber was improved in which the surface roughness has been reduced significantly as proven in SEM. The FTIR and TGA data suggested that alkaline treatment gradually removed the lignin and hemicellulose. These findings highly recommended that, local bamboo fiber could be used as a reinforcement agent for composite making.

show abstract

Effects of Alkali Treatment on the Microstructure, Composition, and Properties of the Raffia textilis Fiber

Cited by 61 publications

References 0 publications

Thermal behaviour and dynamic mechanical analysis of Pennisetum purpureum/glass-reinforced epoxy hybrid composites

Thermal behaviour and dynamic mechanical analysis of Pennisetum purpureum/glass-reinforced epoxy hybrid composites

Hemicellulose Removal in Curaua (Ananas erectifolius) Fibers for Polyester Composites

Influence of Alkali Treatment on Physico-Chemical Properties of Malaysian Bamboo Fiber: A Preliminary Study

Contact Info

Product

Resources

About