Accelerated retting cum softening of coconut fibre

Basu, Gautam; Mishra, Leena; Jose, Seiko; Samanta, Amalendu

doi:10.1016/j.indcrop.2015.08.012

Cited by 68 publications

(23 citation statements)

References 21 publications

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“…The progression of the retting process results in the decrease/deterioration of pectin, fat, pentosan, and tannin contents but there is no loss of lignin or cellulosic substances. 45,57,58 However, some of the researchers have also tried pollution-and hazard-free coir ber treatment by using closed anaerobic reactor-based technology. 59…”

Section: Retting Of Coir Bersmentioning

confidence: 99%

A state-of-the-art review on coir fiber-reinforced biocomposites

et al. 2021

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Section: Retting Of Coir Bersmentioning

confidence: 99%

A state-of-the-art review on coir fiber-reinforced biocomposites

et al. 2021

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“…The customary method to extract the coir fibers from the husk is done by soaking or retting the fibers in ponds and lagoons. More recently, enzymes have been added to retting tanks to reduce the retting period from months to days . Retting enables easier removal of the fibers from the coir pith (or coir dust) which is the corky, softer material surrounding the fibers, and acts to hold them together in the husk.…”

Section: Introductionmentioning

confidence: 99%

Characterization and mechanical property of Trinidad coir fibers

Mathura

Cree

2016

J of Applied Polymer Sci

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Coir fibers were retted in distilled water (DW) and saline water (SW) for up to 12 weeks. Fibers had diameters of 0.16 mm to 0.56 mm, gauge lengths (GL) of 20 mm and 50 mm, and loaded at strain rates of 5, 20, 40, and 60 mm/min. Tensile strength, Young's modulus, and strain at break properties were evaluated and the results statistically analyzed using analysis of variance (ANOVA). For non-retted fibers, as the gauge length decreased, the tensile and strain at break increased by 14% and 42%, respectively, while the stiffness increased by 33% for larger gauge lengths. As the fiber diameter decreased, the tensile strength increased from 48.45 MPa to 134.41 MPa for 50 mm gauge length fibers. X-ray diffraction (XRD) was used to calculate the crystallinity index (CI) of the coir fibers. Secondary electron microscopy was used to assess the fiber surface and fractured area. Although the chemical composition was different, the properties of Trinidad coir fibers were in-line with coir fibers from other parts of the world making them an ideal material of choice for composites.

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“…In region II occurs cellulose degradation (290-360 • C). On the order hand, lignin presents higher thermal stability and degradation even above 500 • C [77]. Comparing the mass losses of UCF and CF, the higher values were observed for CF in the regions I and II (8.71% and 76.03%, respectively).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 92%

Immobilization of Low-Cost Alternative Vegetable Peroxidase (Raphanus sativus L. peroxidase): Choice of Support/Technique and Characterization

et al. 2020

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In the present work the radish (Raphanus sativus L.) was used as the low-cost alternative source of peroxidase. The enzyme was immobilized in different supports: coconut fiber (CF), calcium alginate microspheres (CAMs) and silica SBA-15/albumin hybrid (HB). Physical adsorption (PA) and covalent binding (CB) as immobilization techniques were evaluated. Immobilized biocatalysts (IBs) obtained were physicochemical and morphologically characterized by SEM, FTIR and TGA. Also, optimum pH/temperature and operational stability were determined. For all supports, the immobilization by covalent binding provided the higher immobilization efficiencies—immobilization yield (IY%) of 89.99 ± 0.38% and 77.74 ± 0.42% for HB and CF, respectively. For CAMs the activity recovery (AR) was of 11.83 ± 0.68%. All IBs showed optimum pH at 6.0. Regarding optimum temperature of the biocatalysts, HB-CB and CAM-CB maintained the original optimum temperature of the free enzyme (40 °C). HB-CB showed higher operational stability, maintaining around 65% of the initial activity after four consecutive cycles. SEM, FTIR and TGA results suggest the enzyme presence on the IBs. Radish peroxidase immobilized on HB support by covalent binding is promising in future biotechnological applications.

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Accelerated retting cum softening of coconut fibre

Cited by 68 publications

References 21 publications

A state-of-the-art review on coir fiber-reinforced biocomposites

A state-of-the-art review on coir fiber-reinforced biocomposites

Characterization and mechanical property of Trinidad coir fibers

Immobilization of Low-Cost Alternative Vegetable Peroxidase (Raphanus sativus L. peroxidase): Choice of Support/Technique and Characterization

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