1—the Combination Between Lignin and Polyuronic Acid in Jute Fibre

Sarkar, Prasanta Kumar; Chatterjee, H.; Mazumdar, A.; Pal, Koushik

doi:10.1080/19447024808659397

Cited by 19 publications

(6 citation statements)

References 5 publications

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“…A portion of the lignin is known to be removed easily during the treatment [25], and a small decrease in lignin content has been shown to have a favorable effect on fungal [3] and bacterial [2,14] decomposition of jute. Moreover alkali breaks the ester linkage between lignin and hemi-cellulose [28] and makes the latter available. Many fungi unable to grow on filter paper and jute have been observed to grow on alkali-treated jute and to produce appreciable quantities of cellulose in the medium [4].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Physical and Chemical Properties of Cellulosic Fibers on Anaerobic Deterioration by Pure Cultures

Ghose

King

1963

Textile Research Journal

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Decomposition of cellulosic fibers by thirteen strains including three species of the obligately anaerobic genus Ruminococcus has been investigated with regard to the effects of the chemical composition and physical state of the fiber. Of the thirteen strains only six were actively cellulolytic. In test systems containing 50 mg of fiber in 10 ml of medium, nearly complete solubilization of substrate was observed in 11 to 14 days. The substrates were jute, cotton, alfalfa, filter paper, and varous materials derived from these. As with other cellulolytic systems, crystalline celluloses and coarse particles were resistant to attack. Gravimetric assays indicated that lignification reduced digestibility more than could be predicted from the lignin content alone, suggesting that in part the resistance of lignified fibers results from masking of the cellulose. The protective effect of lignification in jute is further supported by the fact that alfalfa stems having the same lignin content as jute were about five times as digestible as jute. Acid treatment enhanced the resistance of both jute and cotton to degradation. Alkali treatment decreased resistance to degradation of both jute and cotton, the effect on jute~ein~particu~arIy pronounced. Pure a-celluloses were rapidly degraded regardless of their orrgin. Stimulation of cellulose degradation by the hemicellulose present in the holocellulose was negligible.

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Section: Discussionmentioning

confidence: 99%

The Effects of Physical and Chemical Properties of Cellulosic Fibers on Anaerobic Deterioration by Pure Cultures

Ghose

King

1963

Textile Research Journal

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“…Fiber Based on the rates of delignification of defatted jute before and after treatment with dilute caustic soda at room temperature and the rise in acid value after such alkali treatment, as well as with the progressive removal of lignin, a hypothesis on the combination between lignin and the uronic acid part of the hemicellulose was put forth [16]. This has recently been corroborated by Bhattacherjee and Callow [1].…”

Section: Experimental Lignin-p Olyuronide H Emicelluloses Linkage In mentioning

confidence: 91%

Note on the Lignin and Hemicellulose of Jute

Sarkar

Mazumdar

1955

Textile Research Journal

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“…The weighing was done in a Mettler Toledo AG245 Electronic Balance. The analysis of the untreated murta fibers for determining the chemical composition was done by the Indian Jute Industries' Research Association, Kolkata, India, by using the reported chemical analysis methods . Thermo gravimetric analysis (TGA) was done by using Perkin Elmer STA 6000 Simultaneous Thermal Analyzer.…”

Section: Methodsmentioning

confidence: 99%

Characteristics of murta bast fiber reinforced epoxy composites

Barbhuiya

Choudhury²,

Ismail

2016

J of Applied Polymer Sci

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The growing global concern over environment protection has led to the application of natural fiber reinforced polymer composites as alternative materials in manufacturing sectors. Various natural fibers are therefore being explored for reinforcement of polymer matrices. In the present work, murta bast fibers of varying length and weight percent are mixed randomly with the epoxy matrix and the composites are prepared from these mixtures by using the hand lay-up method. The composites are characterized on the basis of density, thermal gravimetric analysis, infrared spectroscopy, scanning electron microscopy, tensile strength, flexural strength, compressive strength, impact strength, and Rockwell hardness studies. Tensile, flexural, and compressive moduli of the composites are also determined. The tensile strength of the composite was analyzed in the light of the different analytical models. Composites containing 30 weight % fibers of length 25 or 35 mm have the optimum mechanical properties. Murta bast fiber has the characteristics to become a good natural material for reinforcement.

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1—the Combination Between Lignin and Polyuronic Acid in Jute Fibre

Cited by 19 publications

References 5 publications

The Effects of Physical and Chemical Properties of Cellulosic Fibers on Anaerobic Deterioration by Pure Cultures

The Effects of Physical and Chemical Properties of Cellulosic Fibers on Anaerobic Deterioration by Pure Cultures

Note on the Lignin and Hemicellulose of Jute

Characteristics of murta bast fiber reinforced epoxy composites

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