Photochemistry of Cotton and Chemically Modified Cotton

Daruwalla, E. H.; D'Silva, A. P.; Mehta, Akansha

doi:10.1177/004051756703700301

Cited by 19 publications

(1 citation statement)

References 24 publications

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“…The effect of heat and light on the properties of cotton, lignocellulosic and protein fibers has been extensively investigated 1, 3, 17–21. Untreated and alkali treated flax and jute fibers were found not to be affected by heat below 170 °C, whereas temperatures above 170 °C were found to drastically affect the tenacity and degree of polymerization of cellulose in the fibers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Lignin on the Heat and Light Resistance of Lignocellulosic Fibers

Reddy

Salam

Yang³

2007

Macro Materials & Eng

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The existence of lignin in lignocellulosic fibers increases the loss in breaking tenacity and elongation of fibers when they are exposed to heat and light. Delignification by sulfonation helps to remove some of the lignin from the fibers without affecting the breaking tenacity. The delignified fibers have higher resistance to heat and light exposure compared to the raw fibers. The effect of lignin on the heat and light resistance of kenaf and cornhusk fibers with three different lignin contents was studied in comparison to cotton at various periods of heat and light exposure. The changes in the breaking tenacity, breaking elongation and yellowness of the samples were studied.magnified image

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Section: Introductionmentioning

confidence: 99%

Effect of Lignin on the Heat and Light Resistance of Lignocellulosic Fibers

Reddy

Salam

Yang³

2007

Macro Materials & Eng

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The kinetics of cellulose fiber degradation and correlation with some tensile properties

Testa¹,

Sardella²,

Rossi³

et al. 1994

Acta Polymerica

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Cellulosic degradation of cotton and flax yarns caused by light, heat and heterogeneous acid-catalyzed hydrolysis was studied. These processes were followed by measuring changes in intrinsic fluidity (l/DP,,): two principal stages, characterized by different zero-order kinetics, take place. A relation between changes in intrinsic fluidity with some mechanical properties of the same yarns during the degradation process was found.

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Effect of wavelength region on photo‐induced graft copolymerization onto cellulose

Kubota

Ogiwara

1971

J of Applied Polymer Sci

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SynopsisThe effect. of wavelength region of ultraviolet. light. was examined 011 the nnserisitized photo-induced graft, copolymerization of methyl methacrylate onto cellulose. When the quartz t,ube system was compared to the glass tube system, t.here was no induction period of copolymerization, the rate of reaction was a litt,le larger, the homopolymerization of met,hyl methacrylate was increased causing interference wit,h graft copolymerization, and the depolymerization of grafts and the scission reaction of cellulose chains occurred easily. The number of graft.s was hardly improved by varying the react,ion conditions, and the copolymers obtained generally exhibited low per cent grafting and contained grafts with lower degree of polymerization.

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Photochemistry of Cotton and Chemically Modified Cotton

Cited by 19 publications

References 24 publications

Effect of Lignin on the Heat and Light Resistance of Lignocellulosic Fibers

Effect of Lignin on the Heat and Light Resistance of Lignocellulosic Fibers

The kinetics of cellulose fiber degradation and correlation with some tensile properties

Effect of wavelength region on photo‐induced graft copolymerization onto cellulose

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