Part II: Effecta on Chemical Modification

doi:10.1177/004051755902900509

Textile Research Journal

1959

DOI: 10.1177/004051755902900509

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Part II: Effecta on Chemical Modification

Abstract: Mercerized cotton yarn and partially acetylated cotton yarn were irradiated with cathode rays. Mercerized yarn and partially acetylated yarns were also prepared from cathode ray irradiated cotton yarn. The copper number, the intrinsic viscosity, and the tensile strength of these samples were investigated. The results and the behavior patterns of these values were similar to those of the raw cotton yarn from which these

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Grafting of methyl methacrylate onto wood pulp with the KBrO₃redox system

Yousef

Nada

1990

Acta Polymerica

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Paper wood pulp was grafted with methyl methacrylate using the potassium bromate redox system. The effects of monomer concentration, reaction time, initiator concentration, and liquor ratio on the graft yield, polymer loading, and water retention value of the grafted samples were studied. The optimum conditions of the grafting reaction were determined. Pfropfung oon Methylmethacrylat auf Holzzellstoff mit dem KBr0,-Redox-SystemAuf Holzzellstoff wurde unter Verwendung eines Kaliumbromat-Redox-Systems Methylmethacrylat gepfropft. Die Einfliisse von Monomerkonzentration, Reaktionszeit, Initiatorkonzentration und Flottenverhaltnis auf den Pfropfgrad, die Menge des gebildcten Polymers und das Wasserriickhaltevermogen des gepfropften Zellstoffs wurden untersucht. Die optimalen Bedingungen fur die Pfropfreaktion wurden ermittelt. ITpueuma fiemun.wemaIEpunama IE apeeecnoiL yenamnose e npucymcmcuu o~~~ume~bno-eoccmanoeumeabnoiL cucmeAM KBrO,

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Grafting of methyl methacrylate onto wood pulp with the KBrO₃redox system

Yousef

Nada

1990

Acta Polymerica

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Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Rattan¹,

Maitra²,

Misra

et al. 2008

J of Applied Polymer Sci

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Ethyl acrylate (EA), Vinyl imidazole (VI), and their binary mixture have been copolymerized onto rayon in aqueous medium by mutual method using g-radiation. The graft yield has been determined as a function of different reaction parameters such as total dose, concentration of vinyl monomers, and amount of water. Effect of surfactant (1-octane sulfonic acid, sodium salt) has been studied on the percentage of grafting of EA, VI, and (EA þ VI). A plausible mechanism has been suggested to explain the observed behavior of the surfactant on grafting. Water retention and moisture regain of the grafted film was determined at appropriate relative humidity. The graft copolymers have been characterized by IR spectroscopy and scanning electron microscopic methods.

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Grafting vinyl polymers onto cellulose by high energy radiation. I. High energy radiation‐induced graft copolymerization of styrene onto cellulose

Huang¹,

Immergut²,

Immergut³

et al. 1963

J. Polym. Sci. A Gen. Pap.

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Styrene has been grafted onto cellulose in the form of cotton linters, cotton cloth, and rayon by ionizing radiation. Styrene was brought into intimate contact with cellulose by extension of the “inclusion” technique of Staudinger and Krässig, and graft copolymers were prepared by exposure to high energy electrons or to gamma‐rays from Co60. Substantial grafting was obtained by irradiation in air, nitrogen, or in vacuum. The products were purified by exhaustive extraction with benzene in a Soxhlet apparatus to remove the polystyrene homopolymer. The graft copolymers were characterized by removing the cellulose backbone by hydrolysis and determining the molecular weights of the residual polystyrene. Molecular weights of the grafted polystyrene were found to be considerably higher than those of the extracted homopolymer polystyrene or the polystyrene formed by irradiating styrene in bulk. Calculations based on the molecular weights of cellulose and polystyrene in the graft copolymer indicate that despite the substantial grafting, only one in 5,000–10,000 anhydroglucose units or one in 10–20 cellulose chains carried a grafted polystyrene chain.

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Part II: Effecta on Chemical Modification

Cited by 3 publications

References 3 publications

Grafting of methyl methacrylate onto wood pulp with the KBrO₃redox system

Grafting of methyl methacrylate onto wood pulp with the KBrO₃redox system

Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Grafting vinyl polymers onto cellulose by high energy radiation. I. High energy radiation‐induced graft copolymerization of styrene onto cellulose

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Part II: Effecta on Chemical Modification

Cited by 3 publications

References 3 publications

Grafting of methyl methacrylate onto wood pulp with the KBrO3redox system

Grafting of methyl methacrylate onto wood pulp with the KBrO3redox system

Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Grafting vinyl polymers onto cellulose by high energy radiation. I. High energy radiation‐induced graft copolymerization of styrene onto cellulose

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Product

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About

Grafting of methyl methacrylate onto wood pulp with the KBrO₃redox system

Grafting of methyl methacrylate onto wood pulp with the KBrO₃redox system