Modification of Tussah Silk by Methyl Methacrylate. Part II

Mohanty, N.; Torasia, S. N.; Mohanta, M. C.; Rout, D. K.; Das, H. K.

doi:10.1080/00222338308063290

Cited by 11 publications

(3 citation statements)

References 7 publications

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“…Percent grafting, percent total conversion, and grafting efficiency were calculated in the following way after correction was made for the loss in weight on treatment without MMA solution. x 100 (1) Total conversion (96)…”

Section: Grafting Proceduresmentioning

confidence: 99%

Graft copolymerization of methyl methacrylate on silk fiber using Mohr's salt?potassium persulfate as redox initiator under visible light in a limited aqueous medium

Maji

Banerjee

1996

J. Appl. Polym. Sci.

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SYNOPSISGraft copolymerization of methylmethacrylate onto mulberry silk fibers was studied under photoactive conditions with visible light using the Mohr's salt-potassium persulfate as the redox initiator in a limited aqueous medium. Polymerization in the presence of light at 40 & 1°C was found to be more pronounced than that in the dark at 40 * 1°C. Percent grafting, percent total conversion, and grafting efficiency under different; sets of conditions were studied, and the mechanisms of polymerization and graft copolymer formation were discussed. Characterization of the grafted fibers was done by Fourier transform infrared spectroscopy, scanning electron microscopy, differential scanning calorimetry, and thermogravimetry.

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Section: Grafting Proceduresmentioning

confidence: 99%

Graft copolymerization of methyl methacrylate on silk fiber using Mohr's salt?potassium persulfate as redox initiator under visible light in a limited aqueous medium

Maji

Banerjee

1996

J. Appl. Polym. Sci.

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“…These techniques are promising to be a powerful method for producing substantial modification of fiber properties as well as improving their textile performances. 11,12 The grafting monomers such as methacrylamide (MAA), 13 2-hydroxyethyl methacrylate (HEMA), 14 and grafting binary system 15,16 using MAA and HEMA had been successfully applied on the industrial scale for silk processing. The physical and chemical properties of grafted silk fibers are widely examined as a function of fiber weight gain.…”

Section: Introductionmentioning

confidence: 99%

Thermal characteristics and physical properties of silk fabrics grafted with phosphorous flame retardant agents

Tsukada

Khan

Tanaka

et al. 2011

Textile Research Journal

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The production of flame retardant silk fabrics is very challenging and there is limited technology available on fire retardant silk applications. In this study, two flame retardant monomers having phosphoric groups, phosmer M and phosmer CL, were applied onto silk fabrics by a graft copolymerization technique. The grafted silk fabrics showed a high level of flame retardancy as evaluated by Japanese Industrial Standard micro-burner test method. It was shown that grafting techniques using phosmer CL are more effective than those using phosmer M to enhance the flame retardant functional properties of the silk fabrics. The differential scanning calorimetry, thermogravimetric analysis and thermomechanical analysis showed that the thermal stability of silk fibroin molecules was greatly enhanced by graft copolymerization with the used phosmers. The position of thermal decomposition for silk fabric shifted toward higher temperature after graft copolymerization with phosmer CL and M. Fourier transform infrared spectra showed evidence of the reaction between the used phosmers and silk. However, the surface morphology of silk fiber was very smooth and fine, and the tensile strength was not significantly affected regardless of the graft copolymerization with phosmer M and CL.

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“…[1][2][3] reviewed the various initiation methods employed for graft copolymerization of vinyl monomers onto silk fiber. Many workers [5][6][7] have reported the use of metal acetylacetonate for graft copolymerization of vinyl monomers on silk.…”

Section: Introductionmentioning

confidence: 99%

Photograft copolymerization of methyl methacrylate on silk fiber using titanium(III) chloride-potassium persulphate redox initiator in a limited aqueous system. I

Maji

Banerjee

1999

J. Appl. Polym. Sci.

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Graft copolymerization of methyl methacrylate (MMA) onto mulberry silk fibers has been investigated in a limited aqueous system employing titanium(III) chloride-K 2 S 2 O 8 as the redox initiator under a photoactive condition with visible light. Polymerization in the presence of light at 32 Ϯ 1°C has been found to be more pronounced than in the dark under identical conditions. The percentage of grafting, the percentage of total conversion, and the percentage of grafting efficiency have been studied by varying the reaction time, concentration of monomer, initiator concentration, solvent composition, and pH of the medium. A high percentage of grafting (ϳ 93%), high grafting efficiency (ϳ 97%), and the percentage of total conversion (ϳ 25%) have been obtained with little homopolymer formation. Characterization of the grafted fibers has been investigated by Fourier transform infrared spectroscopy and scanning electron microscopy. Finally, the reaction mechanism has been discussed by considering hydrogen bonding.

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Modification of Tussah Silk by Methyl Methacrylate. Part II

Cited by 11 publications

References 7 publications

Graft copolymerization of methyl methacrylate on silk fiber using Mohr's salt?potassium persulfate as redox initiator under visible light in a limited aqueous medium

Graft copolymerization of methyl methacrylate on silk fiber using Mohr's salt?potassium persulfate as redox initiator under visible light in a limited aqueous medium

Thermal characteristics and physical properties of silk fabrics grafted with phosphorous flame retardant agents

Photograft copolymerization of methyl methacrylate on silk fiber using titanium(III) chloride-potassium persulphate redox initiator in a limited aqueous system. I

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