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Grafting onto wool

12. Graft copolymerization of ethyl acrylate onto reduced wool by use of ceric sulfate as redox initiator

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Summary

In order to ascertain the role of -SH groups in graft copolymerization of vinyl monomers onto Himachali wool fiber, an attempt has been made to graft copolymerize ethylacrylate (EA) onto reduced wool, in the presence of cerie sulfate (CS) as redox initiator in aqueous medium. Reduction of wool was carried out with thioglycolic acid (TGA) in aqueous solution. Percentage of grafting and percent efficiency were determined as functions of (a) Concentration of initiator (CS), (b) Concentration of monomer (EA), (c) Concentration of Sulfuric acid, (d) Time and (e) Temperature. Reduction of wool does not promote grafting of EA. The unreduced wool during ceric ion-initiated grafting of EA was reported earlier from this laboratory to produce more grafting. In ceric ion-initiated grafting of vinyl monomer onto wool, -SH groups do not play significant role. A plausible mechanism of grafting of EA onto reduced wool in the presence of ceric ion initiator has been suggested.

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Authors and Affiliations

  1. Chemistry Department, Himachal Pradesh University, 171005, Simla, India

    B. N. Misra, I. K. Mehta & R. K. Sharma

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  1. B. N. Misra
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  2. I. K. Mehta
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  3. R. K. Sharma
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Misra, B.N., Mehta, I.K. & Sharma, R.K. Grafting onto wool. Polymer Bulletin 3, 115–121 (1980). https://doi.org/10.1007/BF00263214

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  • DOI: https://doi.org/10.1007/BF00263214

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