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Synthesis and characterization of (poly (N-vinyl formamide)—pregelled starch—graft copolymer

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Abstract

Bromate / cyclohexanone redox system was investigated as a novel initiator for graft copolymerization of N-vinyl formamide onto pregelled starch. A number of variables in the grafting reaction were investigated including N-vinyl formamide, cyclohexanone, bromate ion, sulphuric acid and pregelled starch concentrations, material to liquor ratio along with polymerization time and temperature. The graft copolymers were evaluated in terms of graft yield, graft reaction efficiency and homopolymer formation (%). The optimum conditions for grafting of N-vinyl formamide onto pregelled starch are: N-vinyl formamide 50% based on weight of substrate, cyclohexanone 15 mmol / l, bromate ion, 30 mmol / l, liquor ratio 10, pH 6, time 120 min., and temperature 40°C. On the other hand, characterizations of the resultant copolymers with respect to swelling capacity, solubility %, metal ion up-take and suitability as a sizing agent for cotton textiles were investigated. The results obtained reflect that, the resultant copolymer shows better results for the aforementioned properties in comparison with that obtained from native pregelled starch as a starting substrate.

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Acknowledgement

The authors are thankful to Sabic Company, Kingdom of Saudi Arabia for its financial support of this work.

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Authors and Affiliations

  1. Textile Department, National Institute for Standards (NIS), El-Haram, El-Giza, Egypt

    Khaled M. Mostafa

  2. Faculty of Science, Chemistry Department, King Abdul Aziz University, Jeddah, Saudi Arabia

    Abdul Rahim Samarkandy

  3. Polymers and Pigment Department, National Research Center, Dokki, Cairo, Egypt

    Azza A. El-Sanabary

Authors
  1. Khaled M. Mostafa
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  2. Abdul Rahim Samarkandy
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  3. Azza A. El-Sanabary
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Correspondence to Khaled M. Mostafa.

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Mostafa, K.M., Samarkandy, A.R. & El-Sanabary, A.A. Synthesis and characterization of (poly (N-vinyl formamide)—pregelled starch—graft copolymer. J Polym Res 17, 789–800 (2010). https://doi.org/10.1007/s10965-009-9370-z

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  • DOI: https://doi.org/10.1007/s10965-009-9370-z

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