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Role of pretreatment with potassium permanganate and urea on mechanical and degradable properties of photocured coir (Cocos nucifera) fiber with 1,6-hexanediol diacrylate

Authors

  • Mubarak A. Khan,

    Corresponding author
    1. Radiation and Polymer Chemistry Laboratory, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, P.O. Box 3787, Dhaka 1000, Bangladesh
    • Radiation and Polymer Chemistry Laboratory, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, P.O. Box 3787, Dhaka 1000, Bangladesh
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  • M. Masudul Hassan,

    1. Department of Chemistry, MC College of National University, Sylhet 3100, Bangladesh
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  • Rownak Taslima,

    1. Department of Applied Chemistry and Chemical Technology, University of Dhaka, Dhaka 1000, Bangladesh
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  • A. I. Mustafa

    1. Department of Applied Chemistry and Chemical Technology, University of Dhaka, Dhaka 1000, Bangladesh
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Abstract

Coir fibers were modified with 1,6-hexanediol diacrylate (HDDA) using ultraviolet (UV) radiation. Concentration of HDDA, soaking time, and radiation dose were optimized and found to be 30% HDDA in methanol along with photoinitiator Irgacure-500 (2%) and 120 min of soaking time registered as the better performance (polymer loading (PL) 7%, tensile strength factor, Tf = 1.50). Urea of different concentrations (0.5–2%) were incorporated with 30% HDDA to monitor its effect on the properties and 1% urea produced the best results (PL = 25%, Tf = 1.82). For the improvement of the properties, the fibers were subjected to surface treatment with potassium permanganate (KMnO4) of different concentrations at various treating times. Enhanced properties (PL = 86%. Tf = 4.42) of the fibers treated with KMnO4 (0.05%) were obtained. The KMnO4 treated fibers were again treated with HDDA (30%) solution along with urea (1%) and found to produce the best results (PL = 100%, Tf = 4.5). Water uptake and degradable properties of the treated and virgin fibers were obtained. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4361–4368, 2006

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