Get access

Hyperdeproteinized natural rubber prepared with urea

Authors

  • Warunee Klinklai,

    1. Department of Chemistry, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
    Search for more papers by this author
  • Takayuki Saito,

    1. Department of Chemistry, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
    Search for more papers by this author
  • Seiichi Kawahara,

    Corresponding author
    1. Department of Chemistry, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
    • Department of Chemistry, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
    Search for more papers by this author
  • Kei Tashiro,

    1. Organic Material Department, Material Engineering Division II, Toyota Motor Corporation, Toyota, Aichi, 471-8572, Japan
    Search for more papers by this author
  • Yasuyuki Suzuki,

    1. Organic Material Department, Material Engineering Division II, Toyota Motor Corporation, Toyota, Aichi, 471-8572, Japan
    Search for more papers by this author
  • Jitladda Tangpakdee Sakdapipanich,

    1. Department of Chemistry, Faculty of Science, Mahidol University, Rama VI, Bangkok 10400, Thailand
    2. Institute of Science and Technology for Research and Development, Mahidol University, Salaya Campus, Nakomprathom 73170, Thailand
    Search for more papers by this author
  • Yoshinobu Isono

    1. Department of Chemistry, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
    Search for more papers by this author

Abstract

Preparation of hyperdeproteinized natural rubber was made from fresh latex and preserved high-ammonia latex by treatment with urea in the presence of sodium dodecyl sulfate. Concentration of urea, temperature, and time for the incubation were investigated to remove the proteins effectively. Under the best conditions, the total nitrogen content and amount of allergenic proteins for the deproteinized rubbers were 0.005 wt % and 1.0 μg/ml, respectively, which were less than those of natural rubber deproteinized with proteolytic enzyme. The hyper-deproteinized natural rubber was proved through FT IR spectroscopy. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 555–559, 2004

Get access to the full text of this article

Ancillary