Method for preparing Ca<2+> ion adsorption resin through one-pot oxidation, alkali gelatinization and graft polymerization by taking potato starch as raw material

Method for preparing Ca<2+> ion adsorption resin through one-pot oxidation, alkali gelatinization and graft polymerization by taking potato starch as raw material

  • CN 106,008,824 A
  • Filed: 06/28/2016
  • Published: 10/12/2016
  • Est. Priority Date: 06/28/2016
  • Status: Active Application
First Claim
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1. with potato starch be raw material oxidation, alkali gelatinizing and glycerol polymerization one kettle way preparation absorption Ca2+The method of ion exchange resin,It is characterized in that its method and step are:

  • (1). potato starch is mixed by the mass ratio of 1;

    5 with deionized water, adds potato starch quality 0.888 timesThe hydrogen peroxide of 30% and aoxidize 1.5h under the conditions of 50 DEG C;

    The hydrogen of potato starch quality 0.25 times is weighed after oxidationSodium oxide, and with the water dissolution of sodium hydroxide quality 4 times, under stirring, the sodium hydroxide solution prepared is added drop-wise to above-mentioned oxidationIn potato starch solution;

    Weigh the acrylic acid of potato starch quality 7 times, weigh the hydroxide of acrylic acid quality 0.333 timesSodium, and with the deionized water dissolving sodium hydroxide of sodium hydroxide quality 2.5 times, molten with above-mentioned sodium hydroxide under ice-water bath cools downLiquid prepares acrylic acid and sodium salt solution thereof with acrylic acid;

    (2). by the potato starch after above-mentioned alkali oxide gelatinizing with neutralize after acrylic acid and sodium salt solution be sufficiently mixed, addEntering N, the N '

    -methylene-bisacrylamide containing potato starch quality 0.0050 times and make cross-linking agent, stirring is allowed to uniform, is passed throughNitrogen, is slowly heated, and makes temperature of reaction system be stepped up, and after beginning to be polymerized, stops stirring, continues to be slowly heated, 90At DEG C be incubated 2h, drying, pulverizes i.e. obtain adsorb Ca2+Ion exchange resin.

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