Starch graft polymers. I. Graft Co- and terpolymers of starch with 2-hydroxy-3-methacryloyloxypropyl-trimethylammonium chloride and acrylamide: Preparation and evaluation as silica depressants
✍ Scribed by Duane A. Jones; Wesley A. Jordan
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 463 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
The title monomers have been grafted onto wheat starch by 7-radiation-induced polymerizations in water providing three graft polymers containing poly[2-hydroxy-3methacryloyloxypropyltrimethylammonium chloride (I)] and two graft polymera containing poly(1 and acrylamide (II)] . Characterization is discussed together with their utility as silica depressants in flotation-beneficiation of siliceous ores. Results are provided to illustrate that a starch graft copolymer containing 1570 poly(1) graft and a graft terpolymer containing 30Y0 poly(1, 11) in the ratio I : 2 are effective as selective depressants for silica in flotation-beneficiatioii of Florida pebble phosphate ore using special flotation conditions.