Method of oreparing starch grafting type high water absorption resin by wave polymerization

Abstract

A process for preparing starch grafted high-hydroscopicity resin in liquid phase system by wave polymerizing method includes mixing starch with water, water-bath heating while gelatinizing, neutralizing acrylic acid by sodium hydroxide, mixing it with the gelatinized starch, adding acrylamide, maleic acid, trigger, cross-linking agent, and additive, stirring, loading the mixture in cylindrical reactor, heating to trigger reaction, removing heat source, and polymerizing reaction by automatic transfer of heat waves.

Description

technical field

[0001] The invention belongs to the technical field of resin preparation, and in particular provides a method for preparing starch-grafted superabsorbent resin by wave polymerization. The prepared resin has biodegradability and can be used to produce sanitary napkins, paper diapers and agricultural soil conditioners, etc. . Background technique

[0002] Water-absorbent resins are widely used in personal hygiene products, soil water-retaining agents, dehydrating agents, sludge coagulants, thickeners, anti-coagulation agents, and release control agents for various chemicals. The raw materials used in the preparation of water-absorbent resins are usually ethylenically unsaturated monomers with hydrophilic groups, such as acrylic acid, acrylamide and the like. Grafting and modifying starch with vinyl monomers to prepare water-absorbent resins can not only reduce the dependence on petroleum products and reduce the cost of raw materials, but also make the prepared...