Explanation
It refers to a class of macromolecule substances that can be dissolved in water. For example, natural polymer include gelatin, gum arabic, starch and polysaccharide, etc; Semi synthetic macromolecule include cellulose ethers, such as modified derivatives of natural substances such as ethyl cellulose, methyl or thyl cellulose, hydroxyethyl cellulose, starch and gelatin. The synthetic water soluble polymer include polyvinyl alcohol, polyethylene oxide, polyacrylamide, polypropylene acid, polypropylene acid, etc. The water soluble polymer containing ionic groups is called polyelectrolyte. For example, polyethylene sulfonic acid and polyacrylic acid can be made into substitute plasma. polyethylene oxide can be made into water-soluble block or graft copolymer. Applied in the synthesis of neutral detergents and non ionic surfactants. water soluble polymer is widely used in medicine, mineral processing, textile, cosmetics, paper making and sewage treatment, and can be used as thickener, emulsifier, soil conditioner, water soluble adhesive, tackifier of water soluble coatings, additive of cosmetics, fiber modifier, etc. After crosslinking, water-soluble polymers can become hydrogel and ion exchange resin for drug sustained release.
Classification
Organic polymer materials -> Functional polymer materials