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Physical and Chemical Properties of Polyacrylamide
Jan 08, 2018

   Polyacrylamide is a water-soluble linear polymer synthesized by radical polymerization of acrylamide (AM) monomer. It has good flocculation and can reduce the frictional resistance between liquids. According to the characteristics of ions, it can be divided into Non-ionic, anionic, cationic and amphoteric four types. Polyacrylamide (PAM) is insoluble in most organic solvents such as methanol, ethanol, acetone, ethyl ether, aliphatic and aromatic hydrocarbons except for a few polar organic solvents such as acetic acid, acrylic acid, chloroacetic acid, ethylene glycol, Urea and formamide are melted. However, the solubility of these organic solvents is limited, often require heating, otherwise not much application value.

   At appropriate low concentrations, polyacrylamide solution can be considered as a network structure, the inter-chain mechanical tangles and hydrogen bonds together form a network node; higher concentrations, the solution contains many chain-link contacts, making PAM The solution is gel-like. PAM aqueous solution with many water-miscible organic matter has good compatibility, good compatibility of electrolytes, chloride, amine, calcium sulfate, potassium hydroxide, sodium carbonate, sodium borate, nitric acid Sodium, sodium phosphate, sodium sulfate, zinc chloride, boric acid and phosphoric acid and other substances are not sensitive.

   Number of polyacrylamide mesh: mesh refers to the size or thickness of the material, the mesh is the number of squares per unit area.General definition refers to the number of mesh in the area of 1 inch * 1 inches, the sieve The number of mesh network. Such as 600 mesh per square inch has 600 square mesh, polyacrylamide mesh 20 mesh ~ 80 mesh, which is between 0.85mm ~ 0.2mm, which is the size of granular polyacrylamide powder, powder The size of the polyacrylamide mesh size can be controlled at about 100 mesh, the greater the number of polyacrylamide more easily dissolved, the size of the polyacrylamide mesh alone can not measure the quality of the product!