Preparation method of hydrolyzed polyacrylamide

[Preparation method] After polymerization of acrylamide monomer, adding alkali hydrolysis is a traditional process for producing hydrolyzed polyacrylamide.

The specific process is to add 0.

The following issues should be paid attention to during the preparation of hydrolyzed polyacrylamide

(1) Initiator According to the law of free radical reaction, monomer bond breaking polymerization exotherms the temperature of the reaction system to increase the temperature of the reaction system, thereby accelerating the rate at which the initiator generates free radicals, and the polymerization reaction speed increases accordingly

(2) Chain transfer agent Since the relative molecular weight of hydrolyzed polyacrylamide and the solubility are contradictory, in order to prevent the cross-linking between polymer molecules and improve the solubility of the polymer, some chain transfer agents are usually added (Such as isopropanol , sodium formate, etc.

(3) Polymerization temperature Ju Naishuang and Zeng Wenjiang studied the effect of polymerization temperature on the relative molecular weight of hydrolyzed polyacrylamide.

Related link: Acrylamide-methyl methacrylate-acrylic acid terpolymer