Features of the acid-catalyzed hydrolysis of mono- and poly(ethylene glycol) methacrylates

被引：8
作者：
Orekhov, Dmitry V. [1 ]
Kazantsev, Oleg A. [1 ]
Sivokhin, Alexey P. [1 ]
Savinova, Maria V. [1 ]
机构：
[1] Nizhnii Novgorod State Tech Univ, 24 Minin St, Nizhnii Novgorod 603950, Russia
来源：
EUROPEAN POLYMER JOURNAL | 2018年 / 100卷
关键词：
Poly(ethylene glycol) methacrylates; 2-Hydroxyethyl methacrylate; Acid-catalyzed hydrolysis; Sulfuric acid; 2-Acrylamido-2-methylpropanesulfonic acid; Methacrylic acid; Kinetics; Concentration effect; Structure of a solution; AQUEOUS-SOLUTIONS; NUCLEOPHILIC REACTIONS; TERTIARY-AMINES; WATER; SOLVENTS; CONCRETE; OXIDE); SUPERPLASTICIZER; ALKYLATION; HYDROGELS;
D O I：
10.1016/j.eurpolymj.2018.01.010
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Hydrolysis of water-soluble industrially important mono- and poly(ethylene glycol) methacrylates catalyzed by sulfuric acid and organic monomeric acids (methacrylic and 2-acrylamido-2-methylpropanesulfonic acid) has been studied in aqueous solutions. Chemical stability of the methacrylates in dilute solutions was found to be independent of the length of ethoxylated fragments. Structurization of the studied solutions and the increase in concentration of hydrogen ions in concentrated solutions of the ethoxylated esters were shown to be the reason for the revealed unusual influence of the initial monomer concentration on the hydrolysis rate. The pronounced self-acceleration effect was observed for the methacrylic acid catalyzed reaction with increase in conversion.
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页码：18 / 24
页数：7
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