Rapid Hyperbranched Polythioether Synthesis Through Thiol-Michael Addition Reaction

被引：18
作者：
Daglar, Ozgun [1 ]
Gungor, Begum [1 ]
Guric, Gulce [1 ]
Gunay, Ufuk Saim [1 ]
Hizal, Gurkan [1 ]
Tunca, Umit [1 ]
Durmaz, Hakan [1 ]
机构：
[1] Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkey
来源：
JOURNAL OF POLYMER SCIENCE | 2020年 / 58卷 / 06期
关键词：
hyperbranched polymer; hyperbranched; organocatalyst; polythioether; polysulfides; step-growth polymerization; thiol-Michael; AB(2) MONOMERS; TRANSFER POLYMERIZATION; POLYMERS; CLICK; CHEMISTRY;
D O I：
10.1002/pol.20190279
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this study, two types of hyperbranched (HB) polythioether could readily be achieved in a short time at ambient temperature through a thiol-Michael addition reaction. Dimethyl acetylenedicarboxylate (DMADC) or methyl propiolate (A(2)) and trimethylolpropane tris(3-mercaptopropionate) (B-3) monomers were reacted using an organobase 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as a catalyst in chloroform at room temperature to provide subsequent HB polythioethers. The effect of TBD concentration on the polymerization was studied for the DMDAC case monitoring the molecular weight evolution against time. HB polythioethers were characterized using spectroscopic (nuclear magnetic resonance) and chromatographic (gel permeation chromatography with refractive index and light-scattering detectors) techniques. (c) 2020 Wiley Periodicals, Inc. J. Polym. Sci. 2020, 58, 824-830
引用
收藏
页码：824 / 830
页数：7
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