Kinetic studies of CuBr-PMDETA catalyzed 1,3-dipolar cycloaddition polymerization

被引：1
作者：
Liu, Rongpeng [1 ]
Zhang, Bing [1 ]
Wan, Liqiang [1 ]
Huang, Farong [1 ]
Du, Lei [1 ]
机构：
[1] E China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tec, Minist Educ, Shanghai 200237, Peoples R China
来源：
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY | 2016年 / 53卷 / 06期
关键词：
Click reaction; kinetics; apparent activation energy; step-growth polymerization; CLICK CHEMISTRY; ADHESIVE POLYMERS; DIAZIDE; LIGANDS; AZIDES;
D O I：
10.1080/10601325.2016.1166003
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The kinetics for the reaction of diazide (4,4'-biphenyl dibenzyl azide) and diyne (dipropargyl bisphenol A) catalyzed by CuBr-PMDETA (N, N, N', N '', N ''-pentamethyldiethylenetriamine) was studied in this paper by means of nuclear magnetic resonance spectra (H-1-NMR) and differential scanning calorimetry (DSC). H-1-NMR was carried out to analyze solution polymerizations under different CuBr-PMDETA ratios in DMSO-d(6). The results showed that CuBr-PMDETA catalytic system was easy to be oxidation under ambient condition. However, different CuBr-PMDETA ratios influenced the catalytic efficiency and the optimal ratios were found in nitrogen gas. DSC was carried out to analyze bulk polymerizations. The results showed that the apparent activation energy (E-alpha) calculated by Kissinger's method was 69.2 kJ/mol, which was confirmed by Friedman's method. The two tests indicated that the catalyzed polymerization of diazide and diyne was a second order reaction.
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页码：368 / 373
页数：6
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