陕西科技大学学报（自然科学版）2008，Vol.26Issue(2)：29-33,5.
脂肪族超支化聚酯的合成与性能研究
STUDY ON SYNTHESIS AND PROPERTIES OF HYPERBRANCHED ALIPHATIC POLYESTER
肖文清 1程万里 1胡剑青 1涂伟萍1
作者信息
- 1. 华南理工大学化工与能源学院,广东,广州,510640
- 折叠
摘要
Abstract
The different generation hyperbranched aliphatic polyesters were synthesized based upon 2,2-Bis(methylol)propionic acid as a AB2 monomer, and Neopentyl glycol as a core molecule through one step polymerization process. The structure and properties of the product were characterized by FTIR, 1H NMR, GPC and TGA. It was shown that the third generation hyperbranched polyester has narrow molecular weight distribution with Mw=2 615 g/mol, Mn=1 536 g/mol, PDI=1.41 by GPC. The degree of branching, as determined by quantitative 1H NMR spectroscopy, was found to be 0.49. TGA analysis showed that the polymer exhibited high thermal stability, the decomposition temperature is more than 300 ℃. The conversion of carboxyl groups of the third generation hyperbranched polyeste was discussed. Because the water which is produced in this reaction could't be emitted totally, as a result, the final carboxyl groups conversation rate still could't get to 100% .关键词
超支化聚酯/熔融缩聚/合成/动力学Key words
hyperbranched polyesters/melt polycondensation/synthesis/kinetics分类
化学化工引用本文复制引用
肖文清,程万里,胡剑青,涂伟萍..脂肪族超支化聚酯的合成与性能研究[J].陕西科技大学学报（自然科学版）,2008,26(2):29-33,5.
