Synthesis and characterization of waterborne polyurethane thickeners based on hyperbranched polyester

被引：8
|
作者：
Xie, Andong [1 ]
Chen, Hongxiang [1 ]
Xu, Caixia [1 ]
Chen, Hailun [1 ]
Zhou, Yu [1 ]
Lin, Yinli [1 ]
Yang, Minghua [2 ]
机构：
[1] Wuhan Univ Sci & Technol, Coll Chem Engn & Technol, Hubei Key Lab Coal Convers & New Carbon Mat, Wuhan 430081, Peoples R China
[2] Lishui Univ, Coll Sci, Lishui 323000, Zhejiang, Peoples R China
来源：
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | 2015年 / 12卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Hyperbranched polyurethane; Associative thickener; Synthesis; Characterization; MOLECULAR-WEIGHT; POLYPHENYLENE; PERFORMANCE; COATINGS; POLYMERS; BLENDS; LENGTH;
D O I：
10.1007/s11998-014-9636-1
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Octahydroxyl-terminated and hexadecahydroxyl-terminated hyperbranched polyesters (HPE-8 and HPE-16) were synthesized from 2,2-dimethylol propionic acid and 1,4-butanediol. The hyperbranched waterborne polyurethane (HWPU) thickeners containing different branching structure and length of hydrophilic chain were prepared with hexamethylene diisocyanate, polyethylene glycol (PEG), cetyl alcohol, and HPE. The structures of HPE and HWPU were characterized by Fourier transform infrared spectra and nuclear magnetic resonance (H-1 NMR and C-13 NMR). The rheological properties of polyurethane emulsion thickened by HWPU were measured using Brookfield LVDV-III rheometer, and the effects of HPE structure and PEG molecular weight on the thickening property of HWPU were studied. The results showed that HWPU with HPE branching number of 8 and PEG molecular weight of 4000 exhibited an excellent thickening effect in the aqueous polyurethane emulsion.
引用
收藏
页码：325 / 332
页数：8
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