Novel hyperbranched waterborne polyurethane-urea/silica hybrid coatings and their characterizations

被引：42
|
作者：
Jena, Kishore K. [1 ]
Sahoo, Sambita [2 ]
Narayan, Ramanuj [1 ]
Aminabhavi, Tejraj M. [3 ]
Raju, K. V. S. N. [1 ]
机构：
[1] Indian Inst Chem Technol, Organ Coatings & Polymers Div, Hyderabad 500607, Andhra Pradesh, India
[2] Inst Minerals & Mat Technol, Adv Mat Technol Dept, Bhubaneswar 751013, Orissa, India
[3] Soniya Educ Trusts Coll Pharm, Dharwad 580002, Karnataka, India
来源：
POLYMER INTERNATIONAL | 2011年 / 60卷 / 10期
关键词：
hyperbranched polyesters; polyurethane; APTES; thermal properties; THERMOMECHANICAL PROPERTIES; DISPERSIONS; NANOCOMPOSITES; POLYMER;
D O I：
10.1002/pi.3109
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Thermally resistant and mechanically stable novel hyperbranched waterborne polyurethane-urea/silica hybrid coatings were prepared by using 3-aminopropyltriethoxysilane as a coupling agent with SiO2 as a crosslinker. The extent of hydrogen bonding was investigated to show a dependence on SiO2 concentration, which increased the glass transition temperature of the polymers with increasing SiO2 concentration. Thermal decomposition profiles and the corresponding stability data suggest two-step decomposition for the hybrids; further, their stability increased with increasing concentration of SiO2. (C) 2011 Society of Chemical Industry
引用
收藏
页码：1504 / 1513
页数：10
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