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

页码：1504 / 1513

页数：10

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