Abstract
The kinetics of thermal degradation process on thermoplastic polyurethanes (TPUs) adhesives with hydrophilic nanosilicas was studied using isothermal thermogravimetric analysis within the temperature range from 360 °C to 460 °C in nitrogen. The effect of nanosilicas with different hydrophilic degree in the thermoplastic polyurethanes was investigated. It was found that the thermoxidative degradation of polyurethane-silica nanocomposites takes place in one step. An analysis of the isothermal methods to evaluate kinetic parameters of decomposition of solids from isothermal thermogravimetric data is presented. Patents WO07146353A2 and US20070292623A1 have some relevant information about the topic develop in this study, because the principle in both cases relies on the interactions between reactive groups in the polymer (TPUs) and the silanol in the silica nano-particles.
Keywords: Kinetic analysis, isothermal degradation, adhesives, hydrophilic nanosilica, polyurethane-silica, nanocomposites, thermogravimetric analysis
Recent Patents on Nanotechnology
Title: Kinetics of Isothermal Degradation Studies in Adhesives by Thermogravimetric Data: Effect of Hydrophilic Nanosilica Fillers on the Thermal Properties of Thermoplastic Polyurethane-Silica Nanocomposites
Volume: 2 Issue: 3
Author(s): Jose Vega-Baudrit, Maria Sibaja-Ballestero, Patricia Vazquez, Santiago Nunez, Jose M. Martin-Martinez and Luis Benavides-Rodriguez
Affiliation:
Keywords: Kinetic analysis, isothermal degradation, adhesives, hydrophilic nanosilica, polyurethane-silica, nanocomposites, thermogravimetric analysis
Abstract: The kinetics of thermal degradation process on thermoplastic polyurethanes (TPUs) adhesives with hydrophilic nanosilicas was studied using isothermal thermogravimetric analysis within the temperature range from 360 °C to 460 °C in nitrogen. The effect of nanosilicas with different hydrophilic degree in the thermoplastic polyurethanes was investigated. It was found that the thermoxidative degradation of polyurethane-silica nanocomposites takes place in one step. An analysis of the isothermal methods to evaluate kinetic parameters of decomposition of solids from isothermal thermogravimetric data is presented. Patents WO07146353A2 and US20070292623A1 have some relevant information about the topic develop in this study, because the principle in both cases relies on the interactions between reactive groups in the polymer (TPUs) and the silanol in the silica nano-particles.
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Vega-Baudrit Jose, Sibaja-Ballestero Maria, Vazquez Patricia, Nunez Santiago, Martin-Martinez M. Jose and Benavides-Rodriguez Luis, Kinetics of Isothermal Degradation Studies in Adhesives by Thermogravimetric Data: Effect of Hydrophilic Nanosilica Fillers on the Thermal Properties of Thermoplastic Polyurethane-Silica Nanocomposites, Recent Patents on Nanotechnology 2008; 2 (3) . https://dx.doi.org/10.2174/187221008786369679
DOI https://dx.doi.org/10.2174/187221008786369679 |
Print ISSN 1872-2105 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-4020 |
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