Effects of Concentration of (3-Aminopropyl) Triethoxysilane on Waterborne Polyurethane

• Published in: 东华大学学报（英文版） Vol. 39; no. 3; pp. 231 - 238
• Main Authors: GUO Hengyi, LIU Yan, PENG Xiaoxiao, YU Yunge, XIN Binjie
• Format: Journal Article
• Language: English
• Published: School of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China%School of Textiles and Fashion,Shanghai University of Engineering Science,Shanghai 201620,China 30.06.2022
• Subjects: ( 3-aminopropyl) trirthoxysilane ( APTES); modified; agglomeration; water resistant; waterborne polyurethanes
• ISSN: 1672-5220
• DOI: 10.19884/j.1672-5220.202105015

TQ323.8; As a coupling agent, ( 3-aminopropyl ) triethoxysilane (APTES) was used to synthesize a series of silanized waterborne polyurethanes (Si-WPUs) through the acetone process. The Fourier transform infrared spectroscopy (FTIR) together with the X-ray photoelectron spectroscopy (XPS) was utilized to measure both elements and structures of these samples. The scanning electron microscope (SEM) results explained that APTES would be agglomerate on the surface of WPU films when the mass fraction of the agent concentration was more than 8％. Besides, the contact angle of water ( CAW) can be improved from 56.5° to 90.0° by adjusting APTES concentration in Si-WPU. The decomposition temperature of films was also improved with the increase of APTES, and a significant increase could be seen in the glass temperature from 51.00 ℃ to 85.74 ℃.