Open Access

ARTICLE

Preparation and Characterization of Waterborne Polyurethane with Unique Nanoparticles by Controlling Water

by Xing Zhou^*

Faculty of Printing, Packing Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an, 710048, China

* Corresponding Author: Xing Zhou. Email: Array

Journal of Renewable Materials 2022, 10(6), 1623-1639. https://doi.org/10.32604/jrm.2022.018935

Received 26 August 2021; Accepted 15 October 2021; Issue published 20 January 2022

Abstract

A facile method, focusing on emulsification, chain extension and dispersion process in preparing waterborne polyurethane, was developed to prepare emulsion with rod-like nanoparticles. The facile method involves a water addition procedure by in situ generated water to react with polyurethane prepolymer instead of the external water addition process. As a comparison, waterborne polyurethane was synthesized through the external water addition process. According to the characterization methods including FTIR, ¹H-NMR, TEM and water swelling experiments, it is suggested there are two kinds of hydrogen bonds interactions in hard/soft domain of the novel polyurethane, and the phase separation of hard/soft domains increases significantly. The morphology of the two polyurethanes was quite different (nanorods and spherical particles, respectively), presenting a different surface property. In addition, the water swelling of the novel polyurethane indicates that it holds significant potential application as degradable material.

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