Preparation and properties of colored waterborne polyurethane modified by dihydroxyl dye

被引：0

作者：

Bao, Yan ^{[1
,2
]}

Han, Pei ^{[1
,2
]}

Liu, Feng ^{[3
]}

Liu, Chao ^{[4
]}

Yan, Hongxia ^{[5
]}

Zhang, Wenbo ^{[4
]}

机构：

[1] College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Shaanxi, Xi'an,710021, China

[2] National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi, Xi'an,710021, China

[3] Hangzhou Palmland Technology Development Co., Ltd., Zhejiang, Hangzhou,311215, China

[4] Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry & Technology, Shaanxi University of Science & Technology, Shaanxi, Xi'an,710021, China

[5] School of Science, Northwestern Polytechnical University, Shaanxi, Xi'an,710129, China

来源：

Jingxi Huagong/Fine Chemicals | 2024年 / 41卷 / 04期

关键词：

Absorption spectroscopy - Binding energy - Blending - Color - Dyes - Emulsification - Fourier transform infrared spectroscopy - Friction - Functional materials - Morphology - Ostwald ripening - Polyurethanes - Tensile strength - Ultraviolet spectroscopy;

D O I：

10.13550/j.jxhg.20230457

中图分类号：

学科分类号：

摘要：

In order to investigate the effects of dihydroxyl dye introduction methods on waterborne polyurethane (WPU) emulsion and its film forming properties, a waterborne polyurethane emulsion was synthesized from isophorone diisocyanate, polytetrahydrofuran (PTMG), 2,2-dimethylolpropionic acid, and 1,4-butanediol (BDO). Colored chemical copolymerized polyurethane (ARWPUA-1~3) emulsions were then prepared using Acid Red 87 instead of BDO as chain extender. Colored chemical copolymerized polyurethane (ARWPUB-1~3) emulsions were prepared with Acid Red 87 as partial substitute for PTMG. WPU/AR was prepared by blending Acid Red 87 with WPU. The samples obtained were characterized by FTIR, 1HNMR and UV-Vis absorption spectroscopy, and further evaluated for analyses on their storage stability, solvent resistance, color fastness to dry/wet friction, and mechanical properties. Molecular dynamics simulation was employed to analyze the binding energy of polyurethane systems. The results indicated that ARWPUA-2 prepared with n(Acid Red 87)∶n(BDO)=1∶4 exhibited excellent storage stability and had no dissolving and decolorization in different solvents with good color fastness to dry/wet friction and high mechanical properties. The tensile strength was 22.6 MPa and the elongation at break was 810%. © 2024 Fine Chemicals. All rights reserved.

引用

页码：840 / 847