In Situ Incorporation of Diamino Silane Group into Waterborne Polyurethane for Enhancing Surface Hydrophobicity of Coating

Jinghui Lyu; Kaiyue Xu; Ning Zhang; Chunshan Lu; Qunfeng Zhang; Lu Yu; Feng Feng; Xiaonian Li

doi:10.3390/molecules24091667

In Situ Incorporation of Diamino Silane Group into Waterborne Polyurethane for Enhancing Surface Hydrophobicity of Coating

Molecules. 2019 Apr 28;24(9):1667. doi: 10.3390/molecules24091667.

Authors

Jinghui Lyu¹, Kaiyue Xu², Ning Zhang³, Chunshan Lu⁴, Qunfeng Zhang⁵, Lu Yu⁶, Feng Feng⁷, Xiaonian Li⁸

Affiliations

¹ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. lyujh@zjut.edu.cn.
² State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. 13386529829@163.com.
³ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. 19857106774@163.com.
⁴ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. lcszjcn@zjut.edu.cn.
⁵ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. Zhangqf@zjut.edu.cn.
⁶ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. yuluuni2014@gmail.com.
⁷ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. ffeng@zjut.edu.cn.
⁸ State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. xnli@zjut.edu.cn.

Abstract

A series of waterborne polyurethanes (WPU) with crosslinked siloxane were obtained through introducing 3-(2-aminoethylamino)propyldimethoxymethylsilane (APTS) into WPU by in situ polymerization. The properties of WPU modified by APTS were studied through a variety of experimental methods. The water contact angle of the WPU coating surface increased from 64° to 86°, and the water resistance reduced to 3.90% when 3 wt% APTS was added, which improved the coating surface hydrophobicity. Firstly, Fourier transform infrared (FT-IR) and ¹H-NMR spectra demonstrated the successful incorporation of APTS to polyurethanes and completed the hydrolytic condensation reaction-generated Si-O-Si crosslinking structure. Furthermore, the surface energy of the membrane was reduced when the crosslinking structure migrated and enriched on the surface of film. Besides, the crosslinking structure was abundant, and the distribution of siloxane in WPU was more uniform.

Keywords: APTS; cross-linked siloxane; waterborne polyurethane.

MeSH terms

Coated Materials, Biocompatible / chemistry*
Emulsions
Hydrophobic and Hydrophilic Interactions*
Magnetic Resonance Spectroscopy
Molecular Weight
Particle Size
Polyurethanes / chemical synthesis
Polyurethanes / chemistry*
Spectroscopy, Fourier Transform Infrared
Thermogravimetry

Substances

Coated Materials, Biocompatible
Emulsions
Polyurethanes

Abstract

MeSH terms

Substances

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