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Synthesis and properties of cationic polyurethane-fluorinated acrylic hybrid latexes by emulsifier-free emulsion polymerization and the solvent-free method

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Abstract

A series of cationic polyurethane-fluorinated acrylic hybrid latex (PUFA) have been synthesized by solvent-free method. In the method, vinyl monomers acted as dilution agent and the polyurethane (PU) having quaternary ammonium groups acted as macromolecular emulsifier without using any other solvent and surfactant. The structure and properties of PUFA were characterized by Fourier transform infrared spectroscopy (FT-IR), F19 nuclear magnetic resonance (F19 NMR), particle size distribution (PSD) analysis, transmission electron microscopy (TEM), contact angle (CA), surface free energy analysis, scanning electron microscope (SEM) equipped with energy dispersive X-ray spectrometry (EDS), and thermogravimetric (TG) analysis. The FT-IR, F19 NMR, and EDS confirmed that the FA monomer had been introduced into the chain of the PUFA hybrid polymer. The PSD analysis indicated the particles of PUFA were smaller than corresponding pure PU dispersion and narrower in particle size distribution. The CA and surface free energy analysis proved the PUFA hybrid latex film with fluorine possessed higher contact angle and lower surface free energy in contrast with the film without fluorine. The FPUA films exhibited good surface property which could be enhanced at higher annealing temperature. The EDS of PUFA confirmed the fluorine enrichment on the surface of PUFA. TG analysis suggested the PUFA hybrid latex film had a better thermal stability than pure PU.

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Acknowledgments

We would like to express our great thanks to the National Natural Science Foundation of China (grant number: 20876093), the Research Fund of Education Department of Shaanxi Provincial Government (grant number: 11JK0600), and the Natural Science Foundation of Shaanxi University of Science & Technology (grant number: ZX10-12) for financial support.

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  1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi’an, 710021, China

    Hua Xin, Yi-Ding Shen & Xiao-Rui Li

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  1. Hua Xin
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  2. Yi-Ding Shen
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  3. Xiao-Rui Li
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Correspondence to Hua Xin.

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Xin, H., Shen, YD. & Li, XR. Synthesis and properties of cationic polyurethane-fluorinated acrylic hybrid latexes by emulsifier-free emulsion polymerization and the solvent-free method. Polym. Bull. 67, 1849–1863 (2011). https://doi.org/10.1007/s00289-011-0523-y

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  • DOI: https://doi.org/10.1007/s00289-011-0523-y

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