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Effect of cosolvent NMP on properties of cationic fluorocarbon emulsifier-free emulsion

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Abstract

Cationic fluorocarbon emulsifier-free emulsion was prepared via a novel method of adding organic cosolvent N-methylpyrrolidone (NMP), which was characteristic of the reaction transferring from solution to emulsion polymerization system. The emulsion stability was analyzed by the coagulation and precipitation ratio. The properties of particles were characterized by dynamic laser light scattering, surface potential particle size analyzer, and transmission electron microscopy, respectively. The latex film surface properties and immersion behaviors were investigated by contact angles. The results showed that, with NMP increasing from 5 to 30 %, the emulsion stability became better. Also, particle sizes decreased from 264.0 to 95.5 nm, and their distribution transformed from multidispersion to monodispersion. Zeta potentials increased gently. Meanwhile, the latex film surface performance was slightly improved, and the more the content of NMP, the less the influence of the cure temperature on surface property. There was less mobility of fluorinated groups in the films with more NMP used.

A novel method was to prepare cationic fluorocarbon emulsifier-free emulsion. It was characteristic of the reaction transferred from solution to emulsion reactive polymerization system, of which the cosolvent NMP was used in the first step of the reaction. Its influences on particle properties were obvious. With NMP increasing, the particle sizes decreased, their distribution transformed from multidispersion to monodispersion, and the D decreased from 3.88 to 1.09. Their impact on particle properties also affected latex film surface properties and immersion behaviors.

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Acknowledgments

We would like to express our great thanks to the National Natural Science Foundation of China (grant number 50973057) and Scientific Research Fund of Shaanxi University of Science and Technology (BJ11-10) for financial support.

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Authors and Affiliations

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

    Chen Wang, Xiaorui Li & Peizhi Li

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  1. Chen Wang
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  2. Xiaorui Li
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  3. Peizhi Li
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Correspondence to Chen Wang.

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Wang, C., Li, X. & Li, P. Effect of cosolvent NMP on properties of cationic fluorocarbon emulsifier-free emulsion. Colloid Polym Sci 291, 1271–1278 (2013). https://doi.org/10.1007/s00396-012-2846-0

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  • DOI: https://doi.org/10.1007/s00396-012-2846-0

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