Abstract
Intumescent flame retardant and hydrophobic coatings, consisting of sodium montmorillonite (MMT), ammonium dihydrogen phosphate (ADP), and methyltrimethoxysilane (MTMS), were prepared via in situ sol-gel and self-assembly techniques to acquire multifunctional cotton fabrics. The impact of MTMS concentration on hydrophobicity, fire resistance, thermal stability, and heat release behavior of the coated fabrics was investigated. A Si-O-Si network structure was generated via the hydrolysis-condensation reaction of MTMS, induced by the catalysis of ADP. After treated by the coating with 2.0 wt.% of MTMS, the cotton fabric with a total uptake of 22.7 wt.% achieved appreciable flame retardancy and hydrophobicity, as well as satisfactory thermal stability and heat release behaviors. Overall, this research provides a facile and effective approach to prepare flame retardant and hydrophobic cotton fabrics.
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Acknowledgements
This research is sponsored by the National Science Foundation (CMMI-1562907). D.Z. acknowledges the China Scholarship Council for offering him a scholarship (no. 1412080020) to conduct research at University of Connecticut. B.L.W. acknowledges the Giolas-Harriott Fellowship and the National Science Foundation Louis Stokes Alliance for Minority Participation (LSAMP) Bridge to the Doctorate Fellowship.
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Zhang, D., Williams, B.L., Becher, E.M. et al. Flame retardant and hydrophobic cotton fabrics from intumescent coatings. Adv Compos Hybrid Mater 1, 177–184 (2018). https://doi.org/10.1007/s42114-017-0006-1
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DOI: https://doi.org/10.1007/s42114-017-0006-1