Abstract
Due to their flame retardant behavior, phosphorylated cellulosic fibers could be interesting candidates for use in the composite material field. However, because of the phosphate groups, the fiber network is highly charged and hydrophilic reducing its compatibility towards synthetic resins. An effective hydrophobization method for phosphorylated cellulosic fibers was therefore developed in order to enhance their hydrophobic behavior. The best results were obtained with a straightforward addition of tosylated fatty alcohols. The influence of the carbon chain length on the reaction efficiency, the thermal degradation and the hydrophobic behavior are reported. The success of the alkylation reaction was confirmed by FTIR analyses and the degree of substitution by elemental analysis. Contact angle with water of more than 100° were obtained after alkylation. The cellulosic samples were furthermore characterized by means of SEM, fiber length distribution, NMR spectroscopy and thermo gravimetric analysis.
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Abbreviations
- FTIR:
-
Fourier transform infrared spectroscopy
- NMR:
-
Nuclear magnetic resonance
- PMEs:
-
Phosphate mono esters
- KF:
-
Kraft fibers
- TBA:
-
Tributylamine
- FQA:
-
Fiber Quality Analyzer
- %P:
-
Phosphorus content
- AGU:
-
Anhydrous Glucose Unit
- DSp:
-
Degree of substitution
- %C:
-
Carbon content
- TGA:
-
Thermo gravimetric analysis
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The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.
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The Natural Sciences and Engineering Research Council of Canada (NSERC), Fonds de Recherche du Québec en Nature et Technologies (FRQNT).
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Guillaume Nourry and Dan Belosinschi authors are contributed equally.
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Nourry, G., Belosinschi, D., Boutin, M.P. et al. Hydrophobization of phosphorylated cellulosic fibers. Cellulose 23, 3511–3520 (2016). https://doi.org/10.1007/s10570-016-1071-2
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DOI: https://doi.org/10.1007/s10570-016-1071-2