Cellulose

, Volume 23, Issue 6, pp 3511–3520 | Cite as

Hydrophobization of phosphorylated cellulosic fibers

Original Paper

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.

Keywords

Cellulose Fiber Lignocellulose Kraft Phosphorylation Flame retardant Alkylation Hydrophobization Composite material 

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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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  1. 1.Centre de Recherche sur les Matériaux LignocellulosiquesUniversité du Québec à Trois-RivièresTrois-RivièresCanada
  2. 2.Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences et TechniquesUniversité de LimogesLimoges CedexFrance

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