Addition of microcrystalline cellulose to an alkyd resin/titanium dioxide film: effect on dielectric properties
Adel Zyane,
El-houssaine Ablouh,
El Mouloudi Sabbar,
François Brouillette,
Ahmed Belfkira
Affiliations
Adel Zyane
Bioorganic and Macromolecular Chemistry Laboratory, Department of Chemistry, Faculty of Sciences and Technology, Cadi Ayyad University, 40000, Marrakesh, Morocco
El-houssaine Ablouh
Bioorganic and Macromolecular Chemistry Laboratory, Department of Chemistry, Faculty of Sciences and Technology, Cadi Ayyad University, 40000, Marrakesh, Morocco; Center of Analysis and Characterization, Cadi Ayyad University, 40000, Marrakesh, Morocco; Corresponding author.
El Mouloudi Sabbar
Chouaïb Doukkali University, Material Physicochemistry Laboratory, BP 20, 24000 El-Jadida, Morocco
François Brouillette
Innovations Institute in Ecomaterials, Ecoproducts, and EcoEnergies - Biomass Based (I2E3), Université du Québec à Trois-Rivières, Trois-Rivières, QC, G9A 5H7 Canada
Ahmed Belfkira
Bioorganic and Macromolecular Chemistry Laboratory, Department of Chemistry, Faculty of Sciences and Technology, Cadi Ayyad University, 40000, Marrakesh, Morocco
In this study, various composite films were prepared by varying the amounts of long-oil Alkyd Resin (AR), Titanium Dioxide (TiO2) and Microcrystalline Cellulose (MCC). The effects of each component, TiO2 and MCC, on the properties and microstructure of the dry film were determined by examining images obtained by scanning electron microscopy (SEM) and studying the evolution of dielectric properties, the dielectric constant and the loss factor, against frequency at room temperature. Results showed that the introduction of the TiO2/MCC powder with a weight ratio larger than 1 and a volumetric pigment concentration (VPC) less than 50% allowed a better dispersion of the particles and fitted well the Linchtencker logarithmic mixing law and the Maxwell-Garnett theory. Finally, a marked improvement of the dielectric constant with respect to those of pure alkyd resin and AR/TiO2 composites was observed.
