1. Hybrid Aluminum Colored Pigments Based on Gradient Copolymers Design
- Author
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Laurent Billon, Mathieu Joubert, Abdel Khoukh, Jean-François Tranchant, and Fabrice Morvan
- Subjects
Nitroxide mediated radical polymerization ,Materials science ,Polymers and Plastics ,Bulk polymerization ,Organic Chemistry ,Radical polymerization ,technology, industry, and agriculture ,macromolecular substances ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,Styrene ,chemistry.chemical_compound ,Monomer ,chemistry ,Polymerization ,Polymer chemistry ,Materials Chemistry ,Copolymer ,Gradient copolymers ,Physical and Theoretical Chemistry ,0210 nano-technology - Abstract
A colored polymer/aluminium hybrid pigment was synthesized by nitroxide mediated polymerization initiated from an inorganic surface. This approach requires the preparation of a vinyl dye monomer able to copolymerize with n-butyl acrylate (n-BuA) and styrene (S) from the surface of aluminium flakes. The linearity of the In([M] o /[M] t ) and of the M n as a function of time and conversion constitute the criteria of control/"living" polymerization, i.e. linearity of respectively In([M] o /[M] t ) = f(t) and the M n = f(conversion) plots. Kinetic measurements reveal an upward deviation from the linearity for n-BuA polymerization for very high conversion. The introduction of S monomer restores the control of the polymerization. Both the length of the grafted chains and the dye/styrene molar ratio influence the color of the hybrid material.
- Published
- 2009
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