Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 330, Issue 2, Pages 303-309Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2008.10.081
Keywords
Layered zinc hydroxide nitrate; Anionic dyes; Intercalation; Poly(vinyl alcohol); Polymer composites; Multifunctional materials
Categories
Funding
- CNPq
- FINEP
- CAPES
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Different anionic blue and orange dyes have been immobilized on a zinc hydroxide nitrate (Zn-5(OH)(8)(NO3)(2)center dot nH(2)O - Zn-OH-NO3) by anion exchange with interlayer and/or outer surface nitrate ions of the layered matrix. Orange G (OG) was totally intercalated, orange II (OII) was partially intercalated, while Niagara blue 3B (NB) and Evans blue (EV) were only adsorbed at the outer surface. Several composite films of poly(vinyl alcohol) - PVA were prepared by casting through the dispersion of the hybrid material (Zn-OH-OG) into a PVA aqueous solution and evaporation of water in a vacuum oven. The obtained composite films were transparent, colored, and capable of absorbing UV radiation. Improved mechanical properties were also obtained in relation to the nonfilled PVA films. These results demonstrate the onset of a new range of potential applications for layered hydroxide salts in the preparation of polymer composite Multifunctional materials. (c) 2008 Elsevier Inc. All rights reserved.
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