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Effect of the polymer chain length, polyoxometalate concentration and surface treatment on recycled PET for hybrid photochromic films

Grant number: 13/22354-9
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): January 01, 2014
Effective date (End): December 31, 2014
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
Principal Investigator:Celso Molina
Grantee:Raul Pereira da Cruz
Host Institution: Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF). Universidade Federal de São Paulo (UNIFESP). Campus Diadema. Diadema , SP, Brazil


The goal of this research project is focused in the synthesis, characterization and study of the effects of polymer chain length, concentration of polyoxometalates and also surface treatment of recycled polyethyleneterephthalate (PET) substrates of photochromic films. Organic - Inorganic Hybrids (OIH) so-called di-ureasil with different polymer length containing different phosphotungstic acid H3PW12O40 (PWA) content will be obtained by sol gel process on flexible PET recycled substrate. Moreover, surface treatment by using alkoxides such as amino and fluorsilanes will be performed on PET substrate aiming the wettability control between OIH/PWA/substrate.

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