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

• Grant number: 13/22354-9
• Support type: 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 researcher: Celso Molina
• Grantee: Raul Pereira da Cruz
• Home Institution: Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF). Universidade Federal de São Paulo (UNIFESP). Campus Diadema. Diadema , SP, Brazil

Abstract

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.