ELABORATION OF ORGANIC-INORGANIC HYBRID MATERIALS OBTAINED BY CHEMICAL REACTION OF POLYMETHYLHYDROSILOXANE AND BI-FUNCTIONAL HETEROCYCLIC MOLECULES

  • TAOUFIK HELLALI
    Université de Tunis, Institut Préparatoire aux Etudes d’Ingénieurs de Tunis, Département de chimie, Laboratoire de chimie de la matière condensée LCMC, 2 rue Jawaher Lel Nehru 1008 Montfleury, Tunis, Tunisie
  • AFIFA HAFIDH
    Université de Tunis, Institut Préparatoire aux Etudes d’Ingénieurs de Tunis, Département de chimie, Laboratoire de chimie de la matière condensée LCMC, 2 rue Jawaher Lel Nehru 1008 Montfleury, Tunis, Tunisie
    Afifa.hafidh@ipeit.rnu.tn
  • NEJI GHARBI
    Université de Tunis, Institut Préparatoire aux Etudes d’Ingénieurs de Tunis, Département de chimie, Laboratoire de chimie de la matière condensée LCMC, 2 rue Jawaher Lel Nehru 1008 Montfleury, Tunis, Tunisie
  • RIDHA KOSSAI
    Université de Tunis, Institut Préparatoire aux Etudes d’Ingénieurs de Tunis, Département de chimie, Laboratoire de chimie de la matière condensée LCMC, 2 rue Jawaher Lel Nehru 1008 Montfleury, Tunis, Tunisie

Abstract

New organic-inorganic hybrid materials G1-G5 were obtained by chemical reaction of polymethylhydrosiloxane (PMHS) and bi-functional heterocyclic molecules under 2:1 stoechiometry, in tetrahydrofurane as solvant, using hexachloroplatinic acid (H2PtCl2, 6H2O) as catalyst at 60 °C. This reaction leads to the formation of transparent and monolithic gels. The xerogels have been caracterized by infrared, 29Si and 13C CP MAS NMR spectroscopy. The results show the formation of Si–N; Si – O; Si – S bridges in produced xerogels. The thermal analysis of the xerogels was determined by TGA and DTA. Xerogels morphology and texture of the obtained materials were studied by scanning electron microscopy (SEM) and Brunauer – Emmet – Teller method (BET).

Cuvinte cheie

polymethylhydrosiloxane bifonctionnel heterocyclic molecules hybrid materials 29Si and 13C CP MAS-NMR TGA DTA SEM and BET