LAPONITE® (Lap) clay mineral was successful functionalized by triazole groups in a two steps procedure. First, the Lap edges were modified with 3-azidopropyltrimethoxysilane by traditional heating and microwave irradiation. Microwave irradiation allowed us to obtain high loading onto the Lap edges in lower times compared to those obtained through conventional method. Afterwards, the triazole moieties were obtained by reaction be- tween azido functionalized Lap and propargyl alcohol. The successful functionalization of Lap was proved by thermogravimetric analysis, FT-IR spectroscopy, dynamic light scattering and ζ-potential measurements. Finally, the effects of the surface modification on the gel formation ability of Lap were studied by gelation tests and the morphology of the gel phases was investigated by polarized optical microscopy measurements and diffusion experiments.

Carmelo Giuseppe Colletti, M.M. (2020). Synthesis, characterization and study of covalently modified triazole LAPONITE® edges. APPLIED CLAY SCIENCE, 187, 1-6 [10.1016/j.clay.2020.105489].

Synthesis, characterization and study of covalently modified triazole LAPONITE® edges

Marina Massaro;Giuseppe Lazzara;Giuseppe Cavallaro;Stefana Milioto;Ivana Pibiri;Renato Noto;Serena Riela
2020

Abstract

LAPONITE® (Lap) clay mineral was successful functionalized by triazole groups in a two steps procedure. First, the Lap edges were modified with 3-azidopropyltrimethoxysilane by traditional heating and microwave irradiation. Microwave irradiation allowed us to obtain high loading onto the Lap edges in lower times compared to those obtained through conventional method. Afterwards, the triazole moieties were obtained by reaction be- tween azido functionalized Lap and propargyl alcohol. The successful functionalization of Lap was proved by thermogravimetric analysis, FT-IR spectroscopy, dynamic light scattering and ζ-potential measurements. Finally, the effects of the surface modification on the gel formation ability of Lap were studied by gelation tests and the morphology of the gel phases was investigated by polarized optical microscopy measurements and diffusion experiments.
Settore CHIM/06 - Chimica Organica
Settore CHIM/02 - Chimica Fisica
Carmelo Giuseppe Colletti, M.M. (2020). Synthesis, characterization and study of covalently modified triazole LAPONITE® edges. APPLIED CLAY SCIENCE, 187, 1-6 [10.1016/j.clay.2020.105489].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/430121
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