Cloisite 15Aº Nanoclay as an Effective PTC for the Epoxidation of Hydroxyl Terminated Polybutadiene (HTPB)
Nikje, Mir Mohammed Alavi; Nataj, Maryam Gholi
http://dx.doi.org/10.1590/0104-1428.1622
Polímeros: Ciência e Tecnologia, vol.24, n5, p.536-540, 2014
Abstract
A simple method is reported for the epoxidation of hydroxyl-terminated polybutadiene (HTPB) by using in-situ generated dimethyl dioxirane (DMD) as an oxidant and Cloisite 15Aº nanoclay as a phase-transfer catalyst (PTC). In order to find the optimum reaction conditions, real time analyses of the products as well as epoxidation progress, followed by 1HNMR and FTIR techniques at various reaction times and different PTC concentrations, were done. Obtained data revealed the selectivity of DMD/ Cloisite 15Aº in predominant cis double bonds epoxidation in comparison with trans and pendant vinyl functional groups.
Keywords
Hydroxyl-terminated polybutadiene (HTPB), epoxidation, dimethyl dioxirane, Cloisite 15Aº.
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