New structures from the thermal rearrangement of polybutadiene revealed by 2D HSQC NMR

Abstract : The thermal reactions of polybutadiene (PB) at 260 °C in inert atmosphere were followed by 1H and 13C NMR spectroscopy. Within 24 h of heating, the change in the intensities of some peaks and the appearance of new peaks of NMR spectra permits to follow the reactions occurring in polybutadiene. The sample, after heating for 6 h, was then characterized by a two dimensional HSQC NMR spectrum, showing the appearance of CH3CH moiety, and the migration of double bond in polybutadiene. From these results the new mechanism of intra/intermolecular reactions was proposed.
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Submitted on : Monday, August 22, 2011 - 11:12:57 AM
Last modification on : Tuesday, July 23, 2019 - 10:52:11 AM

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Nguyen Q. Hung, Corinne Sanglar, Marie-Florence Grenier-Loustalot, Pham V. Huong, Hoang N. Cuong. New structures from the thermal rearrangement of polybutadiene revealed by 2D HSQC NMR. Polymer Degradation and Stability, Elsevier, 2011, 96 (7), pp.1255-1260. ⟨10.1016/j.polymdegradstab.2011.04.008⟩. ⟨hal-00616347⟩

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