Cross-linking of hydroxyl-terminated polyols with triethyleneglycol diglycidyl ether: an alternative to toxic isocyanates

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dc.contributor.authorDossi, Eleftheria
dc.contributor.authorAkhavan, Jacqueline
dc.contributor.authorGaulter, Sally E.
dc.contributor.authorWilliams, Richard G.
dc.contributor.authorDoe, William J.
dc.date.accessioned2021-01-19T12:45:31Z
dc.date.available2021-01-19T12:45:31Z
dc.date.issued2018-01-16
dc.description.abstractIsocyanates are highly reactive and toxic substances with severe health effects. Certain diisocyanates are restricted under REACH – The European Regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals. Triethyleneglycol diglycidyl ether (TEGDGE) was used as an alternative to toxic isocyanates for the cross-linking of hydroxyl-terminated pre-polymers at 70oC. The effect of three curing accelerators was determined while following the reaction kinetics by 1H-NMR spectroscopy and differential scanning calorimetry (DSC). Polybutadiene (Poly BD R45HT-LO) and acrylic ester (HyTemp 4454) successfully cross-linked in 7–10 days to produce thermally stable networks with low glass transition temperatures, as observed by DSC. Pre-aging the polybutadiene resin promoted cross-linking with TEGDGE. Four energetic compositions were then prepared using cyclotrimethylenetrinitramine (RDX) and pentaerythritoltetranitrate (PETN) as fillers, and polybutadiene (Poly BD R45HT-LO) and acrylic ester (HyTemp 4454) as binders. Both binders successfully cross-linked with TEGDGE in the presence of RDX and PETN, but only PETN was found to be chemically compatible with the cross-linked polymers. These results show that TEGDGE is suitable as a replacement for toxic isocyanates for the cross-linking of hydroxyl-terminated polyols.en_UK
dc.identifier.citationDossi, E, Akhavan J, Gaulter SE, et al., (2018) Cross-linking of hydroxyl-terminated polyols with triethyleneglycol diglycidyl ether: an alternative to toxic isocyanates. Propellants, Explosives, Pyrotechnics, Volume 43, Issue 3, 2018, pp.241-250en_UK
dc.identifier.issn0721-3115
dc.identifier.urihttps://doi.org/10.1002/prep.201700220
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16200
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectPETNen_UK
dc.subjectRDXen_UK
dc.subjectcross-linked polymersen_UK
dc.subjecthydroxyl-terminateden_UK
dc.subjectToxic isocyanatesen_UK
dc.titleCross-linking of hydroxyl-terminated polyols with triethyleneglycol diglycidyl ether: an alternative to toxic isocyanatesen_UK
dc.typeArticleen_UK

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