10.6084/m9.figshare.6797768.v1
Lei Jiang
Lei
Jiang
Zhiyong Ren
Zhiyong
Ren
Wei Zhao
Wei
Zhao
Wentao Liu
Wentao
Liu
Hao Liu
Hao
Liu
Chengshen Zhu
Chengshen
Zhu
Supplementary material from Synthesis and structure/properties characterizations of four polyurethane model hard segments
The Royal Society
2018
polyurethane hard segment
structural characterization
crystallization behaviour
hydrogen bonding
2018-07-10 12:46:19
Journal contribution
https://rs.figshare.com/articles/journal_contribution/Supplementary_material_from_Synthesis_and_structure_properties_characterizations_of_four_polyurethane_model_hard_segments/6797768
Four model polyurethane (PU) hard segments were synthesized by reaction of butanol with four typical diisocyanates. The four diisocyanates were aromatic 4,4′-diphenylmethane diisocyanate (4,4′-MDI) and MDI-50 (50% mixture of 2,4′-MDI and 4,4′-MDI), cycloaliphatic 4,4′-dicyclohexylmethane diisocyanate and linear aliphatic 1,6-hexamethylene diisocyanate. FTIR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, MS, X-ray and DSC methods were employed to determine their structures and to analyse their crystallization behaviours and hydrogen bonding interactions. Each of the four PU compounds prepared in the present work displays unique spectral characteristics. The FTIR bands and NMR resonance peaks assigned in the four samples thus provide a reliable database and starting point for investigating the relationship between hard segment structure and the crystallization and hydrogen bonding behaviour in more complex-segmented PU compositions.