Journal
COLLOID AND POLYMER SCIENCE
Volume 285, Issue 2, Pages 169-175Publisher
SPRINGER
DOI: 10.1007/s00396-006-1543-2
Keywords
polyurethane anionomers; polarity of bonds; segmented structure; DSC; SAXS; thermal decomposition
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Small angle X-ray scattering and differential scanning calorimetry methods were employed to characterise the internal order of structural phases present in polyurethane coatings obtained as a result of water evaporation from anionomer dispersions. Those anionomers were produced in the reaction of aromatic, cycloaliphatic and aliphatic diisocyanates with polyoxyethylene glycol, 2,2-bis-(hydroxymethyl)propionic acid and 1,6-hexamethylenediamine. The decisive effects were found from ionic and polar structures within the rigid urethane and urea segments on the ordered arrangement degree of the supermolecular structures in the obtained anionomers. That becomes apparent in differential scanning calorimetry thermograms and contributes to improved thermal stability of the produced polyurethane coatings.
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