ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Complexes of urea with polyethers, \documentclass{article}\pagestyle{empty}\begin{document}$\rlap{--} [\left( {{\rm CH}_2 } \right)_m {\rm O\rlap{--} ]}_n$\end{document} (m = 2-4, 6, 8-10), were prepared, and their crystal structures and decomposition temperatures were studied. The crystal structures of the complexes with polyethers (m ≥ 3) are similar to those of n-alkanes, so-called urea adducts. Only poly(oxyethylene), (m = 2), presents a complex of a different type of crystal structure. The decomposition temperatures of the complexes are in the range of 134 to 144°C and change in parallel with the melting points of polyethers themselves against the number of CH2 groups in the monomeric units.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1984.021851125
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