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NMR study of phase composition and the process of phase separation in segmented polyurethanes

✍ Scribed by D.Sh. Idiyatullin; V.S. Smirnov; M.P. Letunovskii; V.V. Strakhov

Book ID
116049166
Publisher
Elsevier Science
Year
1989
Weight
366 KB
Volume
31
Category
Article
ISSN
0032-3950

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The phase-separation process in segmented copolymers is treated by first-order kinetics which couples with the Fox equation to derive an expression for describing the change of soft segment T, with the annealing time. Kinetic data of five commercial polyurethanes have been analyzed. The studies conc