Naslov
Morphological Changes in Segmented Polyurethanes under Thermal Treatment

Autori
Rek, Vesna ; Govorčin, Emi

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Advances in Urethane Science and Technology. Vol.11

Urednik/ci
Frisch, Kurt C. ; Klempner, Daniel

Izdavač
Technomic Publishing Co.

Grad
Lancaster

Godina
1992

Raspon stranica
173-191

ISBN
9780877628963

Ključne riječi
segmented polyurethane, differential scanning calorimetry, dynamic mechanical analysis, thermal properties
(segmented polyurethane, differential scanning calorimetry, dynamic mechanical analysis, thermal propertiesSe)

Sažetak
Segmented polyurethane elastomers with approximately 50wt % of hard segment content were studied.Morphological changes induced in these polyurethanes by annealing and quenching were investigated.The morphological changes were followed by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) as well as by static meshanical measurements.The annealing process caused increased mixing of hard and soft segments.The positions of the endotherms were changed as well as the Tg's of PUR.This was reflected in the shifts of the loss moduli and storage moduli.This indicates that the domain morphology is affected by thermal treatment.There are also changes in mechanical properties.The hard and soft segment ordering results in annealing endotherms that depend on the type of PUR, annealing temperature and the time following the quench.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

Napomena
ISSN 0044-6378 ; publikacija je indeksirana u WoS-u.

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