✦ LIBER ✦

Structure and physical properties of segmented polyurethane elastomers containing chemical crosslinks in the hard segment

✍ Scribed by Zoran S. Petrović; Ivan Javni; Vladimir Divjaković

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 388 KB
Volume: 36
Category: Article
ISSN: 0887-6266
DOI: 10.1002/(sici)1099-0488(19980130)36:2<221::aid-polb3>3.0.co;2-u

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✦ Synopsis

Two series of segmented polyurethanes, one containing 50% soft segments and the other with 70% soft segments were synthesized. Chemical crosslinks were introduced through the hard segment in a controlled way. Chemical polyurethane networks were characterized by swelling. The effect of the degree of crosslinking on properties was examined. It was found that chemical crosslinks in the hard segment reduce the mobility of the soft phase and destroy the crystallinity of the hard phase, but they improve heat stability of the hard domains.

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