Studies on sweet potatoes—III. Distribution of unit chains of branched and unbranched molecules of starch

Studies on thermotropic liquid crystalli

Studies on thermotropic liquid crystalline polyurethanes. III. Synthesis and properties of polyurethane elastomers by using various mesogenic units as chain extender

✍ Shih-Jieh Sun; Teh-Chou Chang 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 557 KB

## SYNOPSIS Four series of thermotropic polyurethane elastomers (TPUEs) were synthesized in this study. The hard segments were formed by using 4,4'-methylenedicyclohexyl diisocyanate (H,,MDI) reacted with various mesogenic units, such as benzene-1,4-di(4-iminophenoxyn-hexanol), benzene-1,4-di(4-im