## Abstract **Summary:** Segmented block copolymers, consisting of nonโpolar soft segments from hydroxylโterminated liquid natural rubber (HTNR) and polar hard segments from __ฮฑ__,__ฯ__โdiisocyanato telechelics obtained by โcrissโcrossโโcycloaddition, have been synthesized. The block copolymer form
Segmented block copolymers based on liquid natural rubber
โ Scribed by T. Ravindran; M. R. Gopinathan Nayar; D. Joseph Francis
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 793 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0021-8995
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Segmented block copolymers were synthesized from hydroxyl-terminated liquid natural rubber and polyurethane oligomers based on Bisphenol A and toluene diisocyanate by one-shot and two-shot processes in solution. Structural features were characterized by infrared and nuclear magnetic resonance spectr
## Abstract This article discusses the rate of water vapor transmission (WVT) through monolithic films of segmented block copolymers based on poly(ethylene oxide) (PEO) and monodisperse crystallisable tetraโamide segments. The polyether phase consisted of hydrophilic PEO or mixtures of PEO and hydr