The thermal analyses of polymers. II. Thermomechanical analyses of segmented polyurethane elastomers
โ Scribed by G. W. Miller; J. H. Saunders
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 564 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0021-8995
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A series of eight thermoplastic polyurethane elastomers were synthesized from 4,4-methylene diphenyl diisocyanate (MDI) and 1,4-butanediol (BDO) chain extender, with poly(hexamethylene oxide) (PHMO) macrodiol soft segments. The PHMO molecular weights employed ranged from 433 g/mol to 1180 g/mol. All
## Abstract Longโchain heteroatomโcontaining telechelic diols with 29โ32 atoms in the backbone were synthesized by a oneโstep, freeโradical telomerization of 10โundeceneโ1โol with commercially available __ฮฑ__,__ฯ__โdithiols. The oxygen and sulfur atoms caused a decrease in the melting point and ent