Hydrogen-bonding properties of hard-segment model compounds in polyurethane block copolymers
β Scribed by Brunette, C. M.; Hsu, S. L.; MacKnight, W. J.
- Book ID
- 120830197
- Publisher
- American Chemical Society
- Year
- 1982
- Tongue
- English
- Weight
- 741 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0024-9297
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## Abstract The properties of segmentedβcopolymerβbased Hβbonding and nonβHβbonding crystallisable segments and poly(tetramethylene oxide) segments were studied. The crystallisable segments were monodisperse in length and the nonβhydrogenβbonding segments were made of tetraamidepiperazineterephthal
## Abstract Several molecularly uniform oligourethane model compounds for the hard segment of segmented polyurethane elastomers with piperazine (PIP) and tetramethylene bischloroformate based hard segments have been synthesized. Xβray structure analysis was performed on single crystals with both co