Solid State 13 C CP-MAS NMR Studies of the Crystallinity and Morphology of Poly( l -lactide)
✍ Scribed by Thakur, Khalid A. M.; Kean, Robert T.; Zupfer, John M.; Buehler, Nancy U.; Doscotch, Matthew A.; Munson, Eric J.
- Book ID
- 118149907
- Publisher
- American Chemical Society
- Year
- 1996
- Tongue
- English
- Weight
- 327 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0024-9297
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## Abstract Scleroglucan is a branched poiysaccharide, soluble in water. Solid‐state and solution ^13^C NMR were used to follow the fixation of water molecules on anhydrous scleroglucan and the evolution of the scleroglucan—water complex from the solid state to the gel and solution state. Determina
## Abstract Primary and tertiary amine‐initiated polymerizations of L‐alanine‐__N__‐carboxyanhydride (L‐Ala‐NCA) were conducted at 20 or 100°C in a variety of solvents. The 75.5‐MHz ^13^C‐nmr CP/MAS spectra of the resulting poly(L‐alanines) revealed that all samples contain both α‐helix and pleated