## Abstract The dynamic mechanical thermal properties of a family of poly(α‐alkyl β,L‐aspartate)s bearing various cyclic, linear, and branched alkoxycarbonyl groups in the side chain were studied. The measurements carried out by dynamic mechanical thermal analysis (DMTA) revealed the significant in
Synthesis of Poly(α-alkyl β,L-aspartate)s by Transesterification
✍ Scribed by Margarita Morillo; Antxon Martínez de Ilarduya; Sebastián Muñoz-Guerra
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 188 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1022-1336
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## Abstract The conformation of several samples of poly(α,β‐L‐Asp) with a molar fraction of β‐bonds ranging from 0.1 to 0.55 was investigated by means of ir and CD spectroscopy and potentiometric titration and compared with the results obtained previously with poly(α‐L‐Asp). All samples investigate
## Abstract The oligo(β‐peptide)s, hexa(α‐isobutyl β,L‐aspartate) (Hex‐AIBLA) and octa(α‐isobutyl β,L‐aspartate) (Oct‐AIBLA), were synthesized in solution by using standard coupling methods. Powder x‐ray diffraction showed that the octamer crystallized in the two helical crystal forms known to exis
## Abstract The structure of poly(aspartic acid) prepared by thermal polycondensation has been studied by means of nmr spectroscopy. The analysis of the ^13^C‐nmr spectra of the polymer at various pH values and comparison with the spectrum of poly(α‐L‐aspartic acid) revealed that the polymer contai