The unsaturated polyesters derived from maleic anhydride and 2,2-di(4-hydroxypropoxyphenyl)propane were copolymerized with styrene in order to obtain the crosslinked materials. They were studied by means of high resolution 13C n.m.r. in the solid state (CP/MAS). The structural changes upon crosslink
Magic Angle Spinning-Cross Polarization13C NMR of crosslinked unsaturated polyester resins
โ Scribed by Maurizio Paci; Vittorio Crescenzi; Francesco Campana
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 196 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0170-0839
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## Synopsis ' C n m r has been employed to probe the molecular conformation and crystal structure of (1+6)-P-~-glucan (pustulan) in the solution, gel, and solid states. CP/MAS Y-nmr spectra recorded for partially crystalline solid pustulan display a resonance near 82 ppm that is absent in solution