| Autor: |
Cais, R. E., O'donnellt, J. H. |
| Zdroj: |
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry; July 1976, Vol. 10 Issue: 5 p769-780, 12p |
| Abstrakt: |
The 13C-(1H) NMR spectra of poly(vinyl chloride sulfone)s with macroscopic compositions corresponding to the ratio vinyl chloride (V):SO2(S) = n from ca. 1 to 4 have been analyzed in terms of comonomer sequences and configurational placements. In the copolymer with n ≃ 1, methylene and methine carbons in SVS sequences were resolved and were sensitive to "across SO2" tacticity. No SVS sequences were observed in the copolymer with n = 2.0, confirming that it had a regular SVVS structure, which also showed a high "internal" stereosequence regularity. It was not possible to discriminate the methylene or methine carbon atoms in S(V)n S sequences with n ≥ 2. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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