NMR Determination of the Microstructure of Polyvinyl Chloride Sulfone). II. 13C-(1H) Spectra |
| |
| Authors: | R E Cais J H O'donnellt |
| |
| Institution: | 1. Chemistry Department , University of Queensland , Brisbane, 4067, Australia;2. Bell Telephone Laboratories , Murray Hill, New Jersey, 07974;3. Chemistry Department , University of Queensland , Brisbane, 4067, Australia |
| |
| Abstract: | 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. |
| |
| Keywords: | |
|
|
