29Si NMR study of configurations of cyclo-linear polymethylsiloxanes
β Scribed by B. D. Lavrukhin; N. N. Makarova; I. M. Petrova
- Book ID
- 112387561
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 689 KB
- Volume
- 42
- Category
- Article
- ISSN
- 1573-9171
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## Abstract ^29^SiβNMR has been used to identify and analyze oligomeric mixtures of diorganyl cyclosiloxanes of the general formula F~__n__~D~__m__β__n__~ (D = (CH~3~)~2~SiO, F = CH~3~(CH~2~ο£ΎCH)SiO, __m__ = 3β5 and __n__ = 0 β__m__). Chemical shift assignments were confirmed by comparing ^29^SiβNMR
When moving from acidic to basic conditions for polycondensation of tetrafunctional alkoxysilanes, significant complications inhibit quantitative modeling of the polymerization process-most significantly formation of new liquid and solid phases. To understand what chemical processes influence the ev