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http://hdl.handle.net/2074/2536
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| Title: | Determination by 13C-NMR spectroscopy of the microstructure of copolymers of acrylic acid with vinyl acetate |
| Authors: | Brar, A S
Sunita |
| Keywords: | Copolymer
Volumetric titration
Reactivity ratios
Parameters
Number-average sequence |
| Issue Date: | 1991 |
| Citation: | European Polymer Journal,27(1), 17-20p. |
| Abstract: | Acrylic acid-vinyl acetate copolymers were prepared in bulk using benzoyl peroxide as initiator. Copolymer compositions were determined by volumetric titration; monomer reactivity ratios were determined by the method of Kelen-Tüdös. Terminal and penultimate reactivity ratios have been calculated using the observed monomer triad sequence distribution determined from 13C-NMR spectroscopy. Triad sequence distribution was used to calculate dyad concentrations, probability parameters, number-average sequence lengths and comonomer mol fractions in the copolymers. The observed triad sequence concentrations as determined from 13C-NMR agreed well with those calculated from reactivity ratios. |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/2536 |
| Appears in Collections: | Chemistry
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| brardet91.pdf | | 139Kb | Adobe PDF | View/Open |
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