ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The anionic polymerizations of acrolein (AL) in the presence of polyacrylamide (poly-AAm) induced by imidazole (Im), pyridine (Py)-water, and sodium hydorxide as the anionic initiator were carried out kinetically in an ethanol-water mixture at 0°C. The rate of polymerization Rp in the presence of poly-AAm increased markedly in the Im and Py-water systems, whereas the polymerizability of AL is little changed in the potassium persulfate and silver nitrate (redox systems). These results suggest and the interaction between the amide groups in poly-AAm, the initiator, and the AL monomer is intramolecular. It also indicates the presence of interaction between the carbonyl group of the amide compound and the group of Im. On the other hand, the chemical shifts of the proton of Im in the presence of several amide compounds such as acetamide, propionamide, and N,N-dimethylacetamide were observed in CDCl3 by nuclear magnetic resonance (NMR) spectroscopy. These results were discussed by assuming a conformational change in poly-AAm in the ethanol-water mixture.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1983.170210124
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