ISSN:
0887-6266
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
This paper continues an investigation into the ethylene-vinyl chloride copolymers prepared by partial reduction of poly(vinyl chloride). The infrared spectra of the copolymers have been obtained and the individual resonances assigned. Each infrared band has been quantitatively analyzed in terms of peak position (cm-1) and intensity, and correlations with the sequence microstructure (dyad, triads, etc.) have been determined. The infrared resonances have been found to be sensitive to long sequences; i.e., (V)x or (E)x where x ≥ 10. Sequences of up to 10-15 monomer units were seen to affect the position (cm-1) and intensity of C—H stretching and bending frequencies. Methylene rocking bands between 850 and 700 cm-1 were observed to be sequence dependent with —V(E)xV— resonanting at 860, 750, or 730 cm-1 for x = 0, 1 and 2, or ≥3, respectively. The C—Cl stretching resonances, which are well known for their conformational complexity in pure PVC, were found to be dominated by sequence length effects reducing to two bands at 665 and 610 cm-1 characteristic of and isolated —CH—Cl unit in a long methylene chain.
Additional Material:
15 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/polb.1986.090240801
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