ISSN:
0449-296X
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The study of the literature shows that in the copolymerization of ethylene and vinylacetate there is an evident dependence on the relative reactivity of ethylene. For this change of the r-value of ethylene there are two explanations: real change of reactivity of the ethylene, or effects of heterogeneity. The experiments were carried out under pressures from 100 to 300 ats and at temperatures from 60 to 200°C, as well as under 1200-2400 ats and at 160-240°C. We find that the change of the r-value of the ethylene is caused by heterogeneity effects and the r-values obtained must be considered as apparent r-values.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1971.150090316
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