Determination of the Intermolecular Entanglement Coupling Spacings in Polyisoprene by Viscosity Measurements.
- 1 January 1965
- journal article
- Published by National Institute of Standards and Technology (NIST) in Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
- Vol. 69 (1), 33-37
- https://doi.org/10.6028/jres.069A.006
Abstract
The entanglement molecular weight (M e ) for polyisoprene has been estimated from the dependence of solution viscosity on molecular weight. Polymer concentrations of 1.82, 3.64, and 14.56 g/100 cm3 were used. Certain theoretical relationships between viscosity and molecular weight have been confirmed, and the prediction concerning the dependence of the entanglement molecular weight on polymer concentration has been substantiated. Furthermore, no variation in M e was detected in the range of 25 to 75 °C.Keywords
This publication has 2 references indexed in Scilit:
- THE VISCOSITY OF HIGH POLYMERS—THE RANDOM WALK OF A GROUP OF CONNECTED SEGMENTSProceedings of the National Academy of Sciences, 1958
- Rheology of thermoplastic materials. I. PolystyreneJournal of Colloid Science, 1948