Molecular Motion in Polyethylene. II
- 1 May 1959
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 30 (5) , 1272-1275
- https://doi.org/10.1063/1.1730170
Abstract
Nuclear magnetic relaxation times T1 and T2 have been measured in various polyethylene melts to 200°C. Two distinct T2's can be resolved in all cases but single T1's have been found. T1 is never equal to T2. A self‐consistent explanation is offered in terms of the theory of Kubo and Tomita as modified by (1) the assumption of a very broad distribution of motional correlation times, and (2) the assumption of a ``two‐phase'' structure of the polymer melt.Keywords
This publication has 11 references indexed in Scilit:
- Molecular motion in polyethyleneJournal of Polymer Science, 1957
- Spin Echo ApparatusReview of Scientific Instruments, 1957
- Nuclear Magnetic Relaxation in Polytetrafluoroethylene and PolyethyleneThe Journal of Chemical Physics, 1957
- Molecular weight‐intrinsic viscosity relationship and molecular weight distribution of low pressure polyethylenesJournal of Polymer Science, 1957
- A General Theory of Magnetic Resonance AbsorptionJournal of the Physics Society Japan, 1954
- Effects of Diffusion on Free Precession in Nuclear Magnetic Resonance ExperimentsPhysical Review B, 1954
- Relaxation Effects in Nuclear Magnetic Resonance AbsorptionPhysical Review B, 1948
- Nuclear InductionPhysical Review B, 1946
- Anomalous Dispersion and Dielectric Loss in Polar PolymersThe Journal of Chemical Physics, 1941
- The Distribution of Relaxation Times in Typical DielectricsJournal of Applied Physics, 1936