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Proton spin-lattice and spin-spin relaxation times in annealed poly(ethylene terephthalate)

✍ Scribed by Tanaka, Hiroshi

Publisher
Wiley (John Wiley & Sons)
Year
1989
Tongue
English
Weight
276 KB
Volume
21
Category
Article
ISSN
0007-1641

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πŸ“œ SIMILAR VOLUMES

Temperature dependence of proton spin-la
Temperature dependence of proton spin-lattice and spin-spin relaxation times in isotactic polypropylene. Effect of annealing
✍ Hiroshi Tanaka; Fumie Kohrogi; Kazuhiko Suzuki πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 356 KB

The temperature dependences of the proton spin-lattice, Tt, and spin-spin, T2, relaxation times of isotactic polypropylene films with different thermal histories and atactic fraction were investigated. A T~ minimum occurs for both melt-quenched and annealed samples at about 70Β°C. It shifts to lower

Proton spin–lattice and spin–spin relaxa
Proton spin–lattice and spin–spin relaxation times in isotactic polypropylene. II. Effects of stretching ratio and temperature
✍ Hiroshi Tanaka πŸ“‚ Article πŸ“… 1983 πŸ› John Wiley and Sons 🌐 English βš– 383 KB πŸ‘ 2 views

Proton spin-lattice, T I , and spin-spin, Tz, relaxation times of uniaxially stretched polypropylene film were measured at 40Β°C using a wide line pulse spectrometer operating at 19.8 MHz. T11, the longer T I , increases almost linearly with increasing stretching ratio, and Tza, Tz of the amorphous r