Published March 1992 | Version v1
Journal article Metadata-only

Study of structure and the dipolar thermal relaxation on γ-irradiated PET films

Creators

  • 1. Univ. of Science and Technology of China
  • 2. Qingdao Univ. (China)

Description

The behavior of dipolar thermal relaxation of γ-irradiated poly (ethylene terephthalate) (PET) is studied by the method of TSC. 60Co γ-irradiation of a larger dose (50-500 Mrad) leads to the breaking of macromolecular chains and the increasing of group density of phenyl ;with oxygen in PET. The α peak of short-circuit thermally stimulated current shifts to the lower temperature when the irradiation dose is increased. The γ-irradiation has no remarkable effect on the activation energy and the time constant of dipolar thermal relaxation for the main chain segmental motion in amorphous region of γ-irradiated PET films

Additional details

Publishing Information

Journal Title
Journal of China University of Science and Technology
Journal Volume
22
Journal Issue
1
Journal Page Range
p. 64-69.
ISSN
0253-2778
CODEN
CKHPD7

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
24009518
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Descriptors DEI
ACTIVATION ENERGY; COBALT 60; GAMMA SOURCES; IRRADIATION; MOLECULAR STRUCTURE; POLYETHYLENES; RADIATION DOSES; RELAXATION TIME; TEMPERATURE DEPENDENCE; TEREPHTHALIC ACID; THERMOLUMINESCENCE
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBOXYLIC ACIDS; COBALT ISOTOPES; DICARBOXYLIC ACIDS; EMISSION; ENERGY; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LUMINESCENCE; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHOTON EMISSION; POLYMERS; POLYOLEFINS; RADIATION SOURCES; RADIOISOTOPES; YEARS LIVING RADIOISOTOPES