Characterization of electron-irradiated biaxially-oriented polypropylene films

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/23.3697· OSTI ID:6668939

Hammoud, A N; Laghari, J R; Krishnakumar, B

Post-radiation changes in the electrical and mechanical properties of capacitor-grade isotactic polypropylene films exposed to electron radiation were reported in a previous paper. Based on the data obtained, it was suggested that crosslinking, chain scission and oxidative degradation were responsible for the radiation-induced changes in the film. In the present investigations, additional electrical characterizations that included the dc breakdown voltage and ac conductivity measurements were performed. Effects of the electron radiation on the physical and chemical properties were also evaluated so as to identify the actual degradation mechanisms. These studies included scanning electron microscopy, X-ray diffraction, infrared spectroscopy and sol gel measurements. The results obtained confirm that crosslinking and chain scission of the polymer are responsible for the changes in the lower dose range, whereas oxidative degradation become predominant at higher dose levels.

• Research Organization: Dept. of Electrical and Computer Engineering, State Univ. of New York at Buffalo, Buffalo, NY (US)
• OSTI ID: 6668939
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. 35:3; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360605* -- Materials-- Radiation Effects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
CAPACITORS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CROSS-LINKING
CURRENTS
DATA ANALYSIS
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRONS
ELECTROSTATICS
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
FILMS
KINETICS
LEPTONS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
POLYMERIZATION
POLYMERS
POLYOLEFINS
POLYPROPYLENE
RADIATION EFFECTS
REACTION KINETICS
STRUCTURAL CHEMICAL ANALYSIS