EFFECTS OF HIGH SPEED ELECTRONS ON THE STRUCTURE OF POLYETHYLENE TEREPHTHALATE

Journal Article · Sun Apr 01 04:00:00 EST 1962 · J. Polymer Sci.

DOI:https://doi.org/10.1002/pol.1962.1205816684· OSTI ID:4829851

Slovokhotova, N A; Sadovskaya, G K; Kargin, V A

Polyethylene terephthalate (PET) films were irradiated with high speed electrons in vacuo. Their infrared spectra, solubility, and degree of swelling in o-chlorophenol were measured as a function of the irradiation dose. The investigation showed that irradiation causes both crosslinking and degradation. In the absence of air, crosslinking predominates over chain scission. The irradiation dose required for crosslinking of PET by far exceeds that required for crosslinking of polystyrene. Irradiation of PET is accompanied by the formation of polyphenyl systems. The initial partly crystalline PET becomes completely amorphous on irradiation. Irradiation causes isomerization of O(CH/ sub 2/)/sub 2/O groups in the polymer chain from the trans to the gauche form. Isomerization of O(CH/sub 2/)/sub 2/O groups under irradiation may be interpreted as indicating that a part of the ionizing radiation energy is dissipated and transformed into the thermal energy. (auth)

• Research Organization: Academy of Sciences, Moscow
• NSA Number: NSA-16-023746
• OSTI ID: 4829851
• Journal Information: J. Polymer Sci., Journal Name: J. Polymer Sci. Vol. Vol: 58
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AIR
CHEMICAL REACTIONS
CHEMISTRY
CROSS-LINKING
CRYSTALS
DECOMPOSITION
ELECTRON BEAMS
ELECTRONS
ENERGY
EXPANSION
FILMS
INFRARED RADIATION
IONIZATION
IONIZING RADIATIONS
IRRADIATION
ISOMERS
MEASURED VALUES
ORGANIC CHLORINE COMPOUNDS
PHENOLS
PHTHALIC ACID
POLYESTERS
POLYETHYLENES
POLYMERIZATION
POLYPHENYLS
POLYSTYRENE
RADIATION CHEMISTRY
RADIATION DOSES
RADIATIONS
SOLUBILITY
SPECTRA
TEREPHTHALIC ACID
VACUUM