Date of Award

Summer 8-1988

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Physics

Committee Director

Wynford L. Harries

Committee Member

G. S. Khandelwal

Committee Member

Gilbert R. Hoy

Committee Member

James L. Cox, Jr.

Call Number for Print

Special Collections LD4331.P48B72

Abstract

Commercial films of polyetherimide (PEI), polyetheretherimide (PEEI), polyethylene terephthalate (PET), and polycarbonate (PC) were exposed in vacuum to l 00-keV electron radiation to total absorbed doses of l, l 0, l 00, 300, and 500 kilograys. The concentration of radiation-generated radicals, as measured by electron paramagnetic resonance (EPR), increased by over an order of magnitude in all four polymers. Correspondingly, the intensity of the infrared absorption peaks increased uniformly for all doses. Solubility tests resulted in decreased solubility in all polymers. IR, EPR, and solubility suggest dehydrogenation of the aliphatic C-H and phenyl C-H sites. The data indicated that cross linking is occurring in all polymers tested.

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DOI

10.25777/qcr0-h848

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