Accession Number:

ADA222258

Title:

Directive Evidence for the Creation of Micropores in UV-Irradiated Poly(Methyl Methacrylate)

Descriptive Note:

Technical rept.

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY NY DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1990-05-31

Pagination or Media Count:

10.0

Abstract:

Films of Poly-Methyl Methacrylate including azobenzene were prepared by casting polymer solutions containing the probe or by exposing pre-irradiation films to the vapor of azobenzene. Under similar conditions, films which had been irradiated imbided more azobenzene than annealed, unirradiated films or irradiated films which had been annealed above glass transition temperature. These materials were irradiated at 335 nanometers and the amount of trans azobenzene which had been formed was monitored spectrophotometrically. The largest amount of photoisomerization was observed for the pre-irradiated samples which has been penetrated by azobenzene from the vapor, indicating that the created free volume allowed the isomerization to proceed more easily. JG

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE