Accession Number : ADA295679

Title :   The Synthesis, Characterization, and Photochemical Crosslinking of an NLO Epoxy Polymer.

Descriptive Note : Technical rept.,

Corporate Author : NEBRASKA UNIV LINCOLN DEPT OF CHEMISTRY

Personal Author(s) : Goodson, Theodore ; Takaca, James M. ; Wang, C. H. ; Zhang, Lei

PDF Url : ADA295679

Report Date : 20 JUN 1995

Pagination or Media Count : 17

Abstract : A Photocrosslinkable second order nonlinear optical (NLO) epoxy polymer, BisphenolA-Nitroaminotolane, containing covalently attached cinnamate side chain substituents (BisA-NAT-CM), was synthesized. After corona poling second harmonic generation (SHG) is used to measure the relaxation of the an isotropy after the electric field is removed. Upon photolysis at 260 nm the cinnamoyl side chains undergo photochemical dimerization to crosslink the NLO polymer. Photobleaching is not a problem under these conditions. The photocrosslinked NLO polymer shows virtually no relaxation over a period of 500 hours at room temperature and good temporal stability at temperatures as high as 110 deg C. jg

Descriptors :   *PHOTOCHEMICAL REACTIONS, *POLYMERS, *NONLINEAR OPTICS, *CROSSLINKING(CHEMISTRY), *EPOXY COMPOUNDS, TEMPERATURE, PHOTOLYSIS, SYNTHESIS, SECOND HARMONIC GENERATION, COVALENT BONDS, ELECTRIC FIELDS, ROOM TEMPERATURE, ORGANIC COMPOUNDS, DIMERS, ELECTRICAL CORONA.

Subject Categories : Polymer Chemistry
      Organic Chemistry
      Physical Chemistry
      Laminates and Composite Materials
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE