Three-Dimensional Photochemical Machining with Lasers
Abstract
Our research efforts during this reporting period have focused on (a) continuing to investigate and characterize the brominated protoporphyrin photoinitiator system we discovered during the second quarter's research, (b) continuing our search for other candidate materials which offer the promise of providing selective photopolymerization when irradiated simultaneously with two laser beams of different colors, but of being inert to the presence of either beam alone, and (c) conducting a detailed study of several porphyrin-based photoinitiator molecules in a different monomer system which has been selected because of its ability to crosslink readily. In particular, we have been studying the behavior of our porphyrin initiators and sensitizers in the monomer, trimethylolpropanetriacrylate (TMPTA). This polymer system crosslinks and hardens very efficiently upon two-beam irradiation using several of our novel brominated prophyrin photoinitiators, as well as with a two-component photoinitiator system consisting of tetraphenylporphyrin and naphthalene sulfonyl chloride. (aw)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1983
- Accession Number
- ADA217788
Entities
People
- Robert E. Schwerzel
Organizations
- Battelle Memorial Institute