Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
October 12, 2009
NEW TECHNOLOGIES: FTIR Microscopy for Kinetic Measurements in High-Throughput Photopolymerization: Experimental Design and Application
Peter M. Johnson, Jeffrey W. Stansbury, Christopher N. Bowman*
Libraries with varying composition and exposure time were developed to enable high-throughput analysis of conversion using FTIR spectroscopy. This technique was demonstrated by measuring viscosity and backbone chain structure effects using four monomers: DPGDA, TEGDA, bisphenol-A-glycidyl diacrylate and ethoxylated bisphenol-A diacrylate. DPGDA has equivalent viscosity and double bond concentration with a shorter backbone chain length as compared to TEGDA. The ultimate conversion of TEGDA copolymerizations as compared to equivalent DPGDA copolymerizations is lowered from 15 to 5% due to differences in crosslink space chemistry and glass transition temperatures of the copolymer formulation.
Macromol. React. Eng. DOI: 10.1002/mren.200900029
Other contributions to the article series on new technologies in polymer reaction engineering can be found at: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1862-8338/2465_nt.html