Calorimetric Analysis of Photopolymerization

  • Charles E. Hoyle
Part of the Topics in Applied Chemistry book series (TAPP)

Abstract

A previous review published over a decade ago introduced the concepts inherent to the measurement of exotherms resulting from photopolymerization.1 Since then, the photocuring field has grown at an extremely rapid rate. Applications range from the curing of systems comprising acrylated oligomers and low-molecular-weight acrylates (both monofunctional and difunctional) for the production of highly cross-linked films to the selective hardening of microencapsulated spheres for generation of colored images by a latent dye transfer process.2–10 No matter what the final application, one universal challenge faces anyone who desires to formulate, develop, and successfully process a photocurable resin: how can the rate, degree of cure, and ultimately the kinetics of the photopolymerization process responsible for the curing and production of highly cross-linking networks be evaluated on a rather routine basis by a rapid method that is accurate and readily repeatable. Of course, just because one is able to measure the various kinetic parameters associated with the photopolymerization of functionalized formulations, there is no assurance that the physical properties desired for a particular application can be attained. However, it is highly unlikely that photocurable systems that show extremely low rates of polymerization and reduced overall conversion efficiency can be employed as useful formulations for practical applications under normal circumstances.

Keywords

Differential Scanning Calorimeter Polymerization Rate Photoinitiated Polymerization Percent Conversion Calorimetric Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • Charles E. Hoyle
    • 1
  1. 1.Department of Polymer ScienceUniversity of Southern MississippiHattiesburgUSA

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