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Mark W. Tibbitt, April M. Kloxin and Kristi S. Anseth Modeling controlled photodegradation in optically thick hydrogels Journal of Polymer Science Part A: Polymer Chemistry 51

Article first published online: 7 FEB 2013 | DOI: 10.1002/pola.26574

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A statistical-kinetic model of photodegradation is presented to describe light-induced property changes in photodegradable, crosslinked hydrogels. In this manner, spatial and temporal alterations to material properties can be quantified for photoresponsive hydrogels based on central physical parameters of the network. The model was applied to predict the degradation and erosion of PEGdiPDA hydrogels and predictions fit well with experimental data. In all, this model aids in understanding degradation and erosion behavior in photodegradable hydrogels and may be employed in the design of photoresponsive networks for a variety of applications.

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