A noninvasive method to assess the local monomer concentration within a wooden matrix, post monomer impregnation, by time-resolved diffuse optical spectroscopy is demonstrated. A data analysis technique for improving accuracy, which takes account of changes in the refractive index during the monomer uptake, has been employed. This technique can be potentially applied in the wood industry for the study of polymer composites as well as in cultural heritage science for noninvasively monitoring the penetration of chemical compounds used for consolidation or conservation purposes.
© 2014 Optical Society of America
Original Manuscript: October 10, 2013
Revised Manuscript: November 27, 2013
Manuscript Accepted: November 29, 2013
Published: January 6, 2014
Vol. 9, Iss. 3 Virtual Journal for Biomedical Optics
Andrea Farina, Ilaria Bargigia, Emma-Rose Janeček, Zarah Walsh, Cosimo D’Andrea, Austin Nevin, Michael Ramage, Oren A. Scherman, and Antonio Pifferi, "Nondestructive optical detection of monomer uptake in wood polymer composites," Opt. Lett. 39, 228-231 (2014)