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. 2019 Jul 24;12(15):2350. doi: 10.3390/ma12152350

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Cleavage kinetics of photopatternable epoxy-based thermosets versus anhydride structure. The normalized depletion of the nitro groups (at 1537 cm⁻¹) is followed upon prolonged UV irradiation (74.5 mW cm⁻²). The lines are a guide for the eye. (b) Normalized depletion of the nitro groups (at 1537 cm⁻¹) in epoxy-NBE/HHMPA networks as a function of the reaction temperature: (full triangles) no additional heating of the sample during UV exposure (T_irr < T_g) and (open triangles) simultaneous heating of the sample to 80 °C (T_irr > T_g). The lines are a guide for the eye.