| CPC C08G 59/1477 (2013.01) [C08G 59/5006 (2013.01); C08K 5/20 (2013.01); C08L 63/00 (2013.01); G01L 1/241 (2013.01)] | 2 Claims |
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1. A method of monitoring stress on a substrate, the method comprising:
forming a substrate comprising a composition comprising:
a thermosetting polymer network, and
a mechanophore covalently bonded to the thermosetting polymer network,
wherein the mechanophore is derived from cinnamamide;
measuring an optical property;
using the substrate;
measuring the optical property of the substrate after use of the substrate; and
comparing the measurement of the optical property of the substrate to a measurement of the optical property of the substrate prior to use, wherein comparing the measurement of the optical property is correlated to a stress applied to the substrate.
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