Hydrogen peroxide sterilization sensor including thermal indicator component and reactant-functional sorbent, and method of use

A hydrogen peroxide sterilization sensor comprising:

• a backing substrate comprising at least one reservoir;
• a thermal indicator component disposed on the backing substrate comprising a heat-shrinkable film;
• a visual indicator disposed on the backing substrate;
• a reactant-functional porous sorbent disposed in the at least one reservoir of the backing substrate and in thermal contact with the heat-shrinkable film;
• a reactant comprising a material that reacts exothermically with hydrogen peroxide, wherein the reactant is impregnated in the reactant-functional porous sorbent;
• and
• an adhesive disposed at least partially on the backing substrate and between the reactant-functional porous sorbent and the heat-shrinkable film, wherein the adhesive is configured to lock the heat-shrinkable film in place,
• wherein the heat-shrinkable film is configured to dimensionally change in response to the heat generated from the exothermic reaction of the reactant-functional porous sorbent to expose the visual indicator.