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Dynamic mechanical thermal analysis of thermoset hydrogels

In this study, a water-based gel consisting of 20% (v/v) poly(maleic anhydride-co-isobutylene)-based composite is applied as a water-thin, low-viscosity fluid. At an engineered time, at 100–200°C and 7 MPa, liquid polymer rapidly sets at a right angle and cures in place into a strong set gel, as measured using oscillatory measurements. Designed to exhibit rapid and reversible strain in response to stress, elasticity is increased by 65% when reinforced with the addition of 10% (v/v) PEG. A highly stable hydrogel that is completely water-based provides elasticity and thermal resilience over a higher range in temperature for recovery of HTHP infrastructures.