On the Thermodynamics of Chemomechanical Energy Conversion Realised by Neutral Gels

Chemomechamcal energy conversion exhibited by a gel lever has been studied both theoretically and experimentally. Based on the thermodynamical theory of anisotropic swelling, the effective mechanical work produced, the chemical energy consumed, and the efficiency of conver sion are discussed. The results of model calculations are compared with real experiments performed on water-swollen poly(vinyl alcohol) gels. The mechanical work as well as the free energy change during the process have been determined from experimental data.