Abstract
Diffusion in polymer and solvent-induced stresses has been well investigated in the past. In this experiment, we found that 2-ethylhexyl alcohol could rapidly extract methanol from PMMA by mass measurement, thickness measurement and FTIR spectrum. Crack formed during methanol desorption. We observed the crack growth with optical microscope (OM) and studied different parameters affected crack growth like immersion tempersture and immersion time. Different immersion times and immertion temperatures carried out different crack densities and crack depths. We utilized tensile test to quantify the extent of crack destruction on specimens and the software ImageJ to calculate the crack density and crack depth. Crack healing in PMMA with solvent has been proposed. We heals the cracked specimen with methanl at different temperatures and utilized tensile test to quantify the extent of crack healing. The healing rate increases with increasing temperature. Finally. we used mixture of methanol with dye to heal the cracked specimen which is possiblely applied for embedding particles in polymer.