Craze kinetics for PMMA in liquids

Observations are reported on the growth of crazes in PMMA immersed in a range of alcohols, some less active crazing agents and some mixtures of methanol and inactive agents. When there is substantial plasticization of the craze, the growth is adequately described by the fluid flow model. Mixtures are also explicable in these terms since the active agent is preferentially absorbed. For lower degrees of plasticization, the craze growth is small and probably relaxation controlled.