Solvent-induced stresses in glassy polymer: Elastic model

摘要

The solvent-induced stresses in glassy polymers were investigated. The mass transport accounts for case I, case II, and anomalous transport. case I transport is attributed to the concentration gradient, whereas case 11 transport is attributed to stress relaxation. Anomalous transport is the mixture of case I and case II . Both one-side and two-side mass transports with the boundary condition of constant surface concentration are considered. The stresses and longitudinal displacement arising from the mass transport are formulated based on the linear elasticity theory. The maximum stress is always located at the surface at the initial time.