Abstract: Effects of temperature on the flux of pure solvents through linear low-density polyethylene（LLDPE）membrane were investigated using a pervaporation setup. Permeation activation energies of five solvents were regressed from experimental data using Arrhenius equation. Equilibrium absorption data of each single solvent in the membrane were obtained from swelling experiment，from which the diffusion coefficients through the membrane of the five solvents at 25 ℃ were calculated. The permeation flux was found in the order of n-hexane > n-heptane > cyclohexane > acetone > n-methyl pyrrolidone（NMP），and the absorption capability in the membrane was in the order of NMP > cyclohexane > n-hexane > n-heptane > acetone.