Creep deformation behavior of polymer materials with a 3D random pore structure: Experimental investigation and FEM modeling

This study investigates the creep deformation behavior of polyvinylidene difluoride (PVDF) with a 3D random pore structure. The test sample was a hollow fiber polymeric membrane with sub-micron-sized pores and an open cellular structure, which plays a critical role for water purification. Uniaxial tensile test was carried out for the polymeric membrane and it was found that the membranes underwent elasto-plastic deformation and creep...