Water-assisted fabrication of honeycomb structure porous film from poly(l-lactide)

Abstract

In this paper, porous films with a honeycomb structure were fabricated by evaporating a poly(L-lactide) solution in THF under humid conditions. The influencing factors on pattern formation were investigated, such as atmosphere humidity, solution concentration and the molecular weight. The pore sizes could be controlled by changing the film-formation conditions. The possible mechanism of pattern formation was discussed.