Abstract
A new method for produsing replicas of pores in porous acrylic fibers has been developed for transmission electron microscopy. The method involved filling the pores with styrene followed by its polymerization. The resulting fibers impregnated with polystyrene were microtomed into sections of thickness of ca. 70nm, from which acrylic part was removed by extraction with dimethyl sulfoxide. This procedure resulted in pore replicas with minimum of artifacts. Application of this method to the wet spun acrylic fibers revealed morphology of the internal pore networks which were slightly oriented along the fiber axis.
