| abstract |
In one embodiment, a polymer blend of poly (vinyl acetate) (PVAc) and poly (acrylic acid) (PAA) is provided wherein the poly (vinyl acetate) based on the total weight of the blend comprises from about 20% to about 80% , And the poly (acrylic acid) is present in an amount of about 80 wt% to about 20 wt%. In another embodiment, fibers produced with the present polymer blend are provided, and this has cells therein. In another embodiment, there is provided a flavor release material comprising porous fibers embedded therein and at least one flavor agent disposed in a longitudinally extending core in the fiber. In another embodiment, there is provided a polymeric fibrous membrane containing hollow, porous fibers formed from the polymer blend described herein. In another embodiment, a filter is provided that contains the fibers of the present invention. In another embodiment, there is provided a process for producing the fibers of the present invention by adding a polymer to an extruder or blender and extruding or melt spinning the mixture into cell-containing fibers. |