Polypropylene fibers and devices that include a fatty acid monoglyceride added to the polypropylene as a melt additive are described in this recently issued patent. A hydrophilic enhancer material can be advantageously added to the polypropylene as a melt additive to enhance the hydrophilicity of the fibers and devices. An antimicrobial enhancer material can be added to the fibers to enhance the antimicrobial activity.