A melt-extrudable polymeric strand with altered physical properties formed by extruding an emulsion comprising a melt-extrudable polymer and an immiscible component while subjecting the emulsion to ultrasonic energy. In one embodiment, a melt-extrudable polymeric strand has a plurality of fissures...http://www.google.ca/patents/US5801106?utm_source=gb-gplus-sharePatent US5801106 - Polymeric strands with high surface area or altered surface properties
