Novel Nanocomposite Structures Using Mechanical Attrition
Tulane University, US
novel nanocomposite structures, mechanical attrition
Mechanical Attrition (MA), also known as high energy ball milling or mechanical alloying, is a convenient top-down method for the formation of nanoparticles and nanocomposites. It involves the comminution of materials via brittle fracture during ball-ball and ball-wall impacts in a ball mill. In most instances, nanoscale structures with high surface areas can be produced. When heterogeneous materials are co-milled, and then further compacted using such techniques as hot pressing, highly-interfacial nanocomposite structures are formed in which bulk properties can be influenced by interfacial structure and chemistry. Two examples will be given of such hybrid nanocomposite structures formed via mechanical attrition: a polymer/ceramic membrane for fuel cell applications; and metastable polymer/polymer blends for structural applications. Finally, the extension of mechanical attrition to utilize the reactive surfaces on the nanoparticles (mechanochemistry) and the structure and photoelectronic properties of the resulting functionalized nanoparticles will be described.
Nanotech 2008 Conference Program Abstract