Manufacturing Industry
Smart adhesive has an on-off switch. (Down the Line).
Assembly, March, 2003 by Weber, Austin
Two scientists at Lehigh University (Bethlehem, PA) have developed a polymer-aluminum interface whose adhesion strength can be controlled by temperature. Gregory Ferguson, Ph.D., associate professor of chemistry, and Sureurg Khongtong, Ph.D., now a lecturer in polymer and rubber technology at Walailak University in Thailand, developed the "smart glue" while Khongtong was earning his Ph.D. at Lehigh.
Ferguson and Khongtong modified a 1-4 polybutadiene, a standard synthetic rubber, by treating it with aqueous permanganate, an oxidizing agent that triggers formation of carboxylic acids and other functional groups attracted to aluminum oxide. At room temperature, the molecular chains of the treated rubber extend and hook onto the metal oxide layer, Ferguson says....
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