POLYMER FRICTION-TRANSFER LAYERS AS ORIENTING SUBSTRATES

A variety of polymers were investigated as candidates for the formatio n of oriented layers by friction transfer. Only polyethylene, the liqu id-crystalline Vectra(R) and fluorinated ethylene-propylene copolymer were found to yield oriented transfer layers. These layers, in turn, w ere found to induce the oriented growth a variety of species deposited onto them from the melt, solution or vapor phase. The present orienta tion-inducing friction-transfer layers, however, were found to be infe rior to those of poly (tetrafluoroethylene) [PTFE], described previous ly. (C) 1994 John Wiley & Sons, Inc.