Formation of fine metal particles in oligomeric amide prepared by degradation of nylon-11

Ultrafine Au particles dispersed composite was prepared by using Au and an oligomeric amide matrix. Morphology of the composite was investigated using TEM, SEM and AFM. The oligomeric amide was prepared by the degradation of nylon-11. A thin gold colored layer containing many ultrafine Au particles was formed on the matrix by vapor deposition of Au. After heating, the Au p articles dispersed into the matrix. Dispersed particles significantly affec ted the surface morphology of the matrix. AFM images of both the oligomeric amide and the Au deposited one, however, were not clear. They were differe nt from that of the melt-pressed nylon-11. Adsorbed water and softness of t he oligomeric amide affected the AFM resolution. The oligomeric amide was s upposed to hold the vapor-deposited Au as the ultrafine particle on/in the matrix due to its softening and the interaction with the gold particles. (C ) 1999 Elsevier Science Ltd. All rights reserved.