Image enhancement of polyethersulfone ultrafiltration membrane surface structure for atomic force microscopy


Por: Fritzsche A.K., Arevalo A.R., Moore M.D., Weber C.J., Elings V.B., Kjoller K., Wu C.M.

Publicada: 1 ene 1992
Resumen:
The surface topography and pore structure of ultrafiltration membranes can be investigated with atomic force microscopy. In this study, it was found that the substitution of ethanol for water as the immersion medium improved the resolution of the fine structure of 10K polyethersulfone ultrafiltration membranes. Pores in the membrane surface from 7 to 9 nm in diameter were measured, which coincides with the range expected for 10,000 molecular weight cutoff (MWCO) ultrafiltration membranes. It is believed that this image enhancement results from increased damping and concomitant noise reduction resulting from the higher viscosity of ethanol in contrast to water.

Filiaciones:
Fritzsche A.K.:
 Cuno Separations Systems Division, 50 Kerry Place, Norwood, Massachusetts, 02062, United States

Arevalo A.R.:
 Cuno Separations Systems Division, 50 Kerry Place, Norwood, Massachusetts, 02062, United States

Moore M.D.:
 Cuno Separations Systems Division, 50 Kerry Place, Norwood, Massachusetts, 02062, United States

Weber C.J.:
 Cuno Separations Systems Division, 50 Kerry Place, Norwood, Massachusetts, 02062, United States

Elings V.B.:
 Digital Instruments, Inc., 6780 Cortona Drive, Santa Barbara, California, 93117, United States

Kjoller K.:
 Digital Instruments, Inc., 6780 Cortona Drive, Santa Barbara, California, 93117, United States

Wu C.M.:
 Digital Instruments, Inc., 6780 Cortona Drive, Santa Barbara, California, 93117, United States
ISSN: 00218995
Editorial
JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA, Estados Unidos America
Tipo de documento: Article
Volumen: 46 Número: 1
Páginas: 167-178
WOS Id: A1992JJ00900016