title: The Internal Structure of Macroporous Membranes and Transport of Surface-Modified Nanoparticles.
abstract: Understanding the morphological structure of membranes is essential to improve performance of membrane-based applications. In this paper, macroporous membranes were investigated and two methods introduced as an alternative for characterization of stereo-structure of the membranes. We combined the use of synchrotron X-ray nanotomography and small-angle X-ray scattering to examine the internal structure of cellulose acetate membranes with studies of the capture of surface-modified gold nanoparticles within these membranes. Finally, the morphological structures of macroporous membranes were visualized and their relationships with penetration tendency of surface-modified gold nanoparticles were explained.
authors.affiliation: Department of Mechanical Engineering,Pohang University of Science and Technology (POSTECH),San 31,Hyoja-dong,Pohang 790-784,South Korea.
authors.forename: Sang J
authors.initials: SJ
authors.lastname: Lee
authors.affiliation: Department of Mechanical Engineering,Pohang University of Science and Technology (POSTECH),San 31,Hyoja-dong,Pohang 790-784,South Korea.
authors.forename: Kiwoong
authors.initials: K
authors.lastname: Kim
authors.affiliation: Department of Mechanical Engineering,Pohang University of Science and Technology (POSTECH),San 31,Hyoja-dong,Pohang 790-784,South Korea.
authors.forename: Sungsook
authors.initials: S
authors.lastname: Ahn
keywords: X-ray nanotomography; gold nanoparticles; macroporous membrane structure; membrane characteristic