GT70
Symposium: S01 - General Session Oral Presentation
Gas foaming as an imprinting technique
Orsi Silvia (1), Di Maio Ernesto (2)*, Netti Paolo Antonio (3), Iannace Salvatore (4)
(1) Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia - Italy - Naples - Italy, (2) DICMAPI, University of Naples Federico II - Italy - Naples - Italy, (3) DICMAPI, University of Naples Federico II and CRIB - Naples - Italy, (4) Institute for Polymers, Composites and Biomaterials - CNR - Naples - Italy
The gas foaming technology has been utilized as a tool for imprinting, at a micron and submicron scale, a desired pattern on polymeric film and particles. Carbon dioxide and nitrogen up to pressures of 14 MPa were used as blowing agents for polystyrene films and spheres with thickness or diameter ranging from 200 nm to 50 um. Focused Ion Beam-Scanning Electron Microscopy, Transmission Electron Microscopy and Confocal Microscopy were used to assess the occurrence of bubble within the film and the particles, and to assess the pattern, the shape, the dimension and the closed/open feature of the achieved porosity.