Composite membranes for nanofiltration based on cellulose acetate and Si'O IND.2' - Soares, T P; Rodrigues Filho, Ubirajara Pereira; Nascente, P A P; Rezende, Maria Olimpia de Oliveira; Santana, Claudemir Gomes de; Silva, G A (Polymer Processing Society - PPS 2004 Americas Regional Meeting, 2004)