Modification of SWy-1 montmorillonite surfaces using cationic surfactants: particles size analyzed by dynamic light scattering - Leves, A. L. P.; Sakoda, C. E.; Gessner, Fergus; Neumann, Miguel Guillermo; Cavalheiro, Carla Cristina Schmitt (International Conference on Frontiers of Polymers and Advanced Materials - ICFPAM, 2009)