Effect of hydrocarbon chain lenght surfactants on particle size of SWy-1 montomorillonite suspensions - Valandro, Silvano Rodrigo; Lombardo, Patricia Coelho; Poli, Alessandra Lima; Sakoda, Clarice Emi; Cavalheiro, Carla Cristina Schmitt (International Journal Of Basic & Applied Sciences IJBAS-IJENS, 2013)