4(%3)3 - Ecole nationale supérieure de chimie de Montpellier

To avoid the probable clogging of the membrane by excess nanoparticles a minimumconcentration value was obtained using PCCS while still lying within the detection limit of PCCS (Figure –3.6). This is important since if the concentration is too low, it will be further lowered in the permeatesdue to which PCCS may not be able to detect enough nanoparticles in the solution.14001200y = 9,1471xR² = 0,9961000Average Kcps80060040020000 20 40 60 80 100 120 140 160Concentration ( x 10 -8 g.ml -1 )Figure – 3.6: Concentration vs Kcps calibration curve obtained for PS nanoparticles using Photon Cross CorrelationSpectroscopyAmount of Water (g)8765432100 1 2 3 4 5 6 7 8 9 10 11Time (min)Figure – 3.7: Amount of water passed through the membrane over the course of time with increasing concentrationof PS nanoparticles80