Marialuigia Macchione

Pure And Modified Co‐poly(amide‐12‐b‐ethylene oxide) Membranes For Gas Separation Studied By Molecular Investigations

A combined experimental and theoretical study has been performed to investigate transport properties in a pure and modified poly(amide‐12‐b‐ethylene oxide) (PEBAX®2533) block copolymer membrane with N‐ethylo,p‐toluenesulphonamide (KET) as additive molecules. MD simulations using COMPASS force field, Gusev‐Suter Transition State Theory (TST) and Monte Carlo methods have been used. Bulk models of PEBAX®2533 and PEBAX/KET in different copolymer/additive compositions have been assembled and analysed to evaluate gas permeability and the morphology to characterize structure‐performance relationships.

Analysis of the Solubilisation Power of Detergents by Photochromic Probe

The ability of micelles to solubilize organic substances is a property of fundamental importance in many practical applications, such as in detergents. In this work, a new method to determine the solubilisation power of SDS, in terms of the amount of captured organic substance, was used for the first time. A photochromic probe has been dispersed into an organic phase and its incorporation in the micellar system was monitored. The volume of the organic phase entrapped within the micellar hydrophobic core has been measured by the absorbance peak of the dye sensitizer. In our work, three organic compounds were used to determine the amount of organic solvent solubilised by SDS/water system.