Study of the surface character as responsible for controlling interfacial forces at membrane–feed interface

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

“…Figure 7 shows the comparison of the theoretical and experimental water diffusivity for varying PEBAX/KET compositions. From the comparison with the experimental data of Gugliuzza et al, [10,13] an acceptable agreement with the calculated diffusion coefficients is observed, taking into account the limitations of the method for calculating the diffusion coefficients. The TST method overestimates the diffusivity of H 2 O, and, on the other hand, MD gives a better reproduction of the experimental water diffusivity than TST only for the pure PEBAX system, because the introduction of an additive like KET with rigid aromatic rings leads to a reduction of the chain mobility, as seen in the previous section.…”

“…Adding organic molecules with different chemical structures to a polymer matrix generally implies a modification of the system morphology, the chemical composition and even the physico-chemical properties change, influencing the transport through the membranes [8][9][10]. Previously, the effects of the addition of N-ethyl-o/p-toluene sulfonamide (KET) molecules on the gas permeation properties were investigated [11][12][13][14][15][16][17]. A clear trend of the influence of additives on gas permeability was observed: The gas transport properties of PEBAX improved with increasing additive concentration up to a certain value.…”

Evaluation of CO2 permeation through functional assembled mono-layers: Relationships between structure and transport

“…All assembled layers have shown, on relevant length scale, a good miscibility and compatibility, as the thermal [2] and the infrared analysis [22,23] have confirmed. Fig.…”

Smart Membrane Surfaces: Wettability Amplification and Self‐Healing

“…Abrupt changes in the surface chemistry and morphology can aff ect the properties of materials used, determining the fi nal performance of a membrane process [1]. Fouling, fogging, cleaning, transport, transcription, catalysis, conversion, corrosion, abrasion, regeneration and healing are some of the most frequent events, which regard with the surface of many materials used in manufacturing industry, textiles, architecture, automotive, food-processing, environment, pharmaceutics, biomedicine and chemicals [2].…”