Siam Physics Congress 2015

Polysulfone Gas Separation Membrane: Effect of Evaporation Time on Morphology and Mechanical Strength

21 May 2015, 10:15

15m

Phokeethra 1

Oral presentation Surface, Interface and Thin Film Surface, Interface and Thin Films

Speaker

Mr Chalad Yuenyao (Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla, THAILAND 90112; Thailand Excellence Center in Physics (ThEP), Bangkok, THAILAND 10400)

Description

Preparing of polysulfone (PSF) gas separation membranes by dry/wet phase inversion technique were conducted in this work. The effect of evaporation time (ET) on the morphology, structure and gas separation performance of produced PSF membranes was investigated. The ET was varied for 0, 10, 30, 60, and 120 s. Morphology and structure of membrane samples were analyzed through the SEM micrograph and Carnoy version 2.0 software while the gas separation performance was evaluated in term of gas permeation. Mechanical strength in term of modulus was measured by DMTA. Results showed that the defect-free and dense top skin layer asymmetric membranes were produced. The top skin thickness was increased with an increment of ET from 0 to 120 s. However, solvent type was influenced to the skin layer thickness, as well. The CO2 and CH4 permeation rate decreased when ET was increased.