Mohsen Farsi - Department of chemical engineering, science and Research Branch, Islamic Azad university, Tehran, Iran
Amir Heidarinasab - Department of chemical engineering, science and Research Branch, Islamic Azad university, Tehran, Iran
Bizhan Honarvar - Department of chemical engineering, Marvdasht Branch, Islamic Azad university, Marvdasht , Iran
Mehdi Arjmand - Department of chemical engineering, science and Research Branch, Islamic Azad university, Tehran, Iran

In this research blending of PDMS (polydimethylsiloxane) and PES (poly ether sulfonic) membranes with crosslinking TEOS (tetra ethyl ortho silicate) as silica Nano particles, ammonia as catalyst/inducer, and span 80 as surfactant. in this research ,variation of crosslinking agent (TEOS) upon crosslinking density (ve),swelling degree (MsD),%swelling by volume, density of membrane specimen (ρp),volume fraction of rubber phase(v2) and number average molecular weight between crosslink's (Mc),is studied. It was observed that with increase weight of the crosslinking agent, ve , ρp and v2, is increase and MsD , %swelling by volume and Mc is decrease.

PDMS, PES, TEOS, crosslinking density, crosslinking agent, swelling degree