RADIATION GRAFTING OF STYRENE/MALEIC ANHYDRIDE OR STYRENE/DIMETHYLAMINO ETHYL METHACRYLATE BINARY SYSTEMS ONTO POLYTETRAFLUOROETHYLENE POROUS MEMBRANES
YAN Yu, YI Min, ZHAI Maolin, HA Hongfei. RADIATION GRAFTING OF STYRENE/MALEIC ANHYDRIDE OR STYRENE/DIMETHYLAMINO ETHYL METHACRYLATE BINARY SYSTEMS ONTO POLYTETRAFLUOROETHYLENE POROUS MEMBRANES[J]. Acta Polymerica Sinica, 2004,(6):871-876.
YAN Yu, YI Min, ZHAI Maolin, HA Hongfei. RADIATION GRAFTING OF STYRENE/MALEIC ANHYDRIDE OR STYRENE/DIMETHYLAMINO ETHYL METHACRYLATE BINARY SYSTEMS ONTO POLYTETRAFLUOROETHYLENE POROUS MEMBRANES[J]. Acta Polymerica Sinica, 2004,(6):871-876.DOI:
Radiation-induced grafting of binary grafting systems of styrene (St)/maleic anhydride (MAn) or St/dimethylamino ethyl methacrylate (DMAEMA) onto polytetrafluoroethylene (PTFE) porous membranes was studied.Grafting was carried out using γ-radiation from a 60Co source at room temperature.The effects of absorbed dose
dose rate
the initial comonomer concentration
and the molar ratio of both monomers in the grafting solution on the degree of grafting were investigated.The degree of grafting was found to be strongly dependent upon the grafting conditions.The effect of the reactivity ratio of two monomers on the degree of grafting
the composition and characteristics of the grafted film were measured and discussed.There is a synergistic effect in St/MAn binary system
but a weak antagonistic effect in St/DMAEMA system.The grafted PTFE porous membranes can be used after sulfonation as proton exchange membranes for proton exchange membrane fuel cell.