以过氧化苯甲酰(BPO)作引发剂,通过溶液接枝聚合法把苯乙烯/丙烯酸同时接枝到原硅酸钠改性的聚偏氟乙烯(PVDF)膜上,磺化后得到聚偏氟乙烯接枝苯乙烯/丙烯酸磺酸(PVDF-g-PS/ PASA)膜.FTIR分析表明:苯乙烯和丙烯酸接枝到PVDF膜上;环境的相对湿度在20%～80%范围内,对PVDF-g-PS/ PASA膜电导率的影响基本不变,并达到0.0198S·cm-1,40℃保水率达99%.将膜应用于CO传感器中,传感器电流响应信号与CO气体浓度具有较好的线性关系.
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