采用经典St(o)ber方法制备了微米固体SiO2(μ-SiO2)及Ag+修饰SiO2颗粒(Ag+-SiO2).以纳米气相SiO2 (n-SiO2)、μ-SiO2以及Ag+-SiO2为填充物,分别制备了PEBAX/PAN复合膜及三种填充型复合膜.XRD、FTIR分别考察了修饰前后颗粒的晶体结构情况及成分,SEM表征了Ag+-SiO2及膜的形貌结构.另外,还研究考察了膜在噻吩/正庚烷溶液中的溶胀情况,结果显示:随料液噻吩含量的增加溶胀度增大,膜溶胀度大小顺序为:Ag+-SiO2填充型复合膜(PMSA)＞n-SiO2填充型复合膜(PMS1)＞μ-SiO2填充型复合膜(PMS2)＞复合膜(PM).渗透汽化实验考查了上述四种膜分离噻吩能力,结果表明:三种填充型复合膜分离因子得到提高,但渗透通量有所降低,其中PMSA分离性能最佳.在填充量为5％、温度为30℃,料液噻吩质量分数为1×10-3时,PMSA的分离因子为4.2,渗透通量为2.8 kg/(m2·h).
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