摘要
制备了超支化聚硅氧烷,并以超支化聚硅氧烷膜(HPSi O-c-PDMS)为中间层、聚硅氧烷(VTES-c-PDMS)为表层选择层,制备了具有多层结构的复合膜,并对其进行静态接触角和SEM表征,系统研究了PDMS分子量、料液温度对渗透汽化性能的影响。结果表明,随着表层分离层PDMS分子量的增加,多层复合膜的通量降低,而分离因子上升;随着料液温度升高,多层复合膜的通量和分离因子上升明显。
Hyperbranehed polysiloxane was prepared to fabricate a pervaporative membrane （HPSiO-c- PDMS） as a intermediate layer of a new type multilayer composite membranes which contain a selective layer （VTES-c-PDMS）. The morphology of multilayer composite membranes was characterized through static contact angle and SEM. In addition, the effect of molecular weight of PDMS, feed temperature on PV performances was studied. The results indicated that with increasing of the molecular weight of PDMS in selective layer, separation factor of multilayer composite membranes increased while the flux decreased and with increasing of feed temperature, both separation factor and flux have a remarkable improve.
出处
《应用化工》
CAS
CSCD
北大核心
2015年第5期845-849,共5页
Applied Chemical Industry
基金
江苏省产学研前瞻性联合研究项目(BY2013015-28)
关键词
超支化
多层复合膜
渗透汽化
hyperbranched
multilayer composite membranes
pervaporation
