A sacrificial-interlayer technique for single-step coating preparation of highly permeable alumina membrane
A sacrificial-interlayer technique for single-step coating preparation of highly permeable alumina membrane
复制标题
一种一次性涂层制备高渗透氧化铝膜的牺牲夹层技术
DOI：
10.1016/j.ceramint.2016.09.206
复制
发表时间：
2017-01-01
影响因子：
5.2
通讯作者：
Wu, Jianqing
中科院分区：
文献类型：
--
作者：
Qin, Wu;Peng, Cheng;Wu, Jianqing
采用化学中间层技术，在制备好的氧化铝载体上一步制备了高渗透氧化铝微滤膜。牺牲层由聚乙烯醇（PVA）-硼酸络合交联而成。将覆盖有牺牲夹层的支撑体浸入成膜浆料中。得到了由绿色陶瓷膜、牺牲中间层和支撑体组成的夹层结构。在1200 ℃下烧结2小时的膜具有0.24 gm的平均孔径和1410 L m（-2）h（-1）bar（-1）的水渗透性，其显著高于用其它方法制备的膜。
A single-step coating preparation of highly permeable alumina microfiltration membrane on as-prepared alumina supports has been achieved by using a sacrificial-interlayer technique. The sacrificial interlayer was derived from polyvinyl alcohol (PVA)-boric acid complexation and crosslinking. The supports covered with the sacrificial interlayer was dipped into the membrane forming slurry. The sandwiched structures including the green ceramic membrane, the sacrificial interlayer and the support were obtained. The membrane sintered at 1200 degrees C for 2 h has an average pore size of 0.24 gm and a water permeance of 1410 L m(-2) h(-1) bar(-1) which is significantly higher than that of the membranes prepared with other methods.