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超临界流体选择溶胀法制备含PDMS嵌段的聚合物纳米多孔薄膜
Authors
张治红
李磊
洪燕珍
陈财康
Publication date
15 September 2009
Publisher
Abstract
在含亲二氧化碳链段聚二甲基硅氧烷(PDMS)的嵌段聚合物中,用超临界二氧化碳选择溶胀的方法得到了闭合的纳米孔。采用反应离子刻蚀,可以将聚合物膜内部的多孔结构暴露出来,然后用原子力显微镜和扫描电镜表征。结果表明,纳米孔的形成不是简单的PDMS纳米微区溶胀,而是由相邻纳米微区在超临界流体处理过程中合并以后形成的。纳米孔的密度和孔径分别为7.0×1010/cm2和20nm
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Last time updated on 16/06/2016