Surfaces of semi-fluorinated block copolymers studied using NEXAFS

被引：10

作者：

Genzer, J ^{[1
]}

Sivaniah, E ^{[1
]}

Kramer, EJ ^{[1
]}

Wang, J ^{[1
]}

Korner, H ^{[1
]}

Xiang, ML ^{[1
]}

Yang, S ^{[1
]}

Ober, CK ^{[1
]}

Char, K ^{[1
]}

Chaudhury, MK ^{[1
]}

Dekoven, M ^{[1
]}

Bubeck, RA ^{[1
]}

Fischer, DA ^{[1
]}

Sambasivan, S ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

APPLICATIONS OF SYNCHROTRON RADIATION TECHNIQUES TO MATERIALS SCIENCE IV | 1998年 / 524卷

关键词：

D O I：

10.1557/PROC-524-365

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The molecular orientation within a surface liquid crystalline layer made up of semifluorinated side-groups [-CO-(CH2)(x-1)-(CF2)(y)F] (SF groups) attached to the isoprene block of a styrene-isoprene diblock copolymer was determined by analyzing the partial electron yield C-edge NEXAFS signal. The results show that in contrast to the bulk, where the SF groups lie parallel to the diblock copolymer lamellae and thus parallel to the surface, the surface SF groups make an average angle with the surface normal of between 29 and 46 degrees depending on x and y.

引用

页码：365 / 370

页数：6