Perpendicular Domain Orientation of Poly(styrene-block-methylmethacrylate (PS-b-PMMA) Thin Films Produced on Zinc Oxide Nanoparticle Layer

IF 1 4区 化学 Q4 POLYMER SCIENCE
A. Talla, Z. N. Urgessa, J. R. Botha
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引用次数: 0

Abstract

Perpendicular di-block copolymer domains are produced when poly(styrene-block-methylmethacrylate (PS-b-PMMA) is spun onto a disordered layer of zinc oxide nanoparticles, followed by thermal annealing in vacuum. The ZnO layer creates a rough surface on the silicon substrate, inducing vertical cylinders of PMMA. The subsequent development of a PS template is illustrated. The wet etching process removed the vertically oriented PMMA nanodomains in the PS matrix. The morphology of the PS mask showed ordered nanopores with diameters around 20 nm. The effect of surface roughness and di-block film thickness on forming perpendicular cylindrical domains of PS-b-PMMA is analyzed. For a typical thickness of PS-b-PMMA film around 33 nm, a specific surface roughness parameter of 0.07 is obtained. These results are compared with other reports on this topic.

Abstract Image

Abstract Image

氧化锌纳米粒子层上生成的聚苯乙烯-嵌段-甲基丙烯酸甲酯(PS-b-PMMA)薄膜的垂直畴取向
摘要将聚苯乙烯嵌段甲基丙烯酸甲酯(PS-b-PMMA)纺到无序的氧化锌纳米颗粒层上,然后在真空中进行热退火,可产生垂直的二嵌段共聚物畴。氧化锌层在硅基底上形成一个粗糙的表面,从而诱导出垂直圆柱状的 PMMA。图示为 PS 模板的后续开发过程。湿法蚀刻工艺可去除 PS 基质中垂直定向的 PMMA 纳米域。PS 掩膜的形态显示出直径约为 20 纳米的有序纳米孔。分析了表面粗糙度和双嵌段薄膜厚度对形成 PS-b-PMMA 垂直圆柱形畴的影响。对于厚度约为 33 nm 的 PS-b-PMMA 薄膜,得到的特定表面粗糙度参数为 0.07。这些结果与其他相关报告进行了比较。
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来源期刊
Polymer Science, Series A
Polymer Science, Series A 化学-高分子科学
CiteScore
1.70
自引率
0.00%
发文量
55
审稿时长
3 months
期刊介绍: Polymer Science, Series A is a journal published in collaboration with the Russian Academy of Sciences. Series A includes experimental and theoretical papers and reviews devoted to physicochemical studies of the structure and properties of polymers (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed. Online submission via Internet to the Series A, B, and C is available at http://polymsci.ru.
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