Depth Profiling of Acrylate Copolymer/Fluoro-Copolymer Immiscible Blends

Depth Profiling of Acrylate Copolymer/Fluoro-Copolymer Immiscible Blends
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丙烯酸酯共聚物/含氟共聚物不混溶共混物的深度分析

DOI：
10.1295/polymj.27.339
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Shigehiko Kobayashi
Shigehiko Kobayashi
中科院分区：
--
文献类型：
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作者：
Yoshihisa Kano;S. Akiyama;T. Kasemura;Shigehiko Kobayashi

文献摘要

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采用PAS-FTIR和ATR-FTIR分析了聚（2-乙基己基丙烯酸酯-co-丙烯酸-co-醋酸乙烯酯）P（2 EHA-AA-VAc）与聚（偏氟乙烯-co-六氟丙酮）P（VDF-HFA）不混溶共混物的深度分布。绘制了P（2 EHA-AA-VAc）/P（VDF-HFA）（50/50）、（30/70）和（10/90）共混物中P（VDF-HFA）组分（φ1）的积分表面过量与深度的关系曲线。P（2 EHA-AA-VAc）/P（VDF-HFA）共混物中的φ1随深度的增加而减小，因此可以认为P（2 EHA-AA-VAc）/P（VDF-HFA）共混物具有梯度材料（表面偏析结构）。此外，在距离表面几nm的深度处，进行XPS分析以获得更详细的表面信息。指出PAS-FTIR是一种非常有效的分析方法，可用于P（2 EHA-AA-VAc）/P（VDF-HFA）等不相容聚合物共混物的深度剖析。
In immiscible blends of poly(2-ethylhexyl acrylate-co-acrylic acid-co-vinyl acetate) P(2EHA-AA-VAc) with poly(vinylidene fluoride-co-hexafluoroacetone) P(VDF-HFA), depth profiling was carried out by PAS-FTIR and ATR-FTIR analyses. Integrated surface excesses of P(VDF-HFA) component (φ1) in blends were plotted against depth for P(2EHA-AA-VAc)/P(VDF-HFA) (50/50), (30/70), and (10/90) blends. In all blends, since φ1 decreased with increasing depth, it was expected that P(2EHA-AA-VAc)/P(VDF-HFA) blends would be gradient materials (surface segregation structures). Furthermore, at a few nm depth from the surface, XPS analysis was done to get more detailed information of the surface. We point out that PAS-FTIR is very effective analysis to get depth profiling in such immiscible polymer blends as P(2EHA-AA-VAc)/P(VDF-HFA).