کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1401311 | 984690 | 2006 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and characterization of copolymers based on styrene and partially fluorinated acrylates Synthesis and characterization of copolymers based on styrene and partially fluorinated acrylates](/preview/png/1401311.png)
Copolymers of styrene and fluorinated acrylate monomers with F -octylalkyl, F(CF2)8(CH2)n′F(CF2)8(CH2)n′ side groups were prepared by free radical polymerization. Thermal behaviour of the resulting polymers was investigated by DSC and TGA. Even if at the macroscopic scale the polymers surfaces are homogeneous and clear, the analysis indicates that all samples exhibit two glass transitions temperatures. This discontinuity may be regarded as an indication for microphase separation of fluorine-rich and polystyrene-rich microphases. Water and hexadecane contact angles measurements show that these polymers are quite surface active in the solid state. Surface and bulk organizations were investigated by XPS analysis. A strong correlation between bulk organization and surface properties of the polymers could be established. Preferential adsorption of fluorinated segments at the material surface were more pronounced than expected in the bulk.
Journal: European Polymer Journal - Volume 42, Issue 3, March 2006, Pages 702–710