ATR-FTIR and SEM Gradient Study of Poly(2-ethylhexyl acrylate)/Poly (vinylidene fluoride-co-hexafluoro acetone) Blends |
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| Authors: | Yoshihisa Kano Saburo Akiyama Hironari Sano Hiroshi Yui |
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| Affiliation: |
a Department of Chemical Science and Technology, Faculty of Technology, Tokyo University of Agriculture and Technology, Tokyo, Japan
b Mitsubishi Kagaku Co. Ltd., Yokkaichi-shi, Mie, Japan
c AMCO Enterprises Incorporated, Tokyo, Japan |
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| Abstract: | The segregation structure and the gradient structure of poly(2-ethylhexylacrylate) (P2-EHA)/poly(vinylidene fluoride-co-hexafluoro acetone) P(VDF-HFA)] blends were confirmed by ATR-FTIR and SEM. For the P2-EHA/P(VDF-HFA) (50/50) blend, the P(VDF-HFA) and P2-EHA layers were observed at the free surface side and bottom side, respectively. The gradient structure was obtained for the P2-EHA/P(VDF-HFA) (30/70) blend. The domain morphology of a cross section of the P2-EHA/P(VDF-HFA) (50/50) blend was dramatically changed by the thickness of the blend film. Finally, we propose that the segregation structure and gradient structure formed in P2-EHA/ P(VDF-HFA) blends were caused by surface tension difference, rate of phase separation, rate of solvent evaporation, and molecular weight difference. |
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| Keywords: | Segregation gradient structure poly(2-ethylhexylacrylate) fluoro-copolymer blends rate of solvent evaporation |
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