Preparation of honeycomb films from nitryl poly(ether ether ketone)s via water‐droplet templating |
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| Authors: | Pei Zhang Qingze Jiao Yun Zhao Ye Tian Qingyun Li Xiaolin Wang |
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| Affiliation: | 1. School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People's Republic of China;2. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China |
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| Abstract: | The fabrication of honeycomb‐patterned films from nitryl poly(ether ether ketone)s (PEEK‐NO2) in a high‐humidity atmosphere was reported in this article. PEEK‐NO2 was prepared through acid (nitric acid and sulfuric acid) nitration from poly(ether ether ketone)s (PEEK). The obtained polymer, which was characterized by Fourier transform infrared (FT‐IR), X‐ray diffraction (XRD), and differential scanning calorimetry (DSC) showed excellent solubility and thermal stability. Some influence factors on the pattern formation and the fabrication of the porous structure, such as the solution concentration, the solvent, and the atmosphere humidity, were investigated. The results showed that with the increase of the solution concentration, the aperture of the film diminished gradually; the lower the solvents´ boiling point were, the smaller the films´ apertures were and the more regular the pores´ arrange; only under high‐humidity circumstances could obvious and ordered honeycomb films be formed. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 |
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| Keywords: | poly(ether ether ketone)s (PEEK) nitryl poly(ether ether ketone)s (PEEK‐NO2) high humidity honeycomb porous structure |
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