3 years ago

Chemical modification and structural rearrangements of polyketone-based polymer membrane

Chemical modification and structural rearrangements of polyketone-based polymer membrane
Fabrizio Girardi, Emanuela Callone, Narges Ataollahi, Vito Noto, Keti Vezzù, Paolo Scardi, Rosa Maggio, Elisa Cappelletto
Alternating polyketones constitute a very interesting class of polymers, which can be modified for the preparation of functional polymers. The chemical modification of polyketone using 1,2-diaminopropane was used to prepare a conductive membrane. This paper is focused on the synthesis and structural rearrangements of polyamine for preparing anion-exchange membranes by the solvent casting technique. According to the Paal-Knorr mechanism, 1,4-dicarbonyl of polyketone reacts with 1,2-diaminopropane to form a pyrrole ring along the polyketone backbone. In addition, the so-modified polyamines can undergo structural rearrangements to form N-substituted pyrrole crosslinked with dihydropyridine units. The conversion degree and the N content are quite low. The pathway reactions have been proposed on the basis of 1H-NMR, ultraviolet–visible, and Fourier transform infrared results. Scanning electron microscopy, differential scanning calorimetry, and X-ray diffraction techniques were used to study the morphological, thermal, and structural characteristics of the modified polyketone, as well as the correspondoing membrane. The experimental results indicated that the membrane is a potential candidate for energy conversion technology. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2017

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45485

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.