Journal of Applied Polymer Science
Journal of Applied Polymer Science
4 years ago

Nonisocyanate thermoplastic polyurethane elastomers based on poly(ethylene glycol) prepared through the transurethanization approach

Nonisocyanate thermoplastic polyurethane elastomers based on poly(ethylene glycol) prepared through the transurethanization approach
Soumaya Nouigues, Fabrice Burel, Nasreddine Kébir, Pierre Moranne
Nonisocyanate thermoplastic polyurethane elastomers (NIPUs) were synthesized with the transurethanization approach. Dimethyl dicarbamates (DCs) were prepared by the reaction of a diamine with an excess of dimethyl carbonate in the presence of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as a catalyst. Then, the polymers were obtained under neat conditions through the reaction of DC with polyethyleneglycol of average molecular weight of 1500 g/mol (PEG1500) at variable temperatures in the presence of different amounts of 1,4-butanediol. TBD, dibutyltin dilaurate (DBTL), and K2CO3 were tested as catalysts. TBD and DBTL seemed to be more efficient than K2CO3 in the temperature range 140–160 °C. The obtained materials exhibited molecular weight values (Mw) up to 10,000 g/mol and thermal stabilities above 200 °C. The soft segments displayed glass-transition temperature values that varied from −49 to −1 °C and melting temperature values that varied from 38 to 49 °C. Compared to polyurethane analogs, the NIPUs exhibited higher crystallinities and thermal stabilities. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44991.

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

DOI: 10.1002/app.44991

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.