European Polymer Journal
European Polymer Journal
5 years ago

Grafted polybenzimidazole copolymers bearing polyhedral oligosilsesquioxane pendant moieties

Grafted polybenzimidazole copolymers bearing polyhedral oligosilsesquioxane pendant moieties
A series of N-POSS-substituted polybenzimidazole (POSS-g-PBI) bearing polyhedral oligomeric silsesquioxane (POSS) pendantmoieties were synthesized. X-ray powder diffraction analyses and Scanning electron microscope characterization revealed that POSS was dispersed well in the polybenzimidazole matrix. The grafted POSS pendantmoieties can break the PBI intermolecular face-to-face packing and hydrogen bonding. As a result, POSS-g-PBIs showed better solubility than the pure polybenzimidazole because of less tight molecular chain packings. The intrinsic viscosity of POSS-g-PBI in a DMSO solution decreased with increasing amounts of grafted POSS in the polybenzimidazole molecular chains. The mechanical properties, including Young’s modulus, breaking strength and elongation at break, increased by introducing POSS into the polybenzimidazole backbone. Contact angle tests showed that the surface of POSS-g-PBI became hydrophobic with increasing amounts of grafted POSS. POSS-g-PBIs also exhibited good thermal stability.

Publisher URL: www.sciencedirect.com/science

DOI: S0014305717302471

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.