5 years ago

A Coating-Free Nonfouling Polymeric Elastomer

A Coating-Free Nonfouling Polymeric Elastomer
Shaoyi Jiang, Harihara S. Sundaram, Timothy Fujihara, Payam Farahani, Erik J. Liu, Hsiang-Chieh Hung, Fang Sun, Peng Zhang, Xiaojie Lin, Andrew Sinclair, Bowen Li, Caroline Tsao, Tao Bai, Priyesh Jain, Kan Wu
Medical devices face nonspecific biofouling from proteins, cells, and microorganisms, which significantly contributes to complications and device failure. Imparting these devices with nonfouling capabilities remains a major challenge, particularly for those made from elastomeric polymers. Current strategies, including surface coating and copolymerization/physical blending, necessitate compromise among nonfouling properties, durability, and mechanical strength. Here, a new strategy is reported to achieve both high bulk mechanical strength and excellent surface nonfouling properties, which are typically contradictory, in one material. This is realized through a nonfouling polymeric elastomer based on zwitterionic polycarboxybetaine derivatives. By hiding both charged moieties of the zwitterionic compounds with hydrocarbon ester and tertiary amine groups, the bulk polymer itself is elastomeric and hydrophobic while its superhydrophilic surface properties are restored upon hydrolysis. This coating-free nonfouling elastomer is a highly promising biomaterial for biomedical and engineering applications. A stable nonfouling polymeric elastomer is demonstrated. This elastomer, based on zwitterionic polycarboxybetaine derivatives, requires no hydrophilic surface coating to achieve excellent nonfouling surface properties. By hiding both charged moieties of the zwitterionic compounds, a hydrophobic elastomer is fabricated; hydrolysis of its outermost surface then restores superhydrophilic and nonfouling surface properties, while maintaining excellent bulk mechanical characteristics.

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

DOI: 10.1002/adma.201700617

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.