Controlled Fluorination of Polymers

  • Author: ChemistryViews.org
  • Published: 21 August 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Nature Communications/Nature Publishing Group
thumbnail image: Controlled Fluorination of Polymers

Fluorinated polymers have a range of useful properties, such as high stability, low reactivity, and a low friction coefficient (which allows their use in non-stick pans). However, they can be difficult to process due to their mechanical properties. A copolymerization with non-fluorinated polymers can help with this issue.


While the copolymerization of fluorinated alkenes with nonpolar monomers is often successful, their reactivity towards polar monomers such as acrylonitrile or acrylates is much poorer. One way around this is the direct partial fluorination of polymers, but this often requires very harsh reagents and conditions.


Chaozhong Li, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, and Ningbo University of Technology, China, and colleagues have developed a method for the synthesis of poly(vinyl fluoride-co-acrylic acid) copolymers which works by partially fluorinating poly(acrylic acid) in a controlled manner. The team treated poly(acrylic acid) with AgNO3 as a catalyst and Selectfluor (1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)) as a fluorine source in aqueous solution at room temperature. The resulting decarboxylative fluorination gives the desired products in high yields.


By varying the amount of amount of Selectfluor (between 10 mol % and 90 mol %), the researchers were able to control the percentage of fluorinated monomers in the final product. The reaction conditions are mild and the silver(I) ions can be easily removed.


 

Article Views: 654

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH