Composite Made from Aramid Fibres and Graphene

  • Author: ChemistryViews.org
  • Published: 15 September 2019
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Chemical Communications/Royal Society of Chemistry
  • Associated Societies: Royal Society of Chemistry (RSC), UK
thumbnail image: Composite Made from Aramid Fibres and Graphene

Aromatic polyamides, or aramids, are a type of polymer that can form strong fibers used, e.g., in bulletproof vests. Graphene is another material known for its unusual mechanical strength. Combining the two could lead to fibers with improved mechanical and electrical properties. Incorporating graphene into polymers is usually challenging due to a lack of interactions, but the aromaticity of aramids could provide ample π–π interactions.


The direct exfoliation of graphite by the superacid chlorosulfonic acid (CSA) is an effective, scalable method for the production of graphene. While many other polymers are destroyed by CSA, aramids such as poly(p-phenylene terephthalamide) (PPTA) is simply dissolved. This allowed Steve G. Yeates, Nigel S. Scrutton, University of Manchester, UK, and colleagues to co-process PTTA with graphene in CSA and spin the resulting composite material into fibers.


The team synthesized PPTA from benzene-1,4-dicarbonyl dichloride and benzene-1,4-diamine. Then they dispersed graphite nanoplatelets in CSA and added the PPTA. The resulting solutions were wet-spun into a water coagulation bath using a custom-made spinning rig to obtain the desired composite fibers. The graphene is well-dispersed in the fibers. The mechanical properties of the fibers are not as good as expected due to a release of gases during fiber production that leads to porosity. However, according to the researchers, further optimization of the process could overcome these issues.


 

Article Views: 871

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