Abstract
As a reinforcement material, negatively charged cellulose nanocrystal (CNC) has worse compatibility with positively charged polymer matrixes like chitosan due to Coulomb and possible depletion interaction. In this paper, we develop an eco-friendly biological–chemical approach that involves the use of O2/laccase/TEMPO system and Girard’s reagent T (GT) to oxidize and cationize the surface of CNC, that completely avoiding the formation of precipitation and/or aggregation during the preparation of CNC/chitosan bio-nanocomposites. The cross-sectional morphology of various nanocomposite films was observed by scanning electron microscopy. The addition of cellulose nanocrystals increased tensile strength (42%), decreased elongation at break (from 5.60 to 2.92%) and swelling degree (from 134 to 101%). This work offers a new path for the production of highly compatible CNC/cationic polymer composites which is different from commonly-used high-speed homogenization or stirring.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
