Synthesis of Polyaniline (PANI) in Nano-Reaction Field of Cellulose Nanofiber (CNF), and Carbonization

• Main Authors: Yuki Kaitsuka, Noriko Hayashi, Tomoko Shimokawa, Eiji Togawa, Hiromasa Goto
• Format: Article
• Language: English
• Published: MDPI AG 2016-02-01
• Series: Polymers
• Subjects: cellulose nano-fiber; ESR; enzyme; polyaniline; solid state NMR; shape preserved carbonization (SPC)
• Online Access: http://www.mdpi.com/2073-4360/8/2/40

Polymerization of aniline in the presence of cellulose nano-fiber (CNF) is carried out. We used dried CNF, CNF suspension, and CNF treated by enzyme and ultra-sonification to obtain polyaniline (PANI)/CNF as a synthetic polymer/natural nano-polymer composite. The polymerization proceeds on the surface of CNF as a nano-reaction field. Resultant composites show extended effective π-conjugation length because CNF as a reaction field in molecular level produced polymer with expanded coil structure with an aid of orientation effect of CNF. Possibility of PANI β-pleats structure in molecular level of PANI on the CNF is also discussed. SEM observation showed that fine structure is easily obtained by combining PANI with CNF. Carbonization of PANI/CNF allows production of nano-fine form with shape preserved carbonization (SPC).