Novel biosensor films based on chitosan

• Published in: Materials letters Vol. 167; pp. 47 - 49
• Main Authors: Nesic, Aleksandra R., Onjia, Antonije, Ostojic, Sanja B., Micic, Darko M., Velickovic, Sava J., Antonovic, Dusan G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.03.2016
• Subjects: Biomaterials; Biosensor; Biosensors; Casting; Chitosan; Low cost; Membranes; Poly(itaconic acid); Polymer complex; Sensors; Thermal stability; Uptakes; Casting; Poly(itaconic acid); Chitosan; Biosensor; Polymer complex; Biomaterials
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2015.12.124

Films of chitosan and poly(itaconic acid) in various different ratios have been prepared by membrane casting. The enhancement in the proton conductivity and uptake of water was observed as the content of poly(itaconic acid) in film increased. The proton conductivity of chitosan/poly(itaconic) films was comparative with commercially used synthetic sensor Nafion 117. Films showed thermal stability up to 185°C. The proposed experiment might open up a new possibility for use of chitosan/poly(itaconic acid) films as a biosensors due to their advantages: low cost, simple preparation and good conductive sensitivity. •Synthesis of the complexes based on chitosan and poly(itaconic acid).•Characterization of films by FTIR, thermogravimetry and proton conductivity.•Films possess adequate thermal stability.•Films show comparative proton conductivity with Nafion 117.