Further improvement of flame retardancy of polyaniline-deposited paper composite through using phytic acid as dopant or co-dopant

• Published in: Carbohydrate polymers 2015-01, Vol.115, p.670-676
• Main Authors: Zhou, Yang, Ding, Chunyue, Qian, Xueren, An, Xianhui
• Format: Article
• Language: English
• Subjects: Conductivity; Flame retardancy; Phytic acid; Polyaniline-deposited paper; Sulfosalicylic acid
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2014.09.025

•PA used as doping acid could significantly improve flame retardancy of PANI deposited paper composite.•Outstanding flame retardancy of PA-doped PANI deposited paper composite was caused by synergetic effect of PANI coating and H3PO4.•Both higher flame retardancy and higher conductivity could be obtained by co-doping of SSA with PA. Polyaniline (PANI)-deposited electrically conductive and flame retardant paper composite was prepared using phytic acid (PA) as dopant or co-dopant. PA as doping acid greatly improved the flame retardancy of PANI-deposited paper composite whilst the conductivity was lower compared with using 5-sulfosalicylic acid (SSA) as doping acid. Lower temperature was favorable to obtain PANI-deposited paper composite with both higher conductivity and better flame retardancy. Conductivity of PANI-deposited paper composite increased with increase of doping acid concentration and the suitable PA concentration range was 0.15–0.3mol/L depending on the requirement of conductivity and flame retardancy. The PANI-deposited paper composite was characterized by SEM, TGA and XPS. The outstanding flame retardancy of PA-doped paper composite was caused by the synergetic effect of PANI coating and H3PO4. Both higher flame retardancy and higher conductivity of PANI-deposited paper composite were obtained by co-doping of SSA with PA.