Structure-Property Relationship of Dodecylbenzenesulfonic Acid Doped Polyaniline

Abstract:

Dodecylbenzenesulfonic acid (DBSA) doped polypanilines (PANIs) were chemically synthesized in different molar ratios of aniline (An) to ammonium persulfate (APS) and An to DBSA. The microstructures of these PANIs were investigated by means of scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier Transform Infrared (FTIR). UV-Vis spectrometer, semiconductor parameter analyzer, ubbelohde viscometer and electrospinning technique were used to characterize the optical, electrical properties, viscosity and solubility of these PANIs. The results show that the molar rations of An to APS and An to DBSA had strong effect on the microstructure, molecular weight, degree of crystallinity, optical property, solubility and conductivity of obtained DBSA doped PANI. With the increase of the molar ratios of An to APS and An to DBSA, the conductivities and molecular weight of DBSA doped PANIs decreased, while the degree of crystallinity and solubility of DBSA doped PANIs increased. The DBSA doped PANI could dissolve in dichloromethane or HFIP and could be fabricated short fibers by electrospinning. Moreover, the solution of DBSA doped PANIs in concentrated sulphuric acid showed liquid crystal property.

• Periodical: Advanced Materials Research (Volume 721)
• Pages: 199-205
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.721.199
• Online since: July 2013
• Authors: Ying Liu, Qi Wen, Jia Li Guan, Shi Jie Zhao, Qi Xing Hu, Zhi Feng Hou, Qiao Zhen Yu
• Keywords: Conductivity, Microstructure, Polyaniline, Solubility, Spinnability

References

[1] S. A. Travain, G. F. Leal Ferreira, J. A. Giacometti, R. F. Bianchi, Electrical characterization of in situ polymerized polyaniline thin films. Materials Science and Engineering B 143 (2007) 31–37.

DOI: 10.1016/j.mseb.2007.07.071

[2] J. Huang, S. Virji, B. H. Weiller, R. B. Kaner, Nanostructured Polyaniline Sensors. Chem. Eur. J. 10 (2004) 1314-1319.

DOI: 10.1002/chem.200305211

[3] J. Huang, S. Virji, B. H. Weiller, R.B. Kaner, Polyaniline Nanofibers: Facile Synthesis and Chemical Sensors. J. Am. Chem. Soc. 125 (2003) 314-315.

DOI: 10.1021/ja028371y

[4] Li. D, Y. N. Xia, Electrospinning of nanofibers: Reinventing the wheel? Adv. Mater. 16 (2004) 1151-1170.

DOI: 10.1002/adma.200400719

[5] I. D. Norris, M. M. Shaker, F. K. Ko, A. G. MacDiarmid, Electrostatic fabrication of ultrafine conducting fibers: polyanilinerpolyethylene oxide blends. Synth. Met. 114 (2000) 109-114.

DOI: 10.1016/s0379-6779(00)00217-4

[6] D. Aussawasathien, J. H. Dong, L. Dai, Electrospun polymer nanofiber sensors. Synth. Met. 154 (2005) 37-40.

DOI: 10.1016/j.synthmet.2005.07.018

[7] A.G. MacDiarmid, A novel role for organic polymers. Synth.Met. 125 (2001) 11-22.

[8] J. R. Cárdenas, M G O de Franca, E A de Vasconcelos, W M de Azevedo, E F da Silva Jr,, Growth of sub-micron fibres of pure polyaniline using the electrospinning. J. Phys. D: Appl. Phys. 40 (2007) 1068-1071.

DOI: 10.1088/0022-3727/40/4/022

[9] S.X. Xing, C. Zhao, S. Y Jing, Z. C. Wang, Morphology and conductivity of polyaniline nanofibers prepared by 'seeding'polymerization. Polym. 47 (2006) 2305-2313.

DOI: 10.1016/j.polymer.2006.02.008

[10] Q. Z. Yu, M. Wang, H. Z. Chen, Z. W. Dai. Polyaniline nanowires on TiO2 nano/microfiber hierarchical nano/microstructures: Preparation and their photocatalytic properties. Materials Chemistry and Physics 129 (2011) 666– 672.

DOI: 10.1016/j.matchemphys.2011.05.012

[11] B. Dong, B. L. He, C. L. Xu, H. L. Li, Preparation and electrochemical characterization of polyaniline/multi-walled carbon nanotubes composites for supercapacitor. Mater. Sci. and Eng. B. 143 (2007) 7-13.

DOI: 10.1016/j.mseb.2007.06.017

[12] Natalia V. Blinova, Jaroslav Stejskal, Miroslava Trchová, Jan Prokes, Mária Omastová. Polyaniline and polypyrrole: A comparative study of the preparation. European Polymer Journal 43 (2007) 2331–2341.

DOI: 10.1016/j.eurpolymj.2007.03.045