Properties of Polyaniline with the Doping of Different Acid

Abstract:

Polyaniline(PANI) with the doping of hydrochloride(HC1), aminosulfonic acid (NH2SO3H) or dodecylbenzenesulfonic acid(DBSA) was prepared by in-situ polymerization. Effects of acid content, reaction time, oxidant ammonium persulfate (APS) dosage and reaction temperature on the conductivity of PANI were studied. The resistance and thermal stability of them were compared. Results show that the largest conductivity of HC1-PANI is 1.98 s.cm-1 among them in case the C(HC1)=0.5mol/L, reaction time is 6.0h, n(APS/aniline)=1.0; The conductivity of NH2SO3H-PANI is 0.2s.cm-1 in case the C(NH2SO3H)=1.0mol/L, reaction time is 6.0h, n(APS/aniline)=2.0; The conductivity of DBSA-PANI is 0.98s.cm-1 in case the C(DBSA)=1.0 mol/L, reaction time is 8.0h, n(APS/aniline) = 2.0. The the least resistance of HC1-PANI is 10Ω, and that of NH2SO3H- PANI is the largest of 120Ω. The order of their thermal stability is DBSA-PANI > NH2SO3H-PANI > HC1-PANI before 350°C, that of their thermal stability is inverse when it reaches 350°C.

• Periodical: Advanced Materials Research (Volume 502)
• Pages: 31-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.502.31
• Online since: April 2012
• Authors: Xiao Hua Wang
• Keywords: Acid Doping, Conductivity, Polyaniline, Resistance, Thermal Stability

References

[1] F. Cao, D. X. Li, Z. S. Guan, Progress in study on conducting polymer polyaniline, Mater. Rev. 21(2007)48-55.

[2] H. X. Feng, L. Shao, J. H. Qiu, Synthesis of polyaniline doped by amino acid with solution polymerization, Fun. Mater. 38(2007)523-525.

[3] Z. H. Wu, F. M. Zhu, M. Luo, Preparation and application of anti-corrosive polyaniline paint, Mod. Pain.& Fin. 11(2008)34-37.

[4] P. Zhong, J. J. Huang, The aniline-polyvinyl alcohol microemulsion electric conduction coating development and performance test, Fib. Rein. Pl. Comp. (2009) 58-61.

[5] Y. Ding, J. P. Yang, Emulsion polymerization process research of phenylamine in DBSA/water systems, Act. Pol. Sin. (2008) 246-250.

[6] H.Y. Yan, Z. Y. Hu, K. C. Kou, Study on conductivity and spectra of polyaniline doped with functional sulfonic acids, J. Mater. Eng. (2005)50-52,57.

[7] X. B. Jing, X. L. Wang, X. H. Wang, Synthesis, structure, properties and applications of conducting polyanline, Act. Pol. Sin.34(2005)655-663.

[8] L. Ma, L. J. Feng, M. Y. Gan, Synthesis and properties of conducting polyaniline doped with multiple sulfonic acid, Chin. J. Appl. chem. 25(2008)142-146.

[9] Y. C. Sun, Semiconductor Testing Technology, Metallurgical Industry Publishers ed., Beijing, China,1990.

[10] J. J. Ma, L. Liu, X. F. Zhu, Preparation of HCl doped polyaniline and its characteristics, Chem. Res. Appl. 19(2007)1233-1237.

[11] X. H. Wang, Preparation of acid-doped PANI-PVA electric conductive coatings, Chem. Indus. Eng. Prog. 29(2010)690-693.

[12] H. X. Liao, D. K. He, A. Q. Zhang, Progress in preparation and application of water-soluble conductive polyaniline, Chem. & Bio. Eng. 25(2008)1-4.

[13] B. Ren, C. Yu, Synthesize and properties of conductive polyaniline, Chin. J. Sp. Lab. 2(2005) 148-151.