Water-Dispersible Conducting Nanocomposites of Polymethylmethacrylate-SiO2 Modified by Polyaniline and Polypyrrole

Arjun Maity; Mukul Biswas

Journal of Industrial and Engineering Chemistry, Vol.12, No.4, 626-634, July, 2006

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Water-Dispersible Conducting Nanocomposites of Polymethylmethacrylate-SiO2 Modified by Polyaniline and Polypyrrole

Arjun Maity, and Mukul Biswas^†

Department of Chemistry, Presidency College, Calcutta-73, India

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A suspension of poly(methyl methacrylate)-SiO2 nanocomposite was prepared via K2CrO4-NaAsO2 redox polymerization of methyl methacrylate in aqueous medium. Polyaniline and polypyrrole moieties were then precipitated onto this suspension during polymerization of the respective monomers in the aqueous medium resulting in the formation of conducting nanocomposites of mixed polymer systems. The presence of polyaniline, polypyrrole, and poly(methyl methacrylate) in the composites was confirmed by FTIR spectroscopic analyses. Scanning electron microscopic analyses for the poly(methyl methacrylate)-SiO2, polyaniline-[poly(methyl methacrylate)-SiO2] and polypyrrole-[poly(methyl methacrylate)-SiO2] composites revealed the formation of lumpy aggregates. The sizes of the mixed polymer composite lumps were larger than those of the poly(methyl methacrylate)-SiO2 composite. Transmission electron microscopic analyses confirmed that the particle sizes of the PMMA-SiO2 and PPY-(PMMA-SiO2) composites were in the nanometer range. Thermogravimetric analyses of the composites demonstrated the enhanced thermal stability of the composites relative to those of the base polymers. While poly(methyl methacrylate) was practically a non-conducting polymer (10-13 S/cm), the dc conductivities of the polyaniline-[poly(methyl methacrylate)- SiO2] and polypyrrole-[poly(methyl methacrylate)-SiO2] composites were improved remarkably (on the order of 10-3 S/cm and 10-4 S/cm, respectively). These composites produced a permanently stable aqueous suspension under the polymerization conditions adopted in the present study.

Keywords:poly(methyl methacrylate);polyaniline;polypyrrole;K2CrO4- NaAsO2 redox system;conductivity

[References]

Toshima N, Hara S, Prog. Polym. Sci, 20, 155 (1995)
Roncali J, Chem. Rev., 92, 731 (1992)
Biswas M, Ray A, J. Appl. Polym. Sci., 49, 2189 (1993)
Morita M, Hashina I, Nishimura M, J. Appl. Polym. Sci., 36, 1639 (1988)
Paoli M, De A, Waltman RJ, Diaz AF, Bargon JJ, J. Polym. Sci., Polym. Chem. Ed., 23, 1685 (1985)
Stanke D, Hallensleben ML, Toppare L, Synth. Met., 55, 1108 (1993)
Yang S, Rukenstein E, Synth. Met., 59, 1 (1993)
Yang S, Rukenstein E, Polymer, 34, 4655 (1993)
Wei Y, Yeh JM, Jin D, Jia X, Wang J, Gang GW, Chen C, Gumbs RW, Chem. Mater., 7, 969 (1995)
Sung JH, Cho MS, Choi HJ, Jhon MS, J. Ind. Eng. Chem., 10(7), 1217 (2004)
Lee IS, Cho MS, Choi HJ, Polymer, 46(4), 1317 (2005)
Cho MS, Kim JW, Choi HJ, Jhon MS, Polym. Adv. Technol., 16, 352 (2005)
Choi HJ, Cho MS, Lee YH, Cho YH, Jhon MS, E-Polymers(030) (2004)
Cho MS, Cho YH, Choi HJ, Jhon MS, Langmuir, 19(14), 5875 (2003)
Cho YH, Cho MS, Choi HJ, Jhon MS, Colloid Polym. Sci., 280, 1062 (2002)
Park SY, Cho MS, Kim CA, Choi HJ, Jhon MS, Colloid Polym. Sci., 282, 198 (2003)
Barthet C, Armes SP, Lascelles SF, Luk SY, Stanley HME, Langmuir, 14(8), 2032 (1998)
Cairns DB, Armes SP, Bremer LGB, Langmuir, 15(23), 8052 (1999)
Khan MA, Armes SP, Adv. Mater., 12, 671 (2000)
Chen HW, Lin TP, Chang FC, Polymer, 43(19), 5281 (2002)
Ohkita K, Tsubokawa N, Saitoh E, Noda M, Takashina N, Carbon, 13, 443 (1975)
Tsubokawa N, J. Poly. Sci., Polym. Lett. Ed., 18, 461 (1980)
Ohkita K, Uchiyama M, Nishioka H, Carbon, 16, 195 (1978)
Ohkita K, Tsubokawa N, Noda M, Uchiyama M, Carbon, 15, 195 (1977)
Tsubokawa N, Takeda N, Kudoh K, Carbon, 18, 163 (1980)
Tsubokawa N, Takeda N, Kanamaru A, J. Polym. Sci. Polym. Chem. Ed., 18, 625 (1980)
Ray SS, Biswas M, Synth. Met., 105, 99 (1999)
Ballav N, Biswas M, Synth. Met., 132, 213 (2003)
Maity A, Biswas M, Polym. J., 35, 993 (2003)
Maity A, Biswas M, Polym. Int., 54, 710 (2005)
Maity A, Biswas M, J. Ind. Eng. Chem., 12(3), 311 (2006)
Stejskal J, Gilbert RG, Pure Appl. Chem., 74, 858 (2002)
Pron A, Genoud F, Menardo C, Necheiu M, Synth. Met., 18, 291 (1987)
Omastova M, Pavlinec J, Pionteck J, Simon F, Kosina S, Polymer, 39(25), 6559 (1998)
Socrates G, Infra-red characteristic group frequencies, J Wiley, UK, London (1980)
Chen G, Weng W, Wu D, Wu C, Eur. Polym. J., 39, 2329 (2003)
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[Referenced By]

[1] Toshima N, Hara S, Prog. Polym. Sci, 20, 155 (1995)

[2] Roncali J, Chem. Rev., 92, 731 (1992)

[3] Biswas M, Ray A, J. Appl. Polym. Sci., 49, 2189 (1993)

[4] Morita M, Hashina I, Nishimura M, J. Appl. Polym. Sci., 36, 1639 (1988)

[5] Paoli M, De A, Waltman RJ, Diaz AF, Bargon JJ, J. Polym. Sci., Polym. Chem. Ed., 23, 1685 (1985)

[6] Stanke D, Hallensleben ML, Toppare L, Synth. Met., 55, 1108 (1993)

[7] Yang S, Rukenstein E, Synth. Met., 59, 1 (1993)

[8] Yang S, Rukenstein E, Polymer, 34, 4655 (1993)

[9] Wei Y, Yeh JM, Jin D, Jia X, Wang J, Gang GW, Chen C, Gumbs RW, Chem. Mater., 7, 969 (1995)

[10] Sung JH, Cho MS, Choi HJ, Jhon MS, J. Ind. Eng. Chem., 10(7), 1217 (2004)

[11] Lee IS, Cho MS, Choi HJ, Polymer, 46(4), 1317 (2005)

[12] Cho MS, Kim JW, Choi HJ, Jhon MS, Polym. Adv. Technol., 16, 352 (2005)

[13] Choi HJ, Cho MS, Lee YH, Cho YH, Jhon MS, E-Polymers(030) (2004)

[14] Cho MS, Cho YH, Choi HJ, Jhon MS, Langmuir, 19(14), 5875 (2003)

[15] Cho YH, Cho MS, Choi HJ, Jhon MS, Colloid Polym. Sci., 280, 1062 (2002)

[16] Park SY, Cho MS, Kim CA, Choi HJ, Jhon MS, Colloid Polym. Sci., 282, 198 (2003)

[17] Barthet C, Armes SP, Lascelles SF, Luk SY, Stanley HME, Langmuir, 14(8), 2032 (1998)

[18] Cairns DB, Armes SP, Bremer LGB, Langmuir, 15(23), 8052 (1999)

[19] Khan MA, Armes SP, Adv. Mater., 12, 671 (2000)

[20] Chen HW, Lin TP, Chang FC, Polymer, 43(19), 5281 (2002)

[21] Ohkita K, Tsubokawa N, Saitoh E, Noda M, Takashina N, Carbon, 13, 443 (1975)

[22] Tsubokawa N, J. Poly. Sci., Polym. Lett. Ed., 18, 461 (1980)

[23] Ohkita K, Uchiyama M, Nishioka H, Carbon, 16, 195 (1978)

[24] Ohkita K, Tsubokawa N, Noda M, Uchiyama M, Carbon, 15, 195 (1977)

[25] Tsubokawa N, Takeda N, Kudoh K, Carbon, 18, 163 (1980)

[26] Tsubokawa N, Takeda N, Kanamaru A, J. Polym. Sci. Polym. Chem. Ed., 18, 625 (1980)

[27] Ray SS, Biswas M, Synth. Met., 105, 99 (1999)

[28] Ballav N, Biswas M, Synth. Met., 132, 213 (2003)

[29] Maity A, Biswas M, Polym. J., 35, 993 (2003)

[30] Maity A, Biswas M, Polym. Int., 54, 710 (2005)

[31] Maity A, Biswas M, J. Ind. Eng. Chem., 12(3), 311 (2006)

[32] Stejskal J, Gilbert RG, Pure Appl. Chem., 74, 858 (2002)

[33] Pron A, Genoud F, Menardo C, Necheiu M, Synth. Met., 18, 291 (1987)

[34] Omastova M, Pavlinec J, Pionteck J, Simon F, Kosina S, Polymer, 39(25), 6559 (1998)

[35] Socrates G, Infra-red characteristic group frequencies, J Wiley, UK, London (1980)

[36] Chen G, Weng W, Wu D, Wu C, Eur. Polym. J., 39, 2329 (2003)

[37] Ku CC, Liepins R, in Electrical Properties of Polymers, Chemical Principles, Hanser Publishers, Munich, 1987, p. 326