Novel Smart Polymeric Composites for Thermistors and Electromagnetic Wave Shielding Effectiveness from TiC Loaded Styrene-Butadiene Rubber

Yong Kiel Sung; Farid El-Tantawy

Macromolecular Research, Vol.10, No.6, 345-358, December, 2002

Yong Kiel Sung^†, and Farid El-Tantawy¹

Department of Chemistry, College of Science, Dongguk University, Seoul 100-715, Korea
¹Faculty of Science, Suez Canal University, Ismailia, Egypt

E-mail:

The electrical conductivity during vulcanization process was measured as a function of time for the system of TiC loaded styrene-butadiene rubber (SBR) composites. The phenomenon of negative and positive temperature coefficients of conductivity and its conduction mechanism were also studied for the SBR polymeric composites. The current-voltage characteristics of the polymeric composites were non-linear in high voltage and showed a switching effect. The effects of temperature on the thermal conductivity and effective dielectric constant were measured. The measured parameters were found to be dependent on TiC concentration. The electromagnetic wave shielding (EMS) of the SBR-TiC polymeric composite was also examined. The SBR filled with TiC could be expected to be promising novel smart polymeric composites for self-electrical heating, temperature sensor, time delay switching, and electromagnetic wave shielding effectiveness.

Keywords:SBR-TiC polymeric composites;thermistor;electrical conductivity;electromagnetic wave shielding effectiveness

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[Referenced By]

[1] El-Tantawy F, Eur. Polym. J., 37, 565 (2001)

[2] El-Tantawy F, Bakry A, El-Gohary AR, Polym. Int., 49, 1670 (2000)

[3] Hassan HH, Abdel-Bary EM, Appl. Phys. Commun., 9, 267 (1990)

[4] Prokes J, Krivka I, Stejskal J, Polym. Degrad. Stabil., 68, 261 (2000)

[5] Chekanov Y, Ohnogi R, Asai S, Sumita M, Polym. J., 30, 381 (1998)

[6] Yoshino K, Jpn. J. Appl. Phys., 32, 979 (1993)

[7] Yin XH, Synth. Met., 69, 367 (1995)

[8] Ali MH, Abo-Hashem A, J. Mater. Proc. Tech., 68, 168 (1997)

[9] Saxena NS, Eur. Polym. J., 35, 1687 (1999)

[10] Badawy MM, Polym. Testing, 15, 507 (1996)

[11] Fujikura Y, Kawarai M, Ozaki F, Polym. J., 21, 609 (1989)

[12] Gopakumar TG, Polym. J., 29, 884 (1997)

[13] Hopark W, Polym. J., 28, 672 (1996)

[14] Saraydin D, Polym. J., 29, 631 (1997)

[15] Shan J, Polym. J., 29, 580 (1997)

[16] Okazaki M, Polym. J., 31, 672 (1999)

[17] Tagachi H, Physica B, 270, 325 (1999)

[18] Ghosh P, Chakrabarti A, Eur. Polym. J., 36, 1043 (2000)

[19] Karasek L, Polym. J., 28, 121 (1996)

[20] Flory PJ, J. Chem. Phys., 18, 108 (1950)

[21] Karasek L, Sumita M, J. Mater. Sci., 31(2), 281 (1996)

[22] Saxena NS, Pradeep P, Eur. Polym. J., 35, 1687 (1999)

[23] Baba M, Polym. Degrad. Stabil., 63, 121 (1999)

[24] Majumder PS, Radiat. Phys. Chem., 53, 63 (1998)

[25] Chan CM, Cheng CL, Yuen MM, Polym. Eng. Sci., 37(7), 1127 (1997)

[26] Tang H, Chen X, Luo Y, Eur. Polym. J., 32, 963 (1996)

[27] Yuksekkalayci C, Yilmazer U, Orbey N, Polym. Eng. Sci., 39(7), 1216 (1999)

[28] George S, Varughese KT, Thomas S, Polymer, 41(2), 579 (2000)

[29] Sombatsompop N, Wood AK, Polym. Testing, 16, 203 (1997)

[30] Sau KP, Chaki TK, Khastgir D, Polymer, 39(25), 6461 (1998)

[31] Ishida H, Rimdusit S, Thermochim. Acta, 320(1-2), 177 (1998)

[32] Kokabi HR, Rapeaux M, Aymami J, Mater. Sci. Eng., 38, 80 (1996)