Effect of Incremental Curing Agent Additions on Thermal Degradation of Polydimethylsiloxane in Air: A Kinetic Study

Muhammad Falaq Muhammad Faisal; H.N.M. Ekramul Mahmud; U.B. Deshannavar; Mohanad EL-Harbawi

doi:10.14233/ajchem.2014.17132

Issue

Vol. 26 No. 14 (2014): Vol 26 Issue 14

Issue Published : July 5, 2014

This work is licensed under a Creative Commons Attribution 4.0 International License.

Effect of Incremental Curing Agent Additions on Thermal Degradation of Polydimethylsiloxane in Air: A Kinetic Study

https://doi.org/10.14233/ajchem.2014.17132

Muhammad Falaq Muhammad Faisal

Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

H.N.M. Ekramul Mahmud

Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia

U.B. Deshannavar

Department of Chemical Engineering, KLE Dr. M.S. Shsehsgiri College of Engineering and Technology, Udyambag, Belgaum-590 008, India

Mohanad EL-Harbawi

Chemical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Kingdom of Saudi Arabia

Corresponding Author(s) : U.B. Deshannavar

deshannavar@gmail.com

Asian Journal of Chemistry, Vol. 26 No. 14 (2014): Vol 26 Issue 14
Article Published : July 6, 2014

Abstract

Polydimethylsiloxane samples produced via several curing agent: Elastomer base ratios (5, 10, 15 and 20 w/w %) have been thermally degraded under air atmosphere. Thermogravimetric analysis shows that for all polydimethylsiloxane samples, the onset of significant oxidative degradation is at 290 °C and subsequently two distinct degradation stages (290-400 and 400-600 °C) can be observed. At temperatures higher than 600 °C, polydimethylsiloxane samples produced using 5, 10, 15 and 20 wt % curing agent experience weight reductions by 60, 53, 47 and 42 %, respectively. Linear regression analysis using LINEST function in Microsoft Excel indicates that data within the 290-400 °C range fit the Arrhenius model far better than the data within the 400-600 °C range. Increments in wt % curing agent from 5 to 15 % enhance the thermal stability of polydimethylsiloxane samples within the temperature range 290-400 °C.

Keywords

Polymer Polydimethylsiloxane Thermal analysis Arrhenius model

Falaq Muhammad Faisal, M., Ekramul Mahmud, H., Deshannavar, U., & EL-Harbawi, M. (2014). Effect of Incremental Curing Agent Additions on Thermal Degradation of Polydimethylsiloxane in Air: A Kinetic Study. Asian Journal of Chemistry, 26(14), 4486–4488. https://doi.org/10.14233/ajchem.2014.17132

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References

F. de Buyl, Int. J. Adhes. Adhes., 21, 411 (2001); doi:10.1016/S0143-7496(01)00018-5.

Y. Ikada, Biomaterials, 15, 725 (1994); doi:10.1016/0142-9612(94)90025-6.

S. Köster, F.E. Angilè, H. Duan, J.J. Agresti, A. Wintner, C. Schmitz, A.C. Rowat, C.A. Merten, D. Pisignano, A.D. Griffiths and D.A. Weitz, Lab Chip, 8, 1110 (2008); doi:10.1039/b802941e.

R.N. Santra, P.G. Mukunda, G.B. Nando and T.K. Chaki, Thermochim. Acta, 219, 283 (1993); doi:10.1016/0040-6031(93)80505-5.

G. Deshpande and M.E. Rezac, Polym. Degrad. Stab., 76, 17 (2002); doi:10.1016/S0141-3910(01)00261-0.

Q.T. Nguyen, Z. Bendjama, R. Clement and Z. Ping, Phys. Chem. Chem. Phys., 1, 2761 (1999); doi:10.1039/a900765b.

F. Kolar, J. Svitilova and V. Machovic, Mater. Chem. Phys., 85, 458 (2004); doi:10.1016/j.matchemphys.2004.02.013.

N. Grassie and I.G. MacFarlane, Eur. Polym. J., 14, 875 (1978); doi:10.1016/0014-3057(78)90084-8.

R.N. Lewis, J. Am. Chem. Soc., 70, 1115 (1948); doi:10.1021/ja01183a073.

G. Camino, S.M. Lomakin and M. Lazzari, Polymer, 42, 2395 (2001); doi:10.1016/S0032-3861(00)00652-2.

Y. Han, J. Zhang, L. Shi, S. Qi, J. Cheng and R. Jin, Polym. Degrad. Stab., 93, 242 (2008); doi:10.1016/j.polymdegradstab.2007.09.010.

K.G. Mansaray and A.E. Ghaly, Biomass Bioenergy, 17, 19 (1999); doi:10.1016/S0961-9534(99)00022-7.

S. Yagmur and T. Durusoy, Energy Sources A, 31, 1227 (2009); doi:10.1080/15567030801952292.

M. Jeguirim and G. Trouve, Bioresour. Technol., 100, 4026 (2009); doi:10.1016/j.biortech.2009.03.033.

C.Y. Yin and B.M. Goh, Energy Sources A, 34, 246 (2011); doi:10.1080/15567030903586048.

C.Y. Yin and Z.T. Jiang, J. Energy Institute, 85, 57 (2012); doi:10.1179/1743967111Z.0000000006.

S. Vyazovkin and C.A. Wight, Thermochim. Acta, 340-341, 53 (1999); doi:10.1016/S0040-6031(99)00253-1.

Issue

Vol. 26 No. 14 (2014): Vol 26 Issue 14

Effect of Incremental Curing Agent Additions on Thermal Degradation of Polydimethylsiloxane in Air: A Kinetic Study

Corresponding Author(s) : U.B. Deshannavar

Abstract

Keywords

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