Moisture Diffusion in Silica/Clay/Natural Rubber Hybrid Composites

Abstract:

This study investigated moisture diffusion in natural rubber (NR) hybrid composites filled with silica and bentonite clay. Natural bentonite (BNT) was treated with tetradecyldimethylammonium chloride and coco diethanolamide to produce modified bentonite (M-BNT). Varied proportions of silica, M-BNT, and BNT fillers were added to raw NR according to a third-degree simplex lattice mixture design of experiment. The addition of fillers affects the vulcanization characteristics, mechanical properties, and hardness of NR hybrid composites. Moisture diffusion behavior was studied by monitoring the water uptake of NR composites during immersion in deionized water at 80^°C. Data from sorption experiments were fitted on the classical Fickian and Langmuir-type diffusion models. The Fickian model overestimates and underestimates the water uptake of NR composites in the early and later stages of moisture diffusion, respectively. On the other hand, the Langmuir-type model adequately captures the anomalous diffusion behavior of moisture in NR composites. Parameters of the Langmuir model (equilibrium water uptake and diffusion coefficient) vary with the composition of hybrid fillers. Optimum proportions of silica, M-BNT, and BNT in rubber composites were obtained by considering the effect of fillers on mechanical properties and moisture diffusion characteristics of NR.

• Periodical: Diffusion Foundations (Volume 22)
• Pages: 9-18
• DOI: https://doi.org/10.4028/www.scientific.net/DF.22.9
• Online since: May 2019
• Authors: Bryan B. Pajarito*, Mark Rigel R. Ali
• Keywords: Clay, Composite, Diffusion, Moisture, Natural Rubber, Silica

References

[1] M. Arroyo, M. Lopez-Manchado and B. Herrero: Polymer Vol. 44 (2003), p.2447.

[2] M. Castellano, L. Conzatti, L. Falqui, A. Turturro, B. Valenti and F. Negroni: Polymer Vol. 46 (2005), p.695.

DOI: 10.1016/j.polymer.2004.11.010

[3] M. Wagner: Rubber Chem. Technology Vol 49 (1976), p.703.

[4] A. Ansarifar, L. Wang, R. Ellis and Y. Haile-Meskel: J. Appl. Polym. Science Vol. 119 (2011), 922.

[5] M. Alexandre and P. Dubois: Mater. Sci. Engineering Vol. 28 (2000), p.1.

[6] K. Gatos and J. Karger-Kocsis: Polymer Vol. 46 (2005), p.3069.

[7] J. Gao, Z. Gu, G. Song, P. Li and W. Liu: Appl. Clay Science Vol. 42 (2008), p.272.

[8] J. Frohlich, W. Niedermeier and H. D. Luginsland: Composites Part A Vol. 36 (2005), p.449.

[9] Y. C. Ko and G. Park: Korean J. Chem. Engineering Vol. 24 (2007), p.975.

[10] X. Xiong, J. Wang, H. Jia, L. Ding, X. Dai and X. Fei: Polym. Composites Vol. 35 (2014), p.1466.

[11] B. Dong, C. Liu and Y. P. Wu: Polym. Testing Vol. 38 (2014), p.40.

[12] N. Rattanasom, T. Saowapark and C. Deeprasertkul: Polym. Testing Vol. 26 (2007), p.369.

[13] S. S. Choi: J. Polym. Sci. Part B: Polym. Physics Vol. 39 (2001), p.439.

[14] X. Liu, S. Zhao, Y. Yang, X. Zhang and Y. Wu: Polym. Adv. Technology Vol. 20 (2009), p.818.

[15] N. Z. Noriman and H. Ismail: Intern. J. Polymeric Materials Vol. 62 (2013), p.252.

[16] N. Rattanasom and S. Prasertsri: Polym. Testing Vol. 28 (2009), p.270.

[17] M. Galimberti, M. Coombs, S. Pandini, T. Ricco, V. Cipolletti, L. Conzatti and G. Guerra: Appl. Clay Science Vol. 104 (2015), p.8.

[18] M. Galimberti, M. Coombs, V. Cipolletti, L. Giannini and L. Conzatti: Appl. Clay Science Vol. 83-84 (2013), p.449.

DOI: 10.1016/j.clay.2013.06.035

[19] S. Praveen, P. K. Chattopadhyay, P. Albert, V. G. Dalvi, B. C. Chakraborty and S. Chattopadhyay: Composites Part A Vol. 40 (2009), p.309.

[20] J. A. Gopi, S. K. Patel, A. K. Chandra and D. K. Tripathy: J. Polym. Research Vol. 18 (2011), p.1625.

[21] T. R. Mohanty, V. Bhandari, A. K. Chandra, P. K. Chattopadhyay and S. Chattopadhyay: Polym. Composites Vol. 34 (2013), p.214.

[22] M. Maiti, S. Sadhu and A. K. Bhowmick: J. Appl. Polym. Science Vol. 96 (2005), p.443.

[23] P. K. Chattopadhyay, S. Chattopadhyay, N. C. Das and P. P. Bandyopadhyay: Mat. Design Vol. 32 (2011), p.4696.

[24] S. Praveen, P. K. Chattopadhyay, S. Jayendran, B. C. Chakraborty and S. Chattopadhyay: Polym. Composites Vol. 31 (2010), p.97.

[25] O. J. Ogbebor, U. N. Okwu, F. E. Okieimen and D. Okuonghae: Chemical Industry & Chemical Engineering Quarterly Vol. 16 (2010), p.373.

DOI: 10.2298/ciceq100110038o

[26] L. Bokobza, E. Leroy and V. Lalanne: Eur. Polym. Journal Vol. 45 (2009), p.996.

[27] H. Ismail and M. Mathialagan: Polym. Testing Vol. 31 (2012), p.199.

[28] C. Jia, L. Q. Zhang, H. Zhang and Y. L. Lu: Polym. Composites Vol. 32 (2011), p.1245.

[29] N. I. N. Ismail, A. Ansarifar and M. Song: Polym. Eng. Science Vol. 54 (2014), p. (1909).

[30] B. Pajarito and M. Kubouchi: J. Chem. Eng. Japan Vol. 46 (2013), p.18.

[31] B. B. Pajarito, M. Kubouchi, T. Sakai and S. Aoki: J. Soc. Mater. Sci. Japan Vol. 61 (2012), p.860.

[32] J. A. Cornell: Experiments with Mixtures: Designs, Models, and the Analysis of Mixture Data (Wiley, New York 2002).

[33] W. D. Callister and D. G. Rethwisch: Fundamentals of Materials Science and Engineering: An Integrated Approach (Wiley, New Jersey 2012).

[34] J. S. Dick: Rubber Technology: Compounding and Testing for Performance (Hanser, Ohio 2000).

[35] J. Crank: The Mathematics of Diffusion (Oxford University Press, London 1979).

[36] H. G. Carter and K. G. Kibler: J. Compos. Materials Vol. 12 (1978), p.118.

[37] J. P. Coates: Encyclopedia of Analytical Chemistry (J. Wiley & Sons, Chichester 2000).