The Effect of Nitrogen Bubbles on Microstructure of Natural Rubber Foams Produced by Bubbling Process

Article Preview

Abstract:

Natural rubber latex foam (NRF) was produced using nitrogen bubbling process. The process involved flowing of nitrogen with a constant flow rate of 80 cc/min through a bubble column, filled with latex compound, to generate a high bubble-volume inside the column. Microstructure of the finished product was examined using a scanning electron microscope (SEM), in comparison with that of the purchased Dunlop foam. The results showed characteristic of the as-produced foam that they composed of spherical pores with a uniform interconnected-cell structures. On the other hand, the Dunlop foam exhibited non-spherical pores and non-uniform cell structure with broken cells.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

91-95

Citation:

Online since:

July 2019

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2019 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] A.F.A. Karim, H. Ismail and Z.M. Ariff: Properties and Characterization of Kenaf-Filled Natural Rubber Latex Foam, bioresources Vol. 11(1) (2016), pp.1080-1091.

DOI: 10.15376/biores.11.1.1080-1091

Google Scholar

[2] L. Evelyn and M. Singh: The Dunlop process in natural rubber latex foam, Rubber Technology Developments Vol. 10(2) (2010).

Google Scholar

[3] W. Pansiriwirote: Preparation natural rubber foam via Talalay Process: Processing Condition, Master's Thesis, Department of Science in Polymer Technology, Prince of Songkla University (2008).

Google Scholar

[4] S. Poompradub: Improvement of degradation resistance and mechanical properties of natural rubber by modified calcium carbonate, Department of Chemical Technology, Chulalongkorn University (2009).

Google Scholar

[5] S. Khompok: The processing and property studies of low density natural rubber foam, Master's Thesis, Department of Engineering in Materials Engineering, Prince of Songkla University (2007).

Google Scholar

[6] W.B. Zimmerman1, V. Tesar, S. Butler and H.H. Bandulasena: Microbubble Generation, Bentham Science Vol. 2 (2008), pp.1-8(8).

Google Scholar

[7] C. P. Ribeiro Jr. and P. L. C. Lage: Experimental study on bubble size distributions in a direct-contact evaporator, Brazilian Journal of Chemical Engineering Vol. 21 (2004), p.69 – 81.

DOI: 10.1590/s0104-66322004000100008

Google Scholar

[8] J. M. Baldwin, D. R. Bauer, and K. R. Ellwood: Effects of Nitrogen Inflation on Tire Aging and Performance, Rubber Division, American Chemical Society Grand Rapids, MI (2004).

Google Scholar

[9] U. Karmarkar: Effect of nitrogen purity on the oxidation of belt coat compound, Akron Rubber Development Laboratory, Inc (2006).

Google Scholar