A Study of Bacterial Cellulose Prepared from Coconut Water Affecting on Natural Rubber Composite Reinforcement
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Abstract
This study aimed to apply bacterial cellulose as a bio-based filler for natural rubber. Bacterial cellulose was prepared by culturing Acetobacter xylinum on Hestrin-Schramm (HS) medium using coconut water as a carbon source. The obtained bacterial cellulose was dried, ground into powder, and separated using a shaker sieve. The cellulosic functional groups were analyzed by fourier transform infrared spectroscopy (FTIR). Natural rubber composites were prepared by blending natural rubber, various chemicals, and bacterial cellulose using a double-roll mixer. The effects of the amount (1, 2.5 and 5 parts per hundred rubber, phr) and particle size (20, 40, 60, 80 and 120 mesh) of bacterial cellulose on the dimensional stability and mechanical properties, including tensile strength and elongation to break, of the natural rubber composites were investigated. The results showed that bacterial cellulose could be successfully synthesized, and that neither its particle size nor its content significantly affected the dimensional stability of the rubber. In addition, the use of 80 mesh (180 mm) bacterial cellulose at a ratio of 1 phr provided the highest tensile strength. However, the elongation to break of the different natural rubber composite formulations did not differ significantly.
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References
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