Characteristics of natural rubber/latex compound waste (NR/LCW) blends in the perspective of shoe soles application

Ihda Novia Indrajati, Ike Setyorini, Indah Kumalasari


Being difficult to degrade, latex compound waste (LCW) should be handled carefully. In this study the possibility of application of LCW for shoe sole was evaluated. LCW was derived from latex-based industry from local factory. It was blended with natural rubber (NR) with the ratio ranging from 100/0; 90/10; 80/20; 70/30; 60/40 and 50/50. Cure characteristics and mechanical properties including tensile strength, elongation at break, hardness and tear strength, were measured before and after aging. Abrasion loss and slip resistance were also taken account. The results finding showed that crosslink density of the NR/LCW blends were higher than of control. Mechanical properties of the blends were greatly affected by crosslink density. Compared to control, the NR/LCW blends provided lower tensile and elongation, but higher in tear strength, hardness and abrasion loss. Heat aging tended to decrease the mechanical properties. LCW improved the coefficient of friction (CoF).

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Boondamnoen, O., Ohshima, M., Azura, A. R., Chuayjuljit, S., & Arifin, A. (2012). Recycling waste natural rubber latex by blending with polysterene – Characterization of mechanical properties. International Journal of Modern Physics: Conference Series, 06, 391–396.

Braunstein, B., Arampatzis, A., Eysel, P., & Brüggemann, G. P. (2010). Footwear affects the gearing at the ankle and knee joints during running. Journal of Biomechanics, 43(11), 2120–2125.

Colonna, M., De Bon, F., Tarterini, F., Moncalero, M., Totaro, G., Gioia, C., & Fabbri, P. (2016). Ski boot soles based on a glass fiber/rubber composite with improved grip on icy surfaces. Procedia Engineering, 147, 372–377.

Dierkes, W. K., Rajan, V. V., Noordermeer, J. W. M., & Joseph, R. (2007). Application of NR-based latex reclaim: The link between structure and properties. Rubber Chemistry and Technology, 80(1), 40–60.

Formela, K., Wąsowicz, D., Formela, M., Hejna, A., & Haponiuk, J. (2015). Curing characteristics, mechanical and thermal properties of reclaimed ground tire rubber cured with various vulcanizing systems. Iranian Polymer Journal, 24(4), 289–297.

Herbaut, A., Chavet, P., Roux, M., Guéguen, N., Barbier, F., & Simoneau-Buessinger, E. (2017). The influence of shoe aging on children running biomechanics. Gait and Posture, 56, 123–128.

Iraqi, A., Cham, R., Redfern, M. S., & Beschorner, K. E. (2018). Coefficient of friction testing parameters influence the prediction of human slips. Applied Ergonomics, 70, 118–126.

Kim, I. J. (2016). Identifying shoe wear mechanisms and associated tribological characteristics: Importance for slip resistance evaluation. Wear, 360–361, 77–86.

Medina, N. F., Garcia, R., Hajirasouliha, I., Pilakoutas, K., Guadagnini, M., & Raffoul, S. (2018). Composites with recycled rubber aggregates: Properties and opportunities in construction. Construction and Building Materials, 188, 884–897.

Naebpetch, W., Junhasavasdikul, B., Saetung, A., Tulyapitak, T., & Nithi-Uthai, N. (2016). Influence of accelerator/sulphur and co-agent/peroxide ratios in mixed vulcanisation systems on cure characteristics, mechanical properties and heat aging resistance of vulcanised SBR. Plastics, Rubber and Composites, 45(10), 436–444.

Nuzaimah, M., Sapuan, S. M., Nadlene, R., & Jawaid, M. (2018). Recycling of waste rubber as fillers: A review. IOP Conference Series: Materials Science and Engineering, 368, 012016.

Ramli, N. F., Dzulkafly, N. S., & Rashid, A. A. (2016). Utilization of waste natural rubber latex for cleaning application. Advanced Materials Research, 1133, 221–225.

Shimazaki, Y., Nozu, S., & Inoue, T. (2016). Shock-absorption properties of functionally graded EVA laminates for footwear design. Polymer Testing, 54, 98–103.

Silva, R. M., Rodrigues, J. L., Pinto, V. V., Ferreira, M. J., Russo, R., & Pereira, C. M. (2009). Evaluation of shock absorption properties of rubber materials regarding footwear applications. Polymer Testing, 28(6), 642–647.

Surya, I., Ismail, H., & Azura, A. R. (2013). Alkanolamide as an accelerator, filler-dispersant and a plasticizer in silica-filled natural rubber compounds. Polymer Testing, 32(8), 1313–1321.

Tsai, Y. J., & Powers, C. M. (2009). Increased shoe sole hardness results in compensatory changes in the utilized coefficient of friction during walking. Gait and Posture, 30(3), 303–306.

Zhao, F., Bi, W., & Zhao, S. (2011). Influence of crosslink density on mechanical properties of natural rubber vulcanizates. Journal of Macromolecular Science, Part B, 50(7), 1460–1469.



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