Surface Modification with Silane Coupling Agent on Tensile Properties of Natural Fiber Composite

Willy Artha Wirawan, Sofyan Arief Setyabudi, Teguh Dwi Widodo, Moch. Agus Choiron


Biocomposite is an innovation of renewable material in engineering made from the bark fiber of waru (Hibiscus tiliaceus, the bark is environmentally friendly and has the potential to be developed. The purpose of this study is to modify biocomposite by adding methacryloxypropyltrimethoxysilane-coupling agent on waru bark fiber (Hibiscus tiliaceus) as an effort to improve tensile properties. Waru bast fibers, as reinforcement, were prepared by alkali procces using 6% NaOH solution for 120 minutes and then added 0.75% coupling agent and  ordered using continous fibers with 0°/0°, 0°/90° and 45°/45° orientation. After that, the Biocomposites  were formed with a polyester matrix using Vacuum Pressure Resin Infusion (VAPRI) method. The results of SEM tested showed the quality improvement of the bonds bringing significant impact on the tensile properties of the waru bark biocomposite. On the continous fiber 0°/90° orientated  showed that the highest strength was 401.368 MPa, while biocomposites with 45°/45° orientation has lowest tensile strength of 65.243 MPa

Full Text:



Kumari, M., Kumar, R., & Kumar, V. (2014). Surface modification of cellulose using silane coupling agent. Carbohydrate Polymers, 111, 849–855.

Xue. Li., & Canada, A. (2007). Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites : A Review Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites : A Review, (May 2014).

Nishino T. (2004). Natural Fiber Sources, In: Bailie C, editors, Green composites Polymer composites and the environment, England, Woodhead Publishing Limited , pp:49

Malkapuram R, Kumar V, Negi YS. (2009). Recent development in natural fiber reinforced polypropylne composites, Journal of Reinforced Plastics and Composities, 8 (10), 1169-1189

Palungan, M. B., Soenoko, Y. S. Irawan, A. Purnowidodo (2015). Mechanical properties of king pineapple fiber (Agave Cantula Roxb) as A result of fumigation treatment. Australian journal of basic and applied sciences 9:560-63

Akil H.M., Omar., Mazuki A.A.M., Safiee S., Ishak Z.A.M., Abu Bakar A. 2011. Kenaf Fiber Reinforced Composites: A review, Material and design, 32:4107-4121

Dittenber D.B. and H.V.S. Ganga Rao. 2012. Critical review of recent publications on use of natural composites in infrastructure. Composites part A43 (8):1419-29

Hermanson G.T., 2008. Bioconjugate Techniques, Second edition, Elsevier’s Science &Technology Rights. United Kingdom

Islam, M. R. & Beg, M. D. H. (2010). Effect Of Coupling Agent On Mechanical Properties Of Composite From Kenaf and Rcycled Polypropylne. National Conference In Mechanical Engineering Research and Postgraduate Studies. Malaysia: University Malaysia Pahang, pp 871-875

Raharjo, W. W., Soenoko, R., Irawan, Y. S., & Suprapto, A. (2017). The Influence of Chemical Treatments on Cantala Fiber Properties and Interfacial Bonding of Cantala Fiber / Recycled High Density Polyethylene (rHDPE). Journal of Natural Fibers, 0(0), 1–14.

Thakur, K. V., Thakur, K. M., Gupta , K. R. (2014). Review: Raw Natural Fiber-Based Polymer Composites. International Journal of Polymer. 19: 256-271

Zhou F., G. Cheng and B. Jiang. (2014). Effect of silane treatment on microstructure of sisal fibers, Applied Surface Science 292:806-12

Gan, H. L., L. Tian, and C.H.Yi. (2014). Effect of sisal fiber surface treatments on sisal fiber reinforced polypropylene (PP) composites. Advance Materials Research 906:167-77

Setyabudi, S. A., Makabe, C., Fujikawa, M., Tohkubo, T. (2011). Fatique and Static Fracture of Machineable C/C Composites. Journal of Solid Mechanichs and Materials Engineering Vol. 5, No. 11, 640-654.




  • There are currently no refbacks.

Copyright (c) 2017 JEMMME

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