Perilaku water absorption pada komposit hybrid serat agel tenun dan serat gelas

H. Hestiawan, J. Jamasri, K. Kusmono, A. Puspawan


This study aimed to investigate the effect of alkali treatment and stacking sequences on water absorption and flexural strength in woven agel and glass fibers reinforced hybrid composites. The research materials are woven agel fiber, E-200 glass fiber, unsaturated polyester resin Yukalac 157 BQTN, and catalyst of methyl ethyl ketone peroxide (MEKP). The alkali treatment is carried out on the woven agel fibers by soaking the fiber in 5% NaOH solution for 1 hour. Then the fiber is washed with fresh water and dried for 48 hours. Manufacturing techniques used vacuum bagging with suction pressure of 70 cmHg at room temperature. The amount of reinforcing fiber 7 fibers consists of 3 glass fibers and 4 agel woven fibers. The water absorption test uses a 3.5% NaCl solution for 1080 hours at room temperature. Water absorption test specimens based on ASTM D570 standard. The research results showed that alkali treatment with glass fiber arrangement on the specimen surface effectively decreased water absorption and increased the flexural strength of woven agel and glass fibers hybrid composites. This can be seen from the decrease in water content in equilibrium by 8.67%, the diffusion coefficient of 5.74 x 10-12 m2/s, and the flexural strength before and after immersion, which are 135 MPa and 125 MPa respectively.


Alkali treatment; Hybrid composite; Vacuum bagging; Water absorption; Woven agel fiber

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Bledzki A.K., Faruk O., Sperber V. E., 2006, Cars from bio-fibres, Macromolecular Materials and Engineering, 291(5), 449–457.

Bledzki A.K., Gassan J., 1999, Composites reinforced with cellulose based fibres, Progress in Polymer Science, 24, 221–74.

Dan-Mallam Y., Abdullah M.Z., Yusoff P. S. M. M., 2014, The effect of hybridization on mechanical properties of woven kenaf fiber reinforced polyoxymethylene composites, Polymer Composites, 35, 1900–1910.

Dhakal H.N., Zhang Z.Y., Richardson M.O.W., 2007, Effect of water absorption on the mechanical properties of hemp fibre reinforced unsaturated polyester composites, Composites Science and Technology, 67, 1674–1683.

Hassan A., Salema A.A., Ani F.N., Bakar A.A., 2010, A review on oil palm empty fruit bunch fiber-reinforced polymer composite materials, Polymer Composites, 31, 2079 – 2101.

llman K.A. Jamasri, Kusmono, Hestiawan H., 2018, Effect of stacking sequences and silane treatments on the mechanical properties of agel leaf/jute/glass fiber-reinforced hybrid composite, Composites: Mechanics, Computations, Applications: An International Journal, 9(4), 311–329.

Ishak Z.A.M., Ariawan D., Salim M.S. Mat Taiba R., Thirmizir M.Z.A., Phua Y.J., 2014, The effect ofalkalization on the mechanical and water absorption properties of non-woven kenaf fiber/unsaturated-polyester composites produced by resin-transfer molding (RTM), Proceeding of European Conference on Composite Materials 16th, Spanyol.

Kushwaha P.K., Kumar R., 2010, Studies on water absorption of bamboo-epoxy composites: Effect of silane treatment of mercerized bamboo, Journal of Applied Polymer Science, 115, 1846-1852.

Kusmono, Ishak Z.A.M., Chow W.S., Takeichi T., Rochmadi, 2010, Water absorption behavior of different tpes of organophilic montmorillonite-filled polyamide 6/polypropylene nanocomposites, Polymer Composites, 2010, 195-202.

Liao K., Schultheisz C. R., Hunston D. L., 1999, Long-term environmental fatigue of pultruded glass-fiber-reinforced composites under flexural loading, International Journal of Fatigue, 21, 485–495.

Mishra S., Misra M., Tripathy S.S., Nayak S.K., Mohanty A.K., 2001, Graft copolymerization of acrylonitrile on chemically modified sisal fibers, Macromolecular Materials and Engineering, 286(2), 107- 113.

Mohan T.P, Kanny K., 2011, Water barrier properties of nanoclay filled sisal fibre reinforced epoxy composites, Composites: Part A, 42, 385–393.

Nguong C. W., Lee S. N. B., Sujan D., 2013, A review on natural fibre reinforced polymer composites, International Journal of Chemical, Nuclear, Metallurgical and Materials Engineering, 7(1), 33 – 40.

Razera I.A.T., Frollini E., 2004, Composites based on jute fibers and phenolic matrices: Properties of fibers and composites, Journal of Applied Polymer Science, 91(2), 1077–1085.

Silva R.V., Aquino E.M.F., Rodrigues L.P.S., Barros A.R.F., 2009, Curaua/glass hybrid composite: The effect of water aging on the mechanical properties, Journal of Reinforced Plastics and Composites, 28(15), 1857-1868.

Sreekala M.S., Thomas S., 2003, Effect of fibre surface modification on water-sorption characteristics of oil palm fibre, Composites Science and Technology, 63, 861–869.

Zamri M.H., Akil H.M., Bakar A.A., Ishak Z.A.M., Cheng, L.W., 2012, Effect of water absorption on pultruded jute/glass fiber-reinforced unsaturated polyester hybrid composites, Journal of Composite Materials, 46, 51-61.



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