Sains Malaysiana 48(5)(2019): 1121–1128

http://dx.doi.org/10.17576/jsm-2019-4805-21

 

Kesan Penambahan Kepingan Nanozarah Grafin terhadap Sifat Mekanik dan Terma Hibrid Komposit Serabut Sansevieria-Getah Asli-Polietilena Berketumpatan Tinggi

(Effects of Addition Graphene Nanoplatlet on the Mechanical Properties and Thermal Hybrid Composite Fibre Sansevieria Natural Rubber-High Density Polyethylene)

 

NURZAM EZDIANI ZAKARIA2,3, ISHAK AHMAD1,2, WAN NAZRI WAN BUSU3, KHAIRUNNIZAH HAZILA KHALID3 & AZIZAH BAHARUM1,2*

 

1Pusat Penyelidikan Polimer (PORCE), Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

 

2Pusat Pengajian Sains Kimia dan Teknologi Makanan, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

 

3Program Perekaan, Pemprosesan dan Pembungkusan Makanan, Pusat Penyelidikan Sains Teknologi, Makanan Institut Penyelidikan dan Kemajuan Pertanian Malaysia, Peti Surat 12301 Pejabat Pos Besar,

50774 Kuala Lumpur, Malaysia

 

Received: 19 September 2018/Accepted: 15 March 2019

 

ABSTRAK

Kajian ini dilakukan untuk mengkaji kesan penghibridan kepingan nanozarah grafin (GNP) ke atas sifat mekanik, morfologi dan terma komposit Sansevieria trifasciata-getah asli-polietilena ketumpatan tinggi (STF-NR-HDPE). Pemprosesan penghibridan komposit STF-NR-HDPE dan GNP dilakukan dengan menggunakan mesin pengadun dalaman. Tahap pengisian sebanyak 20 % bt. STF ke atas matriks (NR/HDPE) telah dilakukan dalam kajian ini dengan variasi GNP yang digunakan adalah antara 1-10 % bt. Adunan komposit yang terhasil ditekan dengan mesin penekan panas untuk mendapatkan sampel ujian berketebalan 1 mm dan 3 mm. Sampel dinilai melalui ujian tegangan, ujian hentaman Izod, pembelauan sinar-X (XRD) dan kalorimetri pengimbasan berbeza (DSC). Kajian morfologi pula dijalankan dengan menggunakan mikroskop elektron pengimbas pelepasan medan (FESEM). Keputusan menunjukkan bahawa nilai kekuatan regangan dan kekuatan hentaman komposit menunjukkan sedikit penurunan bacaan pada permulaan penambahan amaun GNP tetapi bacaan kebanyakan komposisi kemudiannya menunjukkan peningkatan selepas 5 % bt. tahap pengisian dan ke atas. Modulus tegangan pula secara umumnya menunjukkan peningkatan bacaan dengan penambahan pengisi. Analisis terma dengan menggunakan alat DSC tidak menunjukkan perubahan aliran graf yang ketara terhadap kelakuan terma bahan. Ini kerana STF adalah bahan yang mempunyai kestabilan terma yang baik.

 

Kata kunci: Kepingan nanozarah grafin; komposit hibrid; serabut semula jadi; sifat mekanik

 

ABSTRACT

This research was done to study the effects of graphene nanoplatlet (GNP) hybridization on the mechanical, morphological and thermal properties of Sansevieria trifasciata-natural rubber-high density polyethylene (STF-NR-HDPE) composite. Processing of STF-NR-HDPE with modification of GNP was done by using an internal mixer. Filler loading of 20 wt. % STF into the matrix (NR/HDPE) was introduced in this study with variation of GNP composition used was around 1-10 wt. %. Composite blends obtained were pressed with a hot-press machine to produce samples with 1 mm and 3 mm of thickness. Samples were evaluated via tensile test, Izod impact test, X-Ray Diffraction (XRD) and differential scanning calorimeter (DSC). Morphological study was done by using a field emission scanning electron microscope (FESEM). The results showed that tensile strength and impact strength had decreased at the early stage of GNP addition but the values keep increasing after more than 5 wt. % of GNP were added to the system. Generally, tensile modulus showed an increasing trend with the increment of filler loading. Thermal analysis with DSC did not show any obvious trend towards materials’ thermal behavior. This is due to the good thermal stability characteristic of STF.

 

Keywords: Graphene nanoplatlet; hybrid composites; mechanical properties; natural fiber

REFERENCES

Das, A., Boldt, R., Jurk, R., Jehnichen, D., Fischer, D., Werner Stockelhuber, R. & Heinrich, G. 2014. Nano-scale morphological analysis of grapheme-rubber composites using 3D transmission electron microscopy. Royal Society of Chemistry 18: 9300-9307.

Faruk, O., Bledzki, A.K., Fink, H.P. & Sain, M. 2012. Biocomposites reinforced with natural fibers: 2000-2010. Progress in Polymer Science 37: 1552-1596.

Frasca, D., Schulze, D., Wachtendorf, V., Huth, C. & Schartel, B. 2015. Multifunctional multilayer graphene/elastomer nanocomposites. European Polymer Journal 71: 99-113.

Gao, Y., Picot, O.T., Bilotti, E. & Peijs, T. 2017. Influence of filler size on the properties of poly(lactic acid) (PLA)/graphene nanoplatelet (GNP) nanocomposites. European Polymer Journal 86: 117-131.

Geng, Y., Wang, S.J. & Kim, J.K. 2009. Preparation of graphite nanoplatelets and graphene sheets. Journal of Colloid and Interface Science 336: 592-598.

Hanafi, I., Nizam, J.M. & Abdul Khalil, H.P.S. 2001. The effect of a compatibilizer on the mechanical properties and mass swell of white rice husk ash filled natural rubber/linear low density polyethylene blends. Polymer Testing 20(2): 125-133.

He, F., Mensitieri, G., Lavorgna, M., Luna, M.S., Filippone, G., Xia, H., Esposito, R. & Scherillo, G. 2017. Tailoring gas permeation and dielectric properties of bromobutyl rubber - Graphene oxide nanocomposites by inducing an ordered nanofiller microstructure. Composites Part B 116: 361-368.

Idumah, C.I. & Hassan, A. 2016. Characterization and preparation of conductive exfoliated graphene nanoplatelets kenaf fibre hybrid polypropylene composites. Synthetic Metals 212: 91-104.

Kang, H., Tang, Y., Yao, L. Yang, F., Fang, Q. & Hui, D. 2017. Fabrication of graphene/natural rubber nanocomposites with high dynamic properties through convenient mechanical mixing. Composites Part B 112: 1-7.

Kanimozhi, M. 2011. Investigating the physical characteristics of Sansevieria trifasciata fibre. International Journal of Scientific and Research Publications 1(1): 1-4.

Kumar, K.H.G. & Xavior, A.M. 2017. Processing and characterization of Al 6061 - graphene nanocomposites. Materials Today: Proceeding 4: 3308-3314.

Muhammad Razlan, Z., Muhammad Helmi, A.K., Hazizan, M.A. & Mohd Zharif, M.T. 2017. Comparative study of graphene nanoparticle and multiwall carbon nanotube filled epoxy nanocomposites based on mechanical, thermal and dielectric properties. Composites Part B 119: 57-66.

Noor Intan, S.A., Sarani, Z., Kaco, H., Chia, C.H., Wang, C. & Husna Shazwani, A. 2018. Physico-mechanical, chemical composition, thermal degradation and crystallinity of oil palm empty fruit bunch, kenaf and polypropylene fibres: A comparatives study. Sains Malaysiana 47(4): 839-851.

Nor Nabilla, K., Julie Elvyana, R., Norhamidi, M., Abu Bakar, S. & Farhana, M.F. 2018. Pengoptimuman parameter sonikasi dan pengacauan magnetik bagi mendapatkan penyerakan sebati komposit kuprum-grafin berdasarkan sifat morfologi. Sains Malaysiana 47(5): 1039-1043.

Nurul Hidayah, I., Mohd Hafizi, M. & Mariatti, J. 2018. Multi-walled carbon nanotubes/woven kenaf fabric-reinforced epoxy laminated composites. Sains Malaysiana 47(3): 563-569.

Nurzam Ezdiani, Z., Ishak, A., Wan Zarina, W.M. & Azizah, B. 2018. Effects of fibre size on Sansevieria trifasciata/natural rubber/ high density polyethylene biocomposites. Malaysian Journal of Analytical Sciences 22(6): 1057-1064.

Ramanaiah, K., Ratna Prasad, A.V. & Hema Chandra Reddy, K. 2013. Mechanical, thermophysical and fire properties of sansevieria fiber-reinforced polyester composites. Materials and Design 49: 986-991.

Sameer, B.R.K., Kumar, M.A., Murthy, V.N. & Karthikeyan, N. 2015. Development of Sansevieria trifasciata-carbon fiber reinforced polymer hybrid nanocomposites. International Letters of Chemistry, Physics and Astronomy 50: 179-187.

Sathishkumar, T.P., Naveen, J. & Satheeshkumar, S. 2014. Hybrid fiber reinforced polymer composites - A review. Journal of Reinforced Plastics and Composites 33: 454-471.

Shesmani, S., Ashori, A. & Fashapoyeh, M.A. 2013. Wood plastic composite using graphene nanoplatelets. International Journal of Biological Macromolecules 58: 1-6.

Sreenivasan, V.S., Somasundaram, S., Ravindran, D., Manikandan, V. & Narayanasamy, R. 2011. Microstructural, physico-chemical and mechanical characterization of Sansevieria cylindrica fibres - an exploratory investigation. Materials and Design 32: 453-461.

Valentini, L., Bon, S.B, Machado, M.A.L., Verdejo, R., Pappalardo, L., Bolognini, A., Alvino, A., Borsini, S., Berardo, A. & Pugno, N.M. 2016. Synergistic effect of graphene nanoplatelets and carbon black in multifunctional EPDM nanocomposites. Composites Science and Technology 128: 123-130.

 

*Corresponding author; email: azeiss@ukm.edu.my

 

 

 

 

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