Abstract
A comparison is made between the effects of natural rubber (NR), liquid natural rubber (LNR), and recycled natural rubber (rNR) in the filled epoxy systems on the physical, mechanical, thermal, and electrical performances of filled epoxy systems. The results show that flexural strength and modulus values were improved. The toughness properties of the filled epoxy system were enhanced with NR phases (72 MPa, 2317 MPa, 4.2 MPa.m½), as compared to those with LNR (55 MPa, 2100 MPa, 3.2 MPa.m½) and rNR (52 MPa, 2000 MPa, 2.3 MPa.m½) at 5 vol.%. Scanning electron micrograph (SEM) analysis revealed that the particle sizes of NR phases dispersed within the epoxy matrix were smaller and more uniform (0.29–1.65 μm) as compared to those with LNR (0.64–3.57 μm) and rNR (≥250 μm) phases. The incorporation of NR, LNR, and rNR phases improved the thermal stability of the filled system. This is attributed to more heat energy being needed to overcome good interfacial bonding between epoxy matrices and the small NR phases. X-ray diffraction analysis results showed that the filled epoxy/NR/GNP system has higher 2θ values, indicating that d-spacing in GNP nano-fillers has the closer distance. Electrical bulk conductivity values of filled epoxy/NR/GNP systems were the highest, 4.50 × 10−3 1/Ω.cm at 20 vol.%. Small NR phases acted as elastomer spacers, which provided better GNP packing efficiency and realigned the GNP nano-fillers to form more effective conductive pathways for electron transport.
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References
Ahmad HS, Ismail H, Rashid AA (2016) Tensile properties and morphology of epoxidized natural rubber/recycled acrylonitrile-butadiene rubber (ENR 50/NBRr) blends. Procedia Chem 19:359–365. https://doi.org/10.1016/j.proche.2016.03.024
Allahbakhsh A, Mazinani S, Kalaee MR et al (2013) Cure kinetics and chemorheology of EPDM/graphene oxide nanocomposites. Thermochim Acta 563:22–32. https://doi.org/10.1016/j.tca.2013.04.010
Arshad MA, Maaroufi A, Benavente R et al (2014) Kinetics of the thermal decomposition mechanisms of conducting and non-conducting epoxy/Al composites. J Mater Environ Sci 5:1342–1354
Cantoni B, Cappello Riguzzi A, Turolla A et al (2021) Bisphenol A leaching from epoxy resins in the drinking water distribution networks as human health risk determinant. Sci Total Environ 783:146908. https://doi.org/10.1016/j.scitotenv.2021.146908
Chawalitsakunchai W, Dittanet P, Loykulnant S et al (2021) Properties of natural rubber reinforced with nano cellulose from pineapple leaf agricultural waste. Mater Today 28:102594. https://doi.org/10.1016/j.mtcomm.2021.102594
Chen J, Cui X, Sui K et al (2017) Balance the electrical properties and mechanical properties of carbon black filled immiscible polymer blends with a double percolation structure. Compos Sci Technol 140:99–105. https://doi.org/10.1016/j.compscitech.2016.12.029
Du J, Cheng HM (2012) The fabrication, properties and uses of graphene/polymer composites. Macromol Chem Phys 213:1060–1077. https://doi.org/10.1002/macp.201200029
Fuad MA, Yaakob I, Ishak ZM et al (1993) Density measurement of rice husk ash filler particles in polypropylene composites. Polym Test 12:107–112. https://doi.org/10.1016/0142-9418(93)90033-L
Hong SG, Chan CK (2004) The curing behaviors of the epoxy/dicyanamide system modified with epoxidized natural rubber. Thermochim Acta 417(1):99–106. https://doi.org/10.1016/J.TCA.2003.12.015
Huang J, Mao C, Zhu Y (2014) Control of carbon nanotubes at the interface of a co-continuous immiscible polymer blend to fabricate conductive composites with ultralow percolation thresholds. Carbon 73:267–274. https://doi.org/10.1016/j.carbon.2014.02.063
Ilyas RA, Sapuan SM, Jailani AK et al (2021a) Introduction to recycling of polymers and metal composites. In: Ilyas RA, Sapuan SM, Bayraktar E (eds) Recycling of plastics, metals, and their composites, 1st edn. CRC Press/Taylor & Francis Group, Boca Raton
Ilyas RA, Sapuan SM, Bayraktar E et al (2021b) Recycling of plastics, metals, and their composites, 1st edn. CRC Press, Boca Raton. https://doi.org/10.1201/9781003148760
Jansen BJP, Tamminga KY, Meijer HEH et al (1999) Preparation of thermoset rubbery epoxy particles as novel toughening modifiers for glassy epoxy resins. Polymer 40:5601–5607. https://doi.org/10.1016/S0032-3861(98)00774-5
Jin FL, Park SJ (2012) Thermal properties of epoxy resin/filler hybrid composites. Polym Degrad Stab 97:2148–2153. https://doi.org/10.1016/j.polymdegradstab.2012.08.015
Jurablu S, Farahmandjou M, Firoozabadi TP et al (2015) Sol-gel synthesis of zinc oxide (ZnO) nanoparticles: study of structural and optical properties. J Sci Islam Repub Iran 26:281–285
Kam KW, Teh PL, Husseninsyah S et al (2017) The effect of graphene and natural rubber content on mechanical and electrical conductivity properties of epoxy/natural rubber/graphene conductive materials. Mater Sci Forum 888:209–215. https://doi.org/10.4028/www.scientific.net/MSF.888.209
Kam KW, Teh PL, Osman H et al (2018) Comparison study: effect of un-vulcanized and vulcanized NR content on the properties of two-matrix filled epoxy/natural rubber/graphene nano-platelets system. J Polym Res 25:15. https://doi.org/10.1007/s10965-017-1418-x
Kam KW, Teh PL, Yeoh CK (2021) Comparison study: the effect of unmodified and modified graphene nano-platelets (GNP) on the mechanical, thermal, and electrical performance of different types of GNP-filled materials. Polym Adv Technol 32(9):3588–3608. https://doi.org/10.1002/pat.5368
Khanam PN, Ponnamma D, Al-Madeed MA et al (2015) Graphene-based polymer nanocomposites in electronic: electrical properties of graphene polymer nanocomposites. Springer
Krishna Kumar KS, Varuni SJ, Promsung R et al (2021) Synergistic effects of soap nut extract and glutaraldehyde on the properties of natural rubber: a waste to wealth approach. Ind Crop Prod 172:114063. https://doi.org/10.1016/j.indcrop.2021.114063
Kumar KD, Kothandaraman B (2008) Modification of (DGEBA) epoxy resin with maleated depolymerised natural rubber. Express Polym Lett 2:302–311. https://doi.org/10.3144/expresspolymlett.2008.36
Kutz M (2002) Handbook of materials selection. Wiley. https://doi.org/10.1002/9780470172551
Mao C, Zhu Y, Jiang W (2012) Design of electrical conductive composites: tuning the morphology to improve the electrical properties of graphene filled immiscible polymer blends. ACS Appl Mater Interfaces 4:5281–5286. https://doi.org/10.1021/am301230q
Mathew VS, Sinturel C, George SC et al (2010) Epoxy resin/liquid natural rubber system: secondary phase separation and its impact on mechanical properties. J Mater Sci 45:1769–1781. https://doi.org/10.1007/s10853-009-4154-8
Mathew VS, Jyotishkumar P, George S et al (2012) High performance HTLNR/epoxy blend-phase morphology and thermo-mechanical properties. J Appl Polym Sci 125:804–811. https://doi.org/10.1002/app.35446
Mohamad N, Sharafina ZN, Ab Maulod HE et al (2013) Morphological and mechanical properties of polypropylene/epoxidized natural rubber thermoplastic vulcanizates treated with maleic anhydride-grafted polypropylene. Int J Automot Mech Eng 8:1305–1315. https://doi.org/10.15282/ijame.8.2013.19.0107
Ozturk A, Kaynak C, Tincer T (2001) Effects of liquid rubber modification on the behavior of epoxy resin. Eur Polym J 37:2353–2363. https://doi.org/10.1016/S0014-3057(01)00158-6
Pan Y, Liu X, Hao X et al (2016) Enhancing the electrical conductivity of carbon black-filled immiscible polymer blends by tuning the morphology. Eur Polym J 78:106–115. https://doi.org/10.1016/j.eurpolymj.2016.03.019
Pargi MNF, Teh PL, Hussiensyah S et al (2015) Recycled-copper-filled epoxy composites: the effect of mixed particle size. Int J Mech Mater Eng 10:3. https://doi.org/10.1186/s40712-015-0030-2
Phinyocheep P, Saelao J, Buzare JY (2007) Mechanical properties, morphology and molecular characteristics of poly(ethylene terephthalate) toughened by natural rubber. Polymer 48:5702–5712. https://doi.org/10.1016/j.polymer.2007.07.016
Phua JL, Teh PL, Ghani SA et al (2017) Influence of thermoplastic spacer on the mechanical, electrical, and thermal properties of carbon black filled epoxy adhesives. Polym Adv Technol 28:345–352. https://doi.org/10.1002/pat.3894
Puglia D, Maria HJ, Kenny JM et al (2013) Clay nanostructure and its localization in epoxy/liquid rubber blend. RSC Adv 3:24634–24643. https://doi.org/10.1039/C3RA44844D
Radabutra S, Khemthong P, Saengsuwan S (2021) Effect of silane coupling agent pretreatment on the properties of rice straw particleboard bonded with prevulcanized natural rubber latex. J Rubber Res 24:157–163. https://doi.org/10.1007/s42464-021-00081-z
Rotrekl J, Sikora A, Kaprálková L et al (2013) Effect of an organoclay on the reaction-induced phase-separation in a dynamically asymmetric epoxy/PCL system. Express Polym Lett 7(2013):1012–1019. https://doi.org/10.3144/expresspolymlett.2013.99
Seng LY, Ahmad S, Rasid R et al (2011) Effect of liquid natural rubber (LNR) on the mechanical properties of LNR toughened epoxy composite. Sains Malaysiana 40:679–683
Tan SK, Ahmad S, Chia CH et al (2013) A comparison study of liquid natural rubber (LNR) and liquid epoxidized natural rubber (LENR) as the toughening agent for epoxy. Am J Mater Sci 3(3):55–61. https://doi.org/10.5923/j.materials.20130303.02
Thomas R, Yumei D, Yuelong H et al (2008) Miscibility, morphology, thermal and mechanical properties of a DGEBA based epoxy resin toughened with a liquid rubber. Polymer 49:278–294. https://doi.org/10.1016/j.polymer.2007.11.030
Valentini L, Bon SBB, Lopez-Manchado MA et al (2016) Synergistic effect of graphene nanoplatelets and carbon black in multifunctional EPDM nanocomposites. Compos Sci Technol 128:123–130. https://doi.org/10.1016/j.compscitech.2016.03.024
Verma D, Gope PC, Shandilya A et al (2014) Mechanical-thermal-electrical and morphological properties of graphene reinforced polymer composites: a review. Trans Indian Inst Metals 67:803–816. https://doi.org/10.1007/s12666-014-0408-5
Wang D, Zhang X, Zha JW et al (2013a) Dielectric properties of reduced graphene oxide/polypropylene composites with ultralow percolation threshold. Polymer:1916–1922. https://doi.org/10.1016/j.polymer.2013.02.012
Wang X, Jin J, Song M (2013b) An investigation of the mechanism of graphene toughening epoxy. Carbon 65:324–333. https://doi.org/10.1016/j.carbon.2013.08.032
Yue L, Pircheraghi G, Monemian SA et al (2014) Epoxy composites with carbon nanotubes and graphene nanoplatelets – dispersion and synergy effects. Carbon 78:268–278. https://doi.org/10.1016/j.carbon.2014.07.003
Zhang C, Wang W, Huang Y et al (2013) Thermal, mechanical and rheological properties of polylactide toughened by epoxidized natural rubber. Mater Des 45:198–205. https://doi.org/10.1016/j.matdes.2012.09.024
Zhou H, Xu S (2014) A new method to prepare rubber toughened epoxy with high modulus and high impact strength. Mater Lett 121:238–240. https://doi.org/10.1016/j.matlet.2014.01.160
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The authors wish to express their gratitude for the support of the Ministry of Higher Education (MOHE). The financial support of Fundamental Research Grant Scheme (FRGS) under grant number FRGS/1/2018/TK05/UNIMAP/02/13 is gratefully acknowledged.
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Kam, K.W., Teh, P.L., Yeoh, C.K. (2023). Comparison Between Natural Rubber, Liquid Natural Rubber, and Recycled Natural Rubber as Secondary Matrix in Epoxy/Natural Rubber/Graphene Nano-platelet System. In: Ismail, H., S. M., S., R. A., I. (eds) Recycled Polymer Blends and Composites. Springer, Cham. https://doi.org/10.1007/978-3-031-37046-5_16
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