Sains Malaysiana 44(3)(2015): 441–448
Thermal
Stability and Decomposition Study of Epoxy/Clay Nanocomposites
(Kestabilan Terma dan Kajian Penguraian Epoksi/Lempung Terubah
Nano)
S. DZUHRI, N.Y. YUHANA*
& M. KHAIRULAZFAR
Department of Chemical and Process Engineering,Faculty of Engineering and Built Environment
Universiti Kebangsaan Malaysia, 43000 Bangi, Selangor Darul
Ehsan, Malaysia
Diserahkan: 5 Mei 2014/Diterima: 3 September 2014
ABSTRACT
This study utilized the incorporation of nanoparticle filler into
an epoxy system to study the effect of different nanosized montmorillonite (MMT)
fillers on the thermal stability and mechanical properties of epoxy. The sample
was prepared using diglycidyl ether of bisphenol A (DGEBA)
with different surface treatments of montmorillonite filler by mechanical
stirring. The results of thermal stability and mechanical properties of
epoxy/clay system obtained from thermal gravimetric analyzer (TGA),
universal testing machine (UTM) and scanning electron microscopy
(SEM)
were discussed. With the same amount of filler introduced into the system,
different thermal stability of epoxy composite can be observed. Bentonite,
which contained other contaminant components, can downgrade the enhanced properties
of the filler.
Keywords: Cloisite; epoxy; montmorillonite; nanocomposite; thermal
stability
ABSTRAK
Kajian ini dijalankan bagi mengaplikasikan pengisi
bersaiz nano ke dalam sistem epoksi yang memberi kesan terhadap
kestabilan terma dan ciri-ciri mekanikalnya. Sampel yang digunakan adalah
daripada epoksi diglicidil eter bisfenol A (DGEBA)
dengan pengisi montmorilonit yang berbeza olahan permukaan melalui
kaedah pengadukan mekanikal. Hasil kestabilan
terma dan ciri-ciri mekanikal sistem epoksi/lempung diperoleh daripada
alat analisis gravimetri terma (TGA), mesin ujian universal dan mikroskopi
elektron imbasan (SEM) dibincangkan dengan teliti.
Dengan jumlah pengisi yang sama, hasil
kestabilan terma yang berbeza dapat diperoleh. Bentonit
yang mengandungi bendasing dapat menurunkan ciri-ciri penambah kekuatan
pengisi tersebut.
Kata kunci: Epoksi; kestabilan terma; kloisit;
montmorilonit; terubah nano
RUJUKAN
Arridge, R.G.C. & Speake, J.H. 1972. Mechanical
relaxation studies of the cure of epoxy resins: 1. Measurement of cure. Polymer 13(9): 443-449.
Becker, O. & Simon, G.P. 2005. Epoxy layered silicate
nanocomposite. Advanced Polymer Science 179: 29-82.
Cárdenas, M.Á., García-López, D.,
García-Vilchez, A., Fernández, J.F., Merino, J.C. & Pastor, J.M. 2009. Synergy between organo-bentonite and nanofillers for
polymer based fire retardant applications. Applied Clay Science 45(3):
139-146.
Carrasco, F. & Pagès, P. 2008. Thermal degradation and
stability of epoxy nanocomposites: Influence of montmorillonite content and
cure temperature. Polymer Degradation and Stability 93(5): 1000-1007.
Chiang, C.L., Chang, R.C. & Chiu, Y.C. 2006. Thermal
stability and degradation kinetic of novel organic/inorganic epoxy hybrid
containing nitrogen/silicon/phosphorus by sol-gel method. Thermochimica Acta 453: 97-104.
Dat, Mohdkhairul Azfar Moh. 2013. Kesan jisim dan olahan
permukaan nanosilika ke atas kinetik pematangan epoksi berpengisi nanozarah
silika. Bachelor Degree in Chemical Engineering Research,
Chemical Engineering, Universiti Kebangsaan Malaysia (Unpublished).
Erdemoğlu, M., Erdemoğlu, S.,
Say?lkan, F., Akarsu, M., Şener, Ş., & Say?lkan, H. 2004. Organo-functional modified pyrophyllite: Preparation, characterisation
and Pb(II) ion adsorption property. Applied Clay
Science 27(1-2): 41-52.
Grillet, A.C., Galy, J., Gerald, J.F. & Pascault, J.P.
1991. Mechanical and viscoelastic properties of epoxy networks cured with
aromatic diamines. Polymer 32(10): 1885-1891.
Gu, A. & Liang, G. 2002. Thermal
degradation behaviour and kinetic analysis of epoxy/montmorillonite
nanocomposites. Polymer Degradation and Stability 80(2): 383-391.
Hussin, F., Aroua, M.K. Daud, W.M.A.W.
2011. Textural characteristics, surface chemistry
and activation of bleaching earth: A review. Chemical Engineering Journal 170(1):
90-106.
Irawan, S. & Samsuri, A. 2007. Drilling mud material cost saving through
utilization of treated Malaysian local bentonite. Mineral
Symposium 2007.
Isik-Gulsac, I., Yilmazer, U. &
Bayram, G. 2003. Impact modified epoxy/montmorillonite
nanocomposites: Synthesis and characterization. Polymer 44(20):
6371-6377.
Ruiz-Hitzky, E., Aranda, P., Álvarez,
A., Santarén, J. & Esteban- Cubillo, A. 2011. Chapter 17 - Advanced materials and new applications of
sepiolite and palygorskite. In Developments in Clay Science, edited by
Galàn Emilio & Singer Arieh, Elsevier. pp. 393-452.
Say?lkan, H., Erdemoğlu, S., Şener, Ş.,
Say?lkan, F., Akarsu, M. & Erdemoğlu, M. 2004. Surface
modification of pyrophyllite with amino silane coupling agent for the removal
of 4-nitrophenol from aqueous solutions. Journal of Colloid and
Interface Science 275(2): 530-538.
Tcherbi-Narteh, A., Hosur, M., Triggs, E. & Jeelani, S.
2013. Thermal stability and degradation of diglycidyl ether of bisphenol A epoxy modified with different nanoclays exposed to UV
radiation. Polymer Degradation and Stability 98(3): 759-770.
Yuhana, N.Y., Ahmad, S., Kamal, M.R.,
Jana, S.C. & Shamsul Bahri, A.R. 2012. Thermal stability and morphology of room-temperature cured PMMA grafted natural
rubber toughened epoxy/layered silicate nanocomposite. Polymer
Processing Society 28th Annual Meeting, Pattaya (Thailand).
Zhou, Y., Pervin, F., Rangari, V.K. & Jeelani, S. 2007.
Influence of montmorillonite clay on the thermal and mechanical properties of
conventional carbon fiber reinforced composites. Journal of Materials
Processing Technology 191(1-3): 347-351.
*Pengarang
untuk surat-menyurat; email: yuliana@eng.ukm.my
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