Sains Malaysiana 45(12)(2016): 1981–1986
http://dx.doi.org/10.17576/jsm-2016-4512-23
Kesan Triali Isosianurat
(TIAC) Terhadap Sifat Tegangan
Filem Poly L-Laktid Asid (PLLA) yang Diiradiasi Gamma
dan Alur Elektron
(The Effect of Trially
Isocyanurate (TIAC) on the Tensile
Property of Poly L-Lactide Acid (PLLA)
Film Irradiated under
Gamma and Electron Beam)
Mohd Reusmaazran bin Yusof1, Roslinda Shamsuddin2*, Yusof Abdullah1 & Norzita bt Yaacob1
1Kumpulan Teknologi
Bahan, Agensi Nuklear Malaysia, Bangi, 43000 Kajang, Selangor Darul
Ehsan,
Malaysia
2Program Sains
Bahan, Pusat Pengajian Fizik Gunaan, Fakulti Sains & Teknologi,
Universiti
Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
Diserahkan:
21 Jun 2016/Diterima:
19 Oktober 2016
ABSTRAK
PLLA merupakan biodegrasi polimer yang mempunyai aplikasi yang meluas
dalam pelbagai bidang industri dan perubatan. Dalam kajian ini,
PLLA telah
dicampurkan dengan triali isosianurat (TIAC) antara 1 hingga 6 v/v% bagi
melihat perubahan sifat tegangan dan terikan filem PLLA.
TIAC
biasanya digunakan sebagai agen taut silang dan keplastikan
untuk mengubah sifat polimer. Campuran PLLA-TIAC telah diiradiasi pada
10 kGy di bawah alur elektron (EB) dan gamma (γ). Keputusan
menunjukkan kekuatan tegangan (tegasan maksimum) menurun dengan
peningkatan kandungan TIAC di dalam PLLA tetapi
meningkat sedikit pada 4 v/v% TIAC bagi PLLA iradiasi
dan tanpa iradiasi. Manakala nilai terikan didapati meningkat pada
TIAC
2 v/v% dan menurun apabila TIAC ditambah melebihi 2% v/v%
terutamanya bagi PLLA yang diiradiasikan. Daripada keputusan
DSC terdapat perubahan pada suhu peralihan kaca, Tg,
suhu penghabluran sejuk, Tc, entalpi penghabluran sejuk, Hc dan
suhu peleburan, Tm menunjukkan berlaku perubahan pergerakan
rantaian PLLA dan fasa penghabluran dengan kehadiran
TIAC dan sinaran mengion di dalam PLLA.
Perubahan pada puncak penyerapan spektra infra merah jelmaan fourier
(FTIR)
menunjukkan berlaku penggantian atau kemasukkan molekul TIAC ke
dalam rantian PLLA.
Kata kunci: Iradiasi elektron;
iradiasi gamma; kekuatan tegangan; PLLA;
TIAC
ABSTRACT
PLLA is a biodegradable polymer that is widely used in industrial and
medical field. In this works, PLLA was mixed with 1-6 v/v% with
(TIAC) to investigate the changes in tensile and strains
properties of the PLLA film. PLLA commonly
used as plasticizer or crosslinked agent to change the polymer property.
PLLA
and TIAC mixture was irradiated under 10
kGy doses for both of gamma (γ) and electron beam (EB).
The results showed that the tensile strength (maximum stress) reduce
with the increasing of TIAC amount in the PLLA but slightly increase at
4 v/v% TIAC addition for both irradiated and non-irradiated PLLA.
Strain was found to increase at 2 v/v%. TIAC but decreased when more than
2 v/v% TIAC was added for irradiated PLLA.
DSC
results showed the changes in glass transition temperature,
Tg,
cold crystallization enthalpy, Hc, cold crystallization temperature,
Tc and melting temperature, Tm indicate
the changes in mobility of PLLA chain and crystallization regions
with present of TIAC and ionizing radiation in PLLA.
The changes in fourier transform infra-red (FTIR)
absorptions peak indicate the penetrating of TIAC molecules
into the PLLA chains.
Keywords: Electron beam irradiation; gamma irradiation; PLLA; tensile strength; TIAC
RUJUKAN
Eftekhari, S.,
El Sawi, I., Bagheri, Z.S., Turcotte, G. & Bougherara, H. 2014.
Fabrication and characterization of novel biomimetic PLLA/cellulose/hydroxyapatite
nanocomposite for bone repair applications. Materials Science
and Engineering C 39: 120-125.
Liu, M., Yin,
Y., Fan, Z., Zheng, X., Shen, S., Deng, P., Zheng, C., Teng, H.
& Zhang, W. 2012. The effects of gamma-irradiation 1985
on the structure,
thermal resistance and mechanical properties of the PLA/EVOH blends.
Nuclear Instruments and Methods in Physics Research Section B:
Beam Interactions with Materials and Atoms 274: 139-144.
Loo, S.C.J.,
Ooi, C.P. & Boey, Y.C.F. 2004. Radiation effects on poly(lactide-co-glycolide)
(PLGA) and poly(l-lactide) (PLLA). Polymer Degradation and Stability
83: 259-265.
Lou, T., Wang,
X., Song, G., Gu, Z. & Yang, Z. 2014. Fabrication of PLLA/β-TCP
nanocomposite scaffolds with hierarchical porosity for bone tissue
engineering. International Journal of Biological Macromolecules
69: 464-470.
Malinowski,
R. 2016. Effect of high energy β-radiation and addition of
triallyl isocyanurate on the selected properties of polylactide.
Nuclear Instruments and Methods in Physics Research Section B:
Beam Interactions with Materials and Atoms 377: 59-66.
Malinowski,
R., Rytlewski, P., Janczak, K., Raszkowska- Kaczor, A., Moraczewski,
K., Stepczyńska, M. & Żuk, T. 2015. Studies on functional
properties of PCL films modified by electron radiation and TAIC
additive. Polymer Testing 48: 169-174.
Mat Uzir, W.,
Azman, H., Akos, N.I., Nurhayati, A.Z. & Kayathre, K. 2015.
Mechanical, thermal and chemical resistance of epoxidized natural
rubber toughened polylactic acid blends. Sains Malaysiana 44:
1615-1623.
Milicevic, D.,
Milivojevic, D. & Suljovrujic, E. 2012. The influence of the
initial preparation and crystallinity on the free radical evolution
in gamma irradiated PLLA. Radiation Physics and Chemistry 81:
1361-1365.
Milicevic, D.,
Trifunovic, S., Dojcilovic, J., Ignjatovic, N. & Suljovrujic,
E. 2010. The influence of gamma radiation on the molecular weight
and glass transition of PLLA and HAp/ PLLA nanocomposite. Nuclear
Instruments and Methods in Physics Research Section B: Beam Interactions
with Materials and Atoms 268: 2744-2749.
Nagasawa, N.,
Kaneda, A., Kanazawa, S., Yagi, T., Mitomo, H., Yoshii, F. &
Tamada, M. 2005. Application of poly(lactic acid) modified by radiation
crosslinking. Nuclear Instruments and Methods in Physics Research
Section B: Beam Interactions with Materials and Atoms 236: 611-616.
Nur Aimi, M.N.,
Anuar, H., Maizirwan, M., Sapuan, S.M., Wahit, M.U. & Zakaria,
S. 2015. Preparation of durian skin nanofibre (DSNF) and its effect
on the properties of polylactic acid (PLA) biocomposites. Sains
Malaysiana 44: 1551-1559.
Quynh, T.M.,
Mitomo, H., Nagasawa, N., Wada, Y., Yoshii, F. & Tamada, M.
2007. Properties of crosslinked polylactides (PLLA & PDLA) by
radiation and its biodegradability. European Polymer Journal
43: 1779-1785.
Raghu, S., Archana,
K., Sharanappa, C., Ganesh, S. & Devendrappa, H. 2016. Electron
beam and gamma ray irradiated polymer electrolyte films: Dielectric
properties. Journal of Radiation Research and Applied Sciences
9: 117-124.
Rodenas-Rochina,
J., Vidaurre, A., Castilla Cortázar, I. & Lebourg M. 2015. Effects
of hydroxyapatite filler on long-term hydrolytic degradation of
PLLA/PCL porous scaffolds. Polymer Degradation and Stability
119: 121-131.
Rytlewski, P.,
Malinowski, R., Moraczewski, K. & Żenkiewicz, M. 2010.
Influence of some crosslinking agents on thermal and mechanical
properties of electron beam irradiated polylactide. Radiation
Physics and Chemistry 79: 1052-1057.
Said, H.M. 2013.
Effects of gamma irradiation on the crystallization, thermal and
mechanical properties of poly(l-lactic acid)/ethylene-co-vinyl acetate
blends. Journal of Radiation Research and Applied Sciences 6:
11-20.
Suljovrujić,
E., Ignjatović, N., Uskoković, D., Mitrić, M., Mitrović,
M. & Tomić, S. 2007. Radiation-induced degradation of hydroxyapatite/poly
L-lactide composite biomaterial. Radiation Physics and Chemistry
76: 722-728.
Yang, S.l.,
Wu, Z.H., Yang, W. & Yang, M.B. 2008. Thermal and mechanical
properties of chemical crosslinked polylactide (PLA). Polymer
Testing 27: 957-963.
Zhang, X., Kotaki,
M., Okubayashi, S. & Sukigara, S. 2010. Effect of electron beam
irradiation on the structure and properties of electrospun PLLA
and PLLA/PDLA blend nanofibers. Acta Biomaterialia 6: 123-129.
*Pengarang
untuk surat-menyurat; email: linda@ukm.edu.my
|