Sains Malaysiana 46(4)(2017):
623–628
http://dx.doi.org/10.17576/jsm-2017-4604-15
Preparation and Characterization
of Fe3O4/Regenerated
Cellulose Membrane
(Penyediaan dan Pencirian
Membran Fe3O4/Selulosa Terjana Semula)
HATIKA
KACO1,
KHAIRUNNISA
WAZNAH
BAHARIN1,
SARANI
ZAKARIA1*,
CHIN
HUA
CHIA1,
MOHD
SHAIFUL
SAJAB2,
SHARIFAH
NABIHAH
SYED
JAAFAR1
& SIN YEE GAN1
1Bioresources and Biorefinery
Laboratory, Faculty of Science and Technology, Universiti Kebangsaan
Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
2Research Center for Sustainable
Process Technology (CESPRO), Faculty of Engineering and Built Environment,
Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul
Ehsan
Malaysia
Diserahkan: 13 April
2016/Diterima: 19 Ogos 2016
ABSTRACT
In this study, magnetic
cellulose membranes (MCM) have been prepared by using
cotton linter as cellulose source and NaOH/urea as cellulose solvent
at different magnetite content. Cellulose was dissolved in pre-cooled
NaOH/urea solvent at -13°C to form cellulose solution. The cellulose
solution then was mix with magnetite (Fe3O4)
nanoparticles synthesized via co-precipitation method of Fe2+ and
Fe3+ in the presence of sodium hydroxide
(NaOH) to form MCM. The MCMs
formed at different percentage of Fe3O4 i.e.,
10, 20 and 30%. Analysis from vibrating sample magnetometer (VSM)
shows that the saturation magnetization of the MCM increase
as the percentages of Fe3O4 nanoparticles
increased. However, the addition of Fe3O4 nanoparticles
in the regenerated cellulose membrane has decreased the crystallinity
index of MCM.
The surface morphology of the MCM showed that the Fe3O4 nanoparticles
were dispersed in the pore of the membrane. Tensile test showed
decreasing in the tensile strength of the cellulose membrane with
the addition of Fe3O4 nanoparticle.
Keywords: Dissolution;
Fe3O4;
magnetic cellulose membrane; pre-cooled
ABSTRAK
Dalam kajian ini, membran
selulosa bermagnet (MSM) telah disediakan dengan menggunakan linter
kapas sebagai sumber selulosa dan NaOH/urea sebagai pelarut selulosa
pada kandungan magnetit yang berbeza. Selulosa dilarutkan dalam
pelarut NaOH/urea yang telah dilakukan pra-penyejukan pada suhu
-13°C untuk menghasilkan larutan selulosa. Larutan selulosa tersebut
kemudiannya dicampurkan dengan nanozarah magnetit (Fe3O4)
yang disintesis melalui kaedah pemendakan Fe2+ dan
Fe3+ dengan kehadiran natrium hidroksida
(NaOH) untuk menghasilkan MSM. MSM yang
terhasil mempunyai peratusan Fe3O4 yang
berbeza iaitu, 10, 20 dan 30 %. bt. Analisis daripada magnetometer
getaran sampel (VSM) menunjukkan kemagnetan tepu bagi MSM bertambah
apabila peratusan zarah magnetit meningkat. Walau bagaimanapun,
penambahan zarah magnetit dalam membran selulosa terjana semula
telah menjatuhkan indeks penghabluran MSM.
Morfologi permukaan MSM menunjukkan bahawa zarah magnetit
tersebar di atas liang membran tersebut. Ujian tegangan menunjukkan
pengurangan dalam kekuatan tegangan membran selulosa dengan penambahan
nanozarah magnetit.
Kata Kunci: Fe3O4; membran selulosa
bermagnet; pelarutan; pra-penyejukan
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*Pengarang
untuk surat-menyurat; email: szakaria@ukm.edu.my
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