Sains Malaysiana 45(7)(2016): 1169–1176
Characterization of HEC/PANI Film as a
Potential Electroactive Packaging with pH Sensor
(Pencirian Filem HEC/PANI sebagai Potensi Pembungkus Elektroaktif dengan
Pengesanan pH)
NOORANIS MUSTAPHA1,
NOZIEANA
KHAIRUDDIN1,
IDA
IDAYU
MUHAMAD1*,
SHAHRIR HASHIM1
& MD. BAZLUL MOBIN SIDDIQUE2
1Department of Bioprocess
and Polymer Engineering, Faculty of Chemical and Energy Engineering
Universiti Teknologi Malaysia, 81310 Skudai,
Johor Darul Takzim, Malaysia
2Division of Chemical
Engineering, Faculty of Engineering, Computing and Science
Swinburne University
of Technology, Sarawak Campus, Jalan Simpang Tiga, 93350 Kuching, Sarawak,
Malaysia
Diserahkan: 12 Mei 2015/Diterima: 27 Januari 2016
ABSTRACT
Interest in the use of intelligent
packaging systems for food products has increased in recent years.
Intelligent packaging systems are those that monitor the condition
of packaged foods to give information regarding the quality of the
packaged food during transport and storage. The potential of HEC/PANI film as pH indicator
and pH sensor were evaluated. HEC/PANI film was prepared by
solution blending and casting method. Fourier transform infrared
(FTIR)
spectroscopy showed that there was no chemical interaction between
HEC
and PANI.
The film properties were retained chemically. The electrical conductivity
increment from 1.14×105 to 2.2 ×105 S/cm
was observed when PANI was incorporated into the HEC
film matrix. Field emission scanning electron microscopy
(FESEM)
showed that the electrical conductance network of PANI was
formed in HEC/PANI film. The electrical sensitivity of the film has
been studied with I-V characterization. The changes in color and
current of HEC/PANI
film on interaction to pH buffer 1-14 shows its suitability
as pH indicator and pH sensor for food.
Keywords: Intelligent packaging;
hydroxyethylcellulose; pH indicator; pH
sensor; polyaniline
ABSTRAK
Kepentingan dalam penggunaan
sistem pembungkusan
pintar bagi produk
makanan telah
meningkat sejak kebelakangan ini. Sistem pembungkusan pintar adalah pemantauan keadaan makanan yang dibungkus untuk memberikan maklumat mengenai kualiti makanan yang dibungkus semasa pengangkutan dan penyimpanan. Potensi HEC/PANI
filem sebagai
penunjuk pH dan
sensor pH dinilai. HEC/PANI filem disediakan oleh pengadunan larutan dan kaedah
tuangan. Transformasi Fourier inframerah (FTIR)
spektroskopi menunjukkan
bahawa tidak ada
interaksi kimia
antara HEC dan PANI.
Ciri-ciri
filem dikekalkan secara kimia. Peningkatan kekonduksian elektrik dari 1.14×105 kepada 2.2×105 S/cm diperhatikan
apabila PANI telah
dimasukkan ke
dalam filem matriks
HEC.
Pancaran medan
mikroskop elektron
imbasan (FESEM) menunjukkan
bahawa rangkaian
konduktans elektrik PANI
terbentuk dalam
filem HEC/PANI. Kepekaan filem
elektrik telah
dikaji dengan pencirian
I-V. Perubahan dalam warna dan filem semasa
HEC/PANI
pada interaksi
untuk penampan
pH 1-14 menunjukkan kesesuaiannya sebagai penunjuk pH dan sensor pH untuk makanan.
Kata kunci: Hidroksietilselulosa;
pembungkusan pintar;
pengesan pH; penunjuk pH; polianilina
RUJUKAN
Aday,
M.S. & Caner, C. 2010. Understanding the effects
of various edible coatings on the storability of fresh cherry.
Packaging Technology and Science 23: 441-456.
Cao,
X., Chang, P.R. & Huneault, M.A. 2007. Preparation and
properties of plasticized starch modified with poly (ε-caprolactone)
based waterborne polyurethane. Carbohydrate Polymers 71(1):
119-125.
Cao,
X., Chen, Y., Peter, R., Chang, P.R., Stumborg,
M., Michel, A. & Huneault, M.A. 2008. Green composites
reinforced with hemp nanocrystals in plasticized starch. Journal
of Applied Polymer Science 109(6): 3804-3810.
Demas,
J.N., DeGraff, B.A. & Coleman, P.B.
1999. Oxygen sensors
based on luminescence quenching. Analytical Chemistry 71:
793-800.
Elsayed, A.H., Elden,
M.S., Elsyed, A.M., Elazm,
A.H., Younes, E.M. & Motaweh,
H.A. 2011. Synthesis and properties of polyaniline
/ferrites nanocomposites. International Journal of Electrochemical
Science 6: 206-221.
Finkenstadt,
V.L. 2005.
Natural polysaccharides as electroactive polymers.
Applied Microbiol Biotechnology 67(6):
735-745.
Guan,
Y.L., Liu, X.F., Zhang, Y.P. & Yao, K.D. 1998. Study of phase behavior on chitosan/viscose rayon blend film.
Journal of Applied Polymer Science 67(12): 1965-1972.
Gunasakera,
T.S., Dorsch, M.R., Slade, M.B. &
Veal, D.A. 2003.
Specific detection of Pseudomonas spp. by fluorescence in
situ hybridization using ribosomal RNA directed probes. Journal
of Applied Microbiology 94: 936-945.
Huang,
J.C. 2002.
Carbon black filled conducting polymers and polymer blends. Advanced
Polymer Technology 21: 299-313.
Kress-Rogers,
E. 2001.
Instrumentation for food quality assurance.
In Instrumentation and Sensors for the Food Industry (2nd
ed.), edited by Kress-Rodgers, E. & Brimelow,
C.J.B. Cambridge, UK: Woodhead Publishing
Ltd. pp. 581- 669.
Kuswandi,
B., Jayus, Restyna,
A., Abdullah, A., Heng, L.Y. & Ahmad,
M. 2012. A novel colorimetric food package label for fish spoilage based on
polyaniline film. Food Control 25: 184-189.
Lethaby, H. 1862. On the production of a blue substance by the electrolysis of sulphate of aniline. Journal of the Chemical Society
15: 161-163.
Lindfors,
T. & Ivaska, A. 2002. pH sensitivity of
polyaniline and its substituted derivatives. Journal of Electroanalytical
Chemistry 531: 43-52.
Ma, X., Chang,
P.R., Yu, J. & Lu, P. 2008. Characterizations of glycerol plasticized
starch (GPS)/carbon black (CB) membranes prepared by melt extrusion
and microwave radiation. Carbohydrate Polymers 74(4): 895-900.
Mitchell,
R.L. & Murphy, C.F. 1972. Heat Sealable Hydroxyethyl Cellulose Film
and Process for Preparing same. US 3652316.
Osman,
Z., Ibrahim, Z.A. & Arof, A.K. 2001. Conductivity enhancement
due to ion dissociation in plasticized chitosan based polymer electrolytes.
Carbohydrate Polymers 44: 167-173.
Piletsky,
S.A., Higson, S.P.J. & Davis, F. 2006. Food Spoilage
Sensor. WIPO Patent Application WO/2006/024848.
Pringsheim,
E., Terpetschig, E. & Wolfbeis,
O.S. 1997.
Optical sensing of pH using thin films of substituted
polyanilines. Analytical Chemical Act 357: 247-252.
Ramsay, B.A., Langlade,
V., Carreau, P.J. & Ramsay, J.A. 1993.
Biodegradability and mechanical properties of poly- (ß-hydroxybutyrate-co-ß-hydroxyvalerate)/ starch blends. Applied and Environmental
Microbiology 59(4): 1242-1246.
Sunendar,
B., Wibowo, A., Nugraha,
Y. & Bundjal, B. 2008. An Electronic Structure Study of Polyaniline in Emeraldine salt and Emeraldine Base.
Institut Teknologi Bandung (ITB), Indonesia.
Thangarathinavelu,
M., Tripathi, A.K., Goel,
T.C. & Varma, I.K. 1994. Preparation and characterization
of polyaniline-pvc polymer composite film.
Journal of Applied Polymer Science 51: 1347-1349.
Wibowo,
T., Bunjali, B. & Sunandar,
B. 2008.
An electric structure study of poyniline
in emeraldine base form. The
2nd South East Asian Technical University Consortium (SEATUC).
26-27 February. Institut Teknologi Bandung (ITB). Indonesia.
Wouters,
J.T.M., Ayad, E.H.E., Hugenholtz,
J. & Smit, G. 2002. Microbes from raw milk for fermented
dairy products. International Dairy Journal 12: 91-109.
Yam, P. 1995. Plastics get wired.
Scientific American 273(1): 82-87.
Yin, Y.J., Yao, K.D.,
Cheng, G.X. & Ma, J.B. 1999. Properties
of polyelectrolyte complex films of the chitosan and gelatin.
Polymer International 48(6): 429-43.
Yoshida,
H., Takei, F. & Sawatari, N. 2002. High ionic conducting polymer with polysaccharide and its applications.
Fujitsu Science Technology Journal 38(1): 39-45.
Yu, J., Zhang,
L.Q., Rogunova, M., Summers,
J., Hiltner, A. & Baer, E. 2005. Conductivity
of polyolefins filled with high-structure carbon black. Journal
of Applied Polymer Science 98(4): 1799-1805.
*Pengarang untuk surat-menyurat; email: idayu@cheme.utm.my
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