95 / 186
Universiti pertahanan nasional malaysia
4
laporan tahunan 2014
4
94
P e n y e l i d i k a n
d a n I n o v a s i
7
Bil
Penyelidik
Anugerah
Tajuk Penyelidikan/ Projek
Ringkasan Produk
10
11
OPTIMIZATION PREPARATION
CONDITIONS OF CELLULOSE
MICROFIBRIL NANOFIBRIL
(CMNF) BASED BANANA (MUSA
ACUMINATA) STEM WASTE BY
ALKALINE TREATMENT AND
BLEACHING METHOD
GREEN COMPOSITE CELLULOSE
ACETATE POLYMER ELECTROLYTES
(G-CAPE) FOR LITHIUM BATTERIES
After bunches of banana were harvested from the
trees, large amount of pseudo-stem residue are
left over. These bare pseudo-stems are usually
abandoned in the soil plantation to become
organic waste and cause environmental pollution
in the sight of visual look. Extraction of fibers from
these pseudo-stem will aid natural degradation,
hence results in ecological balances. Therefore,
exploitation of the banana pseudo-stem, which
was previously considered as waste, will be
significantly beneficial to the environment and bring
additional profits. The re-use of by-product and
low environmental impact procedures represent a
sustainable alternatives for new material.
Alkali treatment and bleaching have been applied
on banana fibers obtained from harvested
pseudo-stem of the banana plant Musa acuminata
collected in Banting, Selangor, Malaysia. The
structure and morphology of the fibers have
been found to be affected by the used of alkaline
treatment and bleaching. The crystallite size and
percentage crystallinity of the untreated (raw
banana fibers) and treated (microfibrils cellulose)
fibers were investigated using X-Ray Diffraction
(XRD). XRD studies shows that the treated
cellulose prepared by such chemical treatment
(alkali and bleaching treatment) were more
crystalline than the untreated banana fibers.
This innovation focuses on the preparation and
characterization of salted cellulose acetate (CA
complexes, plasticized salted CA, and composited
CA polymer electrolytes. CA–salt complexes were
first prepared by dissolving cellulose acetate (CA)
in an appropriate solvent using various weight
percentages of ammonium and lithium salt. Different
concentrations of plasticizer were then added to the
solution with the highest conductivity. All samples
were prepared using solution cast technique. The
plasticized CA–salt had the highest conductivities
at 10-3 – 10-2 S cm-1. Different types of filler were
dispersed to form a composite CAPE with prominent
enhancement of its physical and electrical properties
for use in electrochemical devices such as dye-
sensitized solar cell (DSSC) and lithium-air batteries.
The performance results of the electrochemical
devices showed that these green composite cellulose
acetate polymer electrolytes (CAPE) had a huge
potential to be commercialized.
Prof. Dr. Fauziah Binti
Haji Abdul Aziz
Prof. Dr. Muhd
Zuazhan Bin Yahya
SILVER
(Sambungan) Jadual 41: Anugerah dan Pencapaian Penyelidik Pada ITEX 2014