temperature of 20°C - 600°C. MCC used in this test
is 30 gram with DTA range ± 250 µv, heating speed
10°C mm / minute and chard speed 2.5 mm / minute.
The following is a picture of the DTA test
equipment used.
Figure 3: DTA Test.
From thermocouple DTA, α-cellulose from
sugarcane bagasse Bz 132 (Saccharum officinarum)
shows a peak at 60°C, a peak formed on the right
area which shows a decrease in temperature
(endotherm) and a peak on the left at 320°C
indicating there is an increase in temperature
(exotherm). At 60°C α-cellulose from bagasse Bz
132 (Saccharum officinarum) evaporates which is
likely to be the water that is still stored α-cellulose
from bagasse Bz 132 (Saccharum officinarum), and
at 320°C α-cellulose from pulp sugar cane Bz 132
(Saccharum officinarum) burns by showing its
optimum peak.
4 CONCLUSIONS
Separation of α-cellulose from bagasse is done by
the Okhamafe method by extraction which is done
by immersion in 3.5% of HNO
3
acid, bleaching with
Sodium Hipochlorite 1.75% and purification with
NaOH 17.5%. Analysis of the characteristics of the
resulting α-cellulose was obtained from the results
of α-cellulose SEM photos of the surface with a
magnification of 1000 times. Visible spherical-
shaped surfaces with almost the same size (uniform).
This can indicate that the resulting α-cellulose has a
homogeneous size (equal in size). From the
functional group analysis, we can see the free O-H
group with wave number 4001.50 cm
-1
which shows
the CH2OH chain that is typical for cellulose and O-
H hydrogen bonds with wave numbers 3437.30 cm
-1
as supporting data. From the thermal test, the DTA
test obtained the melting point at a temperature of
60
0
C and a decomposition point of 320
0
C according
to the reference cellulose in general.
ACKNOWLEDGEMENTS
This research was carried out funded by Politeknik
Teknologi Kimia Industri Medan.
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