Abstract: This research studied
the synthesis of
Polyurethane (PU) Membrane
from Carrageenan and
2,4 toylulene diisocyanante (TDI). The PU membrane made from the
Gracilaria sp of red seaweed has rendement of 60.5% from the total weight of
the dried sea grass. The produced Carrageenan has pure properties with
containing many OH groups which can be used to synthesize membrane. The dope
solution to produce good membrane was made at the temperature of 60 oC for the
reaction of 5 minutes
by varying concentration
of carrageenan 5-35
% (b/v). PU
membrane was constructed using petri
dish with the thickness
of about 0.1 mm. To
control the thickness
of the membrane, the volume of
dope solution was used about 12 mL, and the membrane was produced with 10
cm in diameter.
The membrane had
been synthesized at the temperature
of 60 oC
with varied concentration of Carrageenan 15% (b/v) to the toylulene
diisocyanate (TDI). The produced membrane
has the optimal
properties with the
tensile strength of 340 kgf/mm2,
the elongation percentage of 9%,
the glass temperature transition of 243.6 oC and the melting point of 423.02oC.
The optimum PU
membrane obtained was
good in mechanical
and physical properties,
strong, elastic and transparent.
Keywords: carrageenan, flux, membrane, polyurethane, rejection factor, TDI
Penulis: Marlina
Kode Jurnal: jpkimiadd100024
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