Abstrak: Polyurethane (PU)
membranes was prepared
by reacting the
free fatty acids
and fatty acids that have been oxidazed from castor oil
with a 2,4-toluen di-isocyanate (TDI). He effect of of monomer composition,
temperature, and polymerization time
was studied on the
performances of flat
sheet membrane. Experimental
results showed that
the optimum conditions of
the membrane synthesis
from free fatty
acid by oxidation-methylation was obtained at ratio of 1.2: 0.56 (mol /
mol), temperature of 100°C and polymerization time of 5 minutes. The
resulting membranes are
transparent, elastic, homogeneous,
robust and has a glass transition point
of 127.4°C and
had stensile strength
about 41.7 MPa.
Infrared spectrum (IR) observation
showed that the
persistence of the
peak –CO from
-NCO at wavenumber 2272.9
cm-1, whereas the
-OH group was
disaapear at wave
numbers 3100-3300 cm-1.
This indicated that
the polymerization reaction
of PU membrane
synthesis from free fatty acids
was done successfully.
Keyword: Castor oil, free
fatty acids, inframerah (IR), 2,4-tolulen di-isocyianat (TDI)
Penulis: Marlina
Kode Jurnal: jpkimiadd120036
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