Pengaruh Waktu Perlakuan Kalium Permanganate (KMnO4) Terhadap Sifat Mekanik Komposit Serat Purun Tikus (Eleocharis Dulcis)
Abstract: The combination
between treatment time of the addition and directon fiber orientation was used to
get maximum mechanical
properties of Purun Tikus fiber
composites. The purpose
of this study was to construct composite of polyester matrix and Purun
tikus natural fiber by mixing 2 % KMnO4 with 1 liter aquades for 15 minutes and
30 minutes. It is applied to determine tensile strength and
flexural strength. The
variation of volume
fiber fraction are
20%, 30%, and
40%. The directon of Purun Tikus fiber are 0 and 90%, and the polyester
matrix type 157 BTQN with 1%
concentration of MEXPO
hardener. The dimension of
tensile specimen refered
to standart ASTM D638-03. The
flexural strength was
obtained trough bending
test based on
ASTM 790-03. The
combination of these
2 variables can
improve interfacial adhesion
between fiber and matrix. The highest tensile strength was
2% KMNO4 for 15 minutes of natural fiber composites Purun Tikus with volume 40@
about 55.54 N/mm2. The variation of 2% KMnO4 for 30 minutes the volume
fraction of 40%
was 41.07 N/mm2. The obtained
of variation without KMnO4 treatment and
fraction volume 40% about 40.03 N/mm2 The highest flexural
strength of the composite
fiber Purun tikus in
the variation treatment 2%
KMnO4 for 15
minutes with the volume
fraction 40% was 119.70
N/mm2,for 30 minutes
the fraction volume
40% was 80.88 N/mm2, and the fraction volume 40% without treatment was 62.66 N/mm2.
Penulis: Kosjoko, Achmad As’ad
Sonief, Djoko Sutikno
Kode Jurnal: jptmesindd110276
