Pengaruh Alkalisasi Komposit Serat Kelapa-Poliester Terhadap Kekuatan Tarik
Abstract: The purpose of this
research is to analyze the effect of alkalization on the tensile strength and strain of coconut fiber composites with
polyester matrix by
varying the concentration
of NaOH as follow 0%, 2%,
5% and 8%. Alkalization is
one of modifications
natural fibers to improve fiber-matrix compatibility.The
method of this research used a hands lay-up method. As follow the 1 st coconut
fiber treated without alkalization or 0% alkalization and the 2nd coconut
fiber immersed in alkaline solution (2%, 5% and 8% NaOH) for 1 hour. Then, each
treatment specimen molded to composite according to standard tensile test ASTM
D638 –I. Coconut fiber volume fraction 30% and 70% polyester, and arranged
coconut fiber straightly. And used the matrix
polyester resin type 157 BTQN with hardener MEKPO 1%.The results of this
research showed that coconut fiber reinforced composites with NaOH
concentrations of 0%, 2%, 5% and 8% respectively has a tensile strength that is
90,144 MPa, 93.75 MPa, 97,356 MPa and 94,151 MPa. The optimum concentration
limit of 5%
NaOH produced the
highest tensile strength 97,356 MPa,
while the composite
of coconut fiber
without alkalization has
the lowest tensile strength 90,144 MPa.
Penulis: Budha Maryanti, A.
As’ad Sonief, Slamet Wahyudi
Kode Jurnal: jptmesindd110183
