Authors:
Marpongahtun
1
;
Cut Fatimah Zuhra
2
;
Sovia Lenny
2
;
Darwin Yunus Nasution
2
;
Aulya M.
3
;
Mahmud
4
;
Suci A. Amaturrahim
3
;
Irmayani
2
and
Fitria Puspa Dewi
2
Affiliations:
1
1Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, Indonesia
;
2
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jl. Bioteknologi No. 1 Kampus USU Padang Bulan, Medan 20155, Indonesia
;
3
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jl. Bioteknologi No. 1 Kampus USU Padang Bulan, Medan 20155, Indonesia, Indonesia
;
4
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Sumatera Utara, Indonesia
Keyword(s):
Biocomposite, Breadfruit Strach Modified, polycaprolactone, Mechanical Properties
Abstract:
The determination of the mechanical properties and morphology of polycaprolactone (PCL) / breadfruit polytocyte biocomposites tied up with trisodium trimetaposphate was performed. The breadfruit starch is tied with trisodium trimetaposphate to produce pospat starch. The highest degree of substitution was obtained in variation of trisodium weight of trimetafosfat 3%, that is 0,0633. PCL / Starch Biocomposite was prepared by mixing method between PCL in chloroform solvent with modified 3% sodium starch then printed at 75˚C since 10 minutes. Mechanical properties, functional group, and morphological of PCL/Modified breadfruit starch biocomposite was analyzed. The result of evaluation showed an optimal tensile test value of 90% : 10% with tensile strenght of 7,4287 MPa and Modulus Young’s of 27,852 MPa. The functional group analysis of phosphate starch showed asymmetric P-O-C group at wave number 1018,41 cm-1. Analysis with FT-IR from PCL/Modified Breadfruit Starch Biocomposite showed of
physical interaction occurred between PCL and modified breadfruit starch. Morphological analysis using SEM showed smooth and homogeneous surface of biocomposite.
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