| dc.description.abstract | Bioplastic or organic plastic are polymers derived from renewable biomass sources
such as vegetable oils, starch, cellulose and others. This study examines the
characteristics of bioplastic produced from waste durian seeds. The objective of this
research was to investigate the characteristics of durian seed starch and investigate
the effect of adding chitosan and hydrochloric acid (HCl) as solvent of chitosan on
density, water absorbtion, tensile strength, elongation at break, fungtional group,
gelatinization profile and morphology of bioplastic from durian seed starch.
Manufacture of bioplastic used casting method with starch solution 20 w/v. The
variation added mass of chitosan are 3,0 w/v ; 3,5 w/v ; 4,0 w/v ; 4,5 w/v and 5,0
w/v, and variation of hydrochloric acid (HCl) concentration are 0,9%v ; 1,0%v ; 1,
1%v ; 1,2%v dan 1,3%v. The results of experiments show that durian seed have
starch content 86,82%, amylose content 36,32%, amylopectin content 50,50%.
Analysis of gelatinization profile which is measured by Rapid Visco Analyzer (RVA)
method, showed that durian seed starch has gelatinization temperature 69,65o
C with
high peak viscosity 5783 cP and bioplastic from durian seed starch has
gelatinization temperature 69,65o
C with peak viscosity 5843 cP. From analyzing
FTIR of bioplastic with addition of chitosan showed no change in the fungtional
groups, but the addition of fungtional groups O–H at wave number 3603,03 cm-1 and
3649,32 cm-1 and N–H groups apppears at wave number 1546,91 cm-1. The Best of
bioplastic in this reseach is at adding of 5,0% w chitosan and 0,9%v HCl which
produces density 1,747 gram/cm3
, water absorption 7,69%, tensile strength 6,396
Mpa and elongation at break 10,715%. | en_US |
