CD Tesis
Optimasi Pembuatan Film Biodegradabel Dari Komposit Pati Sagu – Mcc Yang Dimodifikasi Dengan Asam Sitrat
Conventional plastics produce waste that was difficult to decompose and
needed to substitute with starch-based bioplastics. Sago consist of 27-35%
amylose and 50-73% amylopectin, which have the potential to be used as a
material for starch-based bioplastics. This study aims to determine the optimal
value of Microcrystalline Cellulose (MCC), citric acid and sorbitol for the
characteristics of sago starch-based bioplastics. The research was carried out in
three stages. The first stage is literature study and collection data from secondary
data. The second stage is made model of each response and did the statistical
model testing. The third step is optimization of the response. Optimization was
done by using model approach using statistical methods, the Response Surface
Methodology (RSM) method with the Central Composite Design (CCD)
experimental design. The software used was Design Expert 10.01 to process
response and optimization data. The method used for optimization is the
desirability function
The optimum process conditions obtained were the MCC filler variation of
18% w/w starch, 3% w/w citric acid, and 33% w/w sorbitol with the optimum
response value predicted for tensile strength (Y1) = 11.38 MPa. ; Elongation (Y2)
= 13.54%; Young's modulus (Y3) = 118.05 MPa; Biodegradability (Y4) =
46.89%, and Water Uptake (Y5) = 52.13%. The combined desirability value was
0.551.
Key words : Central Composite Design (CCD), Optimization, Response Surface
Methodology (RSM), Sago
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