Darni, Yuli and Lismeri, Lia and Utami, Herti and Hanif, Muhammad (2019) Microfibril Cellulose Filler Contributes to Thermal Stability and Morphology of Bioplastics Characteristics of Sorghum- Based. In: ICSB Unila, 15-17 oktober 2019, bandar lampung. (Unpublished)

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Abstract

This research aimed to examine the effect of cellulose microfibrils filler to thermal characteristic and morphology of bioplastic. Sorghum starch and chitosan, of which 63 micron particle size, were varied by starch to chitosan ratio (g/g) of 10:0; 9.5:0.5; 8.5:1.5; 7.5:2.5; 6,5:3.5; and 5.5:4.5 respectively. The cellulose microfibrils as a filler were added, and its concentration varied of 0;1; 2; and 3% based on the total dry weight of the combined biomaterials. Glycerol as a plasticizer was also appended to about 10% based on the total dry weight of the combined biomaterials. The combination of 8.5 g sorghum starch and 1.5 g chitosan gave the best results and revealed the enhance of the thermal characteristic of bioplastic due to the increase of the filler. This phenomenon was expressed in glass transition temperature and melting temperature of bioplastic. The SEM analysis on the morphology structure of bioplastic surface showed that the increase of the filler contributes to dense of bioplastic structure. Keywords:Bioplastics, cellulose microfibrils, thermal stability. 1. Introduction Synthetic plastics made from petroleum is one of the materials used to facilitate

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TP Chemical technology
Divisions: Fakultas Teknik (FT) > Prodi Teknik Kimia
Depositing User: LIA LISMER
Date Deposited: 18 Nov 2019 07:20
Last Modified: 18 Nov 2019 07:20
URI: http://repository.lppm.unila.ac.id/id/eprint/16594

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