Azwar, Edwin (2013) CAMPATIBILITY OF TAPIOCA STARCH FILM WITH BIOPLASTICIZERS. In: PROSIDING SEMINAR NASIONAL SAINS & TEKNOLOGI V SATEK & INDONESIA HIJAU, 19-20 November 2013, Bandar Lampung.

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Abstract

Starch certainly attracted more attention than other natural biopolymers. Starch granules showed unique behavior. Gelatinization of starch, wollen granules broke up to release the amylose and amylopectin. There were no molecular weight changes during the gelatinization process but, loss of crystallinity and irreversible granule swellin, disruption of molecular order within granul) that produces a viscous mass consisting of a continuous phase of solubilized amylose and amylopectin. It is also an uptake of heat as the conformation of the starch alters, the starch hydrates, and there is a lost of integrity of the starch granule. By adding plasticizer low molecular weight plasticizers such as water, glycerol, sorbitol or citric acid then the starch granule become plasticized. The starch films were prepared by glatinization and casting methode, and characterized by scanning electron microscopy (SEM) and mechanical properties to see analyze campatibility between tapioca starch and its plasticizers. The dispersion or homogeneity of plasticizer in the tapioca starch matrix lead to good strength. Matrix interactions lead to the development of an interphase. Good dispersion of plasiticizer show tendency little to agglomerate, promoting improvements in strength of composite.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	T Technology > TP Chemical technology
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Kimia
Depositing User:	PhD Edwin Azwar
Date Deposited:	25 Sep 2017 04:42
Last Modified:	25 Sep 2017 04:42
URI:	http://repository.lppm.unila.ac.id/id/eprint/3935

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