Bioplastics from blends of cassava and rice flours: The effect of blend composition

Journal article

Authors/Editors

NARONGRIT SOMBATSOMPOP

Strategic Research Themes

No matching items found.

Publication Details

Author list: Lopattananon N., Thongpin C., Sombatsompop N.

Publisher: De Gruyter

Publication year: 2012

Journal: International Polymer Processing: The Journal of the Polymer Processing Society (0930-777X)

Volume number: 27

Issue number: 3

Start page: 334

End page: 340

Number of pages: 7

ISSN: 0930-777X

eISSN: 2195-8602

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863821083&doi=10.3139%2f217.2532&partnerID=40&md5=0fe914868bd7bd371e51e671cafdac98

Languages: English-Great Britain (EN-GB)

View in Web of Science | View on publisher site | View citing articles in Web of Science

Abstract

Bioplastics from melt-mixing of cassava flour, rice flour and their blends with compositions of between 0/100 and 100/0 %wt were successfully obtained using twin-screw extrusion and compression molding processes. The influence of blend composition on the bioplastic's properties was studied. It was found that the flour blends were uniformly mixed. The tensile properties and dynamic properties of the flour bioplastics were examined. The tensile strength and storage modulus of compression molded bioplastics based on rice flour was greater than those of the cassava flour, but their flexibility was lower. The tensile strength and storage modulus of the flour blend bioplastics increased with increasing rice flour content. The flour bioplastics showed two glass transitions, one corresponding to glycerol rich phase and the other corresponding to plasticized starch. For plasticized flour blends, the glass transitions were not affected by the blend composition. The improvement in the mechanical properties of the bioplastics produced from the cassava/ rice flour blend could be explained by an increase in the crystallinity level resulting from the higher concentration of rice flour. Using flour blends derived from cassava and rice flours, the bioplastics developed in this study offer a greater performance while maintaining environmental compatibility and sustainability, which allows for a substitution of tradition bioplastics from cassava starch. ฉ Carl Hanser Verlag, Munich Intern.

Keywords