Development and characterization of thermoplastic films from sorghum distillers dried grains grafted with various methacrylates

Narendra Reddy, Zhen Shi, Lisa Temme, Helan Xu, Lan Xu, Xiuliang Hou, Yiqi Yang

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Distillers Dried Grains (DDG) obtained during production of ethanol from grain sorghum were grafted with methacrylates and compression molded into films with good dry and wet tensile properties. Since sorghum DDG contains up to 45% proteins that are indigestible by animals, it is necessary to find alternative applications to make sorghum ethanol economically competitive. In this research, sorghum DDG was grafted with methyl, ethyl, and butyl methacrylates, the grafted DDG was compression molded into films, and the properties of the grafted DDG and films were studied. At a grafting ratio of 40%, butyl methacrylate (BMA) grafted films had a strength of 4.8 MPa and elongation of 1.8% when dry and 3.1 MPa and 8.1% when wet, indicating that the films had good strength and wet stability. Films developed from grafted DDG show the potential to overcome the brittleness and poor water stability of biopolymer-based films and be useful for various applications.

Original languageEnglish (US)
Pages (from-to)2406-2411
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Volume62
Issue number11
DOIs
StatePublished - Mar 19 2014

Keywords

  • distillers grains
  • sorghum
  • thermoplastics

ASJC Scopus subject areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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