Biodegradable packaging foams of starch acetate blended with corn stalk fibers

G. M. Ganjyal, N. Reddy, Y. Q. Yang, M. A. Hanna

Research output: Contribution to journalArticle

68 Scopus citations

Abstract

Starch acetate-corn fiber foams were prepared by extrusion. Corn starch was acetylated (DS 2) to introduce thermoplastic properties. Corn stalks were treated with sodium hydroxide to remove the lignin and to obtain purified cellulose fibers. Starch acetate was blended with treated fiber at concentrations of 0, 2, 6, 10, and 14% (w/w) and extruded in a corotating twin-screw extruder with 12 to 18% w/w ethanol content and 5% talc as a nucleating agent. The samples were extruded at 150°C and selected physical and mechanical properties were evaluated. Micrographic properties were analyzed using scanning electron micros copy to observe the interaction of fiber and starch. Fiber incorporation at the lower concentrations enhanced the physical properties of the foams. Fiber contents greater than 10% decreased expansion and increased density and shear strength. Good compatibility between starch and corn fiber was observed.

Original languageEnglish (US)
Pages (from-to)2627-2633
Number of pages7
JournalJournal of Applied Polymer Science
Volume93
Issue number6
DOIs
StatePublished - Sep 15 2004

Keywords

  • Cellulose
  • Extrusion
  • Fiber
  • Foams
  • Starch
  • Starch acetate

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Biodegradable packaging foams of starch acetate blended with corn stalk fibers'. Together they form a unique fingerprint.

  • Cite this