Biodegradable packaging foams of starch acetate blended with corn stalk fibers

G. M. Ganjyal, N. Reddy, Yiqi Yang, M. A. Hanna

Research output: Contribution to journalArticle

61 Citations (Scopus)

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

Fingerprint

Starch
Foams
Packaging
Fibers
Physical properties
Talc
Sodium Hydroxide
Lignin
Extruders
starch acetate
Cellulose
Shear strength
Thermoplastics
Extrusion
Ethanol
Sodium
Scanning
Mechanical properties
Electrons

Keywords

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

ASJC Scopus subject areas

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

Cite this

Biodegradable packaging foams of starch acetate blended with corn stalk fibers. / Ganjyal, G. M.; Reddy, N.; Yang, Yiqi; Hanna, M. A.

In: Journal of Applied Polymer Science, Vol. 93, No. 6, 15.09.2004, p. 2627-2633.

Research output: Contribution to journalArticle

Ganjyal, G. M. ; Reddy, N. ; Yang, Yiqi ; Hanna, M. A. / Biodegradable packaging foams of starch acetate blended with corn stalk fibers. In: Journal of Applied Polymer Science. 2004 ; Vol. 93, No. 6. pp. 2627-2633.
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