Effect of starch granule size on physical properties of starch-filled polyethylene film

Journal Article · · Biotechnology Progress; (United States)

DOI:https://doi.org/10.1021/bp00013a008· OSTI ID:7206336

Lim, Seungtaik; Jane, Jaylin ^[1]; Rajagopalan, S; Seib, P A ^[2]

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1. Iowa State Univ., Ames (United States)
2. Kansas State Univ., Manhattan (United States)

Physical properties of blown films from compounded mixtures of linear low-density polyethylene (LLDPE) and starch were investigated. As starch content increased, tensile strength, percent elongation, and light transmittance decreased and film thickness increased. Among the tested films, small-particle corn starch film had the highest elongation rate and tensile and yield strength. Potato starch film had the lowest values. Potato-starch LLDPE film had the highest light transmittance and film thickness; small-particle corn starch had the lowest. Tensile and yield strength of the films had strong negative correlations with average starch granule diameter. Film thickness and light transmittance were linearly correlated with starch granule size. Using small-particle corn starch substantially increased incorporated starch level in the film while maintaining the film quality.

• OSTI ID: 7206336
• Journal Information: Biotechnology Progress; (United States), Journal Name: Biotechnology Progress; (United States) Vol. 8:1; ISSN 8756-7938; ISSN BIPRE
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIODEGRADATION
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLE SIZE
PHYSICAL PROPERTIES
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYSACCHARIDES
REAGENTS
SACCHARIDES
SIZE
STARCH