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Botanical origin as a determinant for the mechanical properties of starch films with nanoparticle reinforcements
Author(s) -
Martinez Sergio,
Rivon Clarisse,
Troncoso Omar P.,
Torres Fernando G.
Publication year - 2016
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201600143
Subject(s) - starch , nanocomposite , solanum tuberosum , reinforcement , nanoparticle , materials science , ultimate tensile strength , solanum , composite material , horticulture , botany , food science , biology , nanotechnology
Starches were extracted from three varieties of native Andean potatoes ( Solanum tuberosum var amarilla , Solanum tuberosum sbsp. Andigena var huamantanga , and Solanum tuberosum sbsp. Andigena var tomasa ). Starch‐based nanocomposite films were prepared using starch as the matrix and starch nanoparticles as the reinforcement at 3, 5, and 7 wt%. The mechanical properties of the prepared nanocomposites were assessed by tensile tests. The results show that the mechanical properties of the nanocomposite films vary depending on both the amount of reinforcement present, and the botanical origin of the starch. In addition, the highest increases of elastic moduli (up to 1.5–3 times) are found when a film's matrix and reinforcement nanoparticles are prepared from a single botanical source.