Fiber-reinforced starch-based compositions and methods of manufacture and use
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United States of America Patent
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Aug 2, 2011
Grant Date -
Jan 25, 2007
app pub date -
Jul 19, 2005
filing date -
Jul 19, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fiber-reinforced and starch-based composition can be prepared by combining two fractions. The first fraction can include a gelatinized starch, water, and fibers, wherein the fibers are substantially homogenously mixed with the starch in an amount sufficient to structurally reinforce the mechanical characteristics of the starch-based composition. The second fraction is then combined with the first fraction, wherein the second fraction can include non-gelatinized starch, non-volatile plasticizer, and a water-resistant polymer. The composition is mixed so as to form a thermoplastic composition being capable of expanding when rapidly heated to above the boiling point of water and the softening point of the plasticized starch. Additionally, fiber-reinforced articles can be prepared from a method of processing the starch-based compositions. Such a method includes introducing the fiber-reinforced starch-based composition into a mold, and molding the composition into a fiber-reinforced article.
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