Frontiers of Engineering Reports on Leading-Edge Engineering from the 2007 Symposium (2008) / Chapter Skim
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Corn-Based Materials--Sanjay V. Malhotra, Vineet Kumar, Anthony East, and Michael Jaffe
Corn-Based Materials--Sanjay V. Malhotra, Vineet Kumar, Anthony East, and Michael Jaffe
Pages 53-64
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From page 53... ...
The development of biodegradable polymers is a high priority from the standpoint of environmental preservation; biodegradable polymers from corn chemistry have a number of advantages over other synthetic materials. Polymers derived from starch (a component of corn)
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From page 54... ...
content of more than 70 percent, are combined with specific plasticizing solvents, they produce thermoplastic materials with good performance properties and inherent biodegradability. The hydrophilic nature of high-starch content plastics, which readily disintegrate on contact with water, can be overcome by blending and chemically modifying the material by acetylation, esterification, or etherification.
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From page 55... ...
Starch and PBS or PBSA blends produce biodegradable plastic sheeting that can be thermo-formed into biscuit trays and other film products. The tensile strength of these blends is somewhat lower than that of polyester alone, but there is little significant further decrease in strength as the starch content increases, at least to a point.
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From page 56... ...
is a biodegradable polymer based on renewable resources with a range of applications similar to polyethylene terephthalate (PET)
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From page 57... ...
, which yields a low-molecular weight PLA prepolymer, which is then thermally depolymerised to yield a distillable cyclic dimer (dilactide, or simply lactide)
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From page 58... ...
Dianhydrohexitols are well documented by-products of the starch industry obtained by dehydration of D-hexitols, which are made by a simple reduction of hexose sugars (Stross and Hemmer, 1991)
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From page 59... ...
, is already being investigated. A few of the potential applications of dianhydrohexitol-based polymeric products are listed below: • Isosorbide diglycidyl ether resins could replace bisphenol-A epoxies, which are used to line food and beverage cans.
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From page 60... ...
And, most important, it does not promote penetration of the ingredients into the bloodstream. Materials made with DMI require a lower concentration of aggressive active agents, such as salicylic acid, vitamin C, lactic acid, hydrocortisone, and hyaluronic acid, thus reducing the formulation cost of finished products.
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From page 61... ...
GD R is the single letter code for arginine-glycine-aspartate motif, which can be found in proteins of the extracellular matrix. ntegrins link the intracellular cytoskeleton of cells with the extracellular matrix by recognizing I the RGD motif.
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From page 62... ...
s from silylated aliphatic diols including chiral monomers. Journal of Polymer Science Part A: Polymer Chemistry 33(15)
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From page 63... ...
May 9, 1972. Water Absorbing Alkali Metal Carboxylate Salts of Starch-Polyacrylonitrile Graft Copolymers.
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