sábado, 18 de septiembre de 2010

Corn-based plastic that can tolerate heat

http://thechemistrysideoftheforce.blogspot.com/
The current corn-based bioplastics are a good alternative to petroleum-based plastics, but have the disadvantage that can not tolerate the heat, so it can not be used in the food industry as packaging which is filled with the product a hot. However, scientists from the U.S. Agricultural Research (ARS) have reached a corn-based bioplastic that tolerate more heat.

The corn-based plastics are produced by fermenting corn sugar to produce lactic acid. Lactic acid is used to form polylactic acid, or PLA, which is a bioplastic. Researchers are developing a product called modifier deflection temperature heat can be mixed with the PLA to enhance its heat tolerance.

The switch is more than 90% from corn and is completely biodegradable. There are currently no switches of this type are commercially available for mixing with the PLA, so researchers are seeking a patent on the invention.

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