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Includes the Jominy test and a method based on work by M. Standard Test Method for Evaluating Bond Strength for 0. B900-04 Standard Practice for Packaging of Copper and Copper Alloy Mill Products for U. This article is about plastics made from renewable biomass. For the information on plastics that are biodegradable, see biodegradable plastic. Bioplastics are plastics derived from renewable biomass sources, such as vegetable fats and oils, corn starch, or microbiota.
Note 3: The use of the term “bioplastic” is discouraged. Bioplastics are used for disposable items, such as packaging, crockery, cutlery, pots, bowls, and straws. Few commercial applications exist for bioplastics. In principle they could replace many applications for petroleum-derived plastics, however cost and performance remain problematic. Biopolymers are available as coatings for paper rather than the more common petrochemical coatings. Thermoplastic starch currently represents the most widely used bioplastic, constituting about 50 percent of the bioplastics market.
Simple starch bioplastic can be made at home. Bioplastics can be made from proteins from different sources. For example, wheat gluten and casein show promising properties as a raw material for different biodegradable polymers. Polyhydroxyalkanoates are linear polyesters produced in nature by bacterial fermentation of sugar or lipids. PA 11 is a biopolymer derived from natural oil. It is also known under the tradename Rilsan B, commercialized by Arkema. PA 11 belongs to the technical polymers family and is not biodegradable.
Ethylene is chemically similar to, and can be derived from ethanol, which can be produced by fermentation of agricultural feedstocks such as sugar cane or corn. GM crops, although GM corn is the standard feedstock. Looking further ahead, some of the second generation bioplastics manufacturing technologies under development employ the “plant factory” model, using genetically modified crops or genetically modified bacteria to optimise efficiency. Recently, there have been a large emphasis on producing biobased and isocyanate-free polyurethanes. One such example utilizes a spontaneous reaction between polyamines and cyclic carbonates to produce polyhydroxurethanes. A number bioplastic classes have been synthesized from plant and animal derived fats and oils. Petroleum is often still used as a source of materials and energy in the production of bioplastic.
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