What it is possible to do bioplastic of?Plastic garbage pollute and will pollute environment throughout centuries as does not decay naturally. Green alternative to oil plastic - bioplastic from natural raw materials. Researchers developed the production technology of bioplastic from chitinous covers of shrimps. New material shrilk is cheap in production and does not pollute the nature.
Annually in the world more than 300 million tons of plastic are made, but only about 3% of plastic waste manage to be overworked. The plastic garbage, packing and bottles just are thrown out and for centuries will pollute environment. In only one northern part of the Pacific Ocean of fish absorb every year 24 000 tons of plastic.
Bioplastic - the green alternative to oil plastic - comprises some form of materials on a vegetable basis, but even green plastic often not completely decays on landfills. Researchers from Harvard Institute of Viss (Wyss Institute for Biologically Inspired Engineering), perhaps, solved this problem, having offered new manufacturing techniques of bioplastic from covers of the shrimps who are completely decomposed in the nature.
Hitozan - a chitin form - the main component of covers of Crustacea, insects, wings of butterflies and one of the most widespread organic materials on our planet. The majority of the available chitin in the world contains in shrimp covers which are sometimes used in fertilizers, cosmetics or food additives.
“One veslonogy (small Crustacea in zooplankton) make one billion tons of chitin a year, - the researcher Javier Fernandez (Javier Fernandez) writes. - In other words, within the last 12 months they made the same amount of chitin as we let out plasticity since 2009 - go years“.
The researchers headed by Fernandez and the founder and the director Viss doctor Don Ingberg (Don Ingber) developed a way of processing of material and production of big three-dimensional objects which quickly and without trace decay in the nature, especially in the damp soil and in the presence of the necessary microorganisms. Scientists consider that over time their invention will be worked for production of plastic packages, packing and even biodegradable diapers.
In comparison with oil plastic, material on the basis of a hitozan does not possess natural water tightness and demands a wax covering for creation of a barrier to water.
The material created for the first time three years ago under the name “shrilk“ (shrilk) experiences a rebirth today. If originally for its production it was used, except chitin from shrimp covers, squirrels from silk, then now scientists found a way to get rid of it that makes production of new bioplastic considerably easier cheaper.
Fibroin - a protein form from silk which was used in production a shrilka until recently - not only material, expensive, but also difficult for extraction. Now, according to Fernandez, for receiving hitozanovy plastic he is not necessary, in addition to the main raw materials only water and weak, less than 1%, solution of acetic acid is required.
Hitozan is available and is not dear, consumer qualities allow to use widely hitozanovy bioplastic instead of plastic from fossil raw materials. By production of products from new material the existing technologies of pouring and molding under pressure can be used. But the most important - shrilk easily decays and does not pollute environment.