Burying everyday items such as plastic drinks bottles, carrier bags and other overwrapped goodies in the ground may seem innocent enough, but each plastic bottle will take 450 years to biodegrade. The Brits currently landfill 28 million tons of waste every year and this amount is destined to double over the next twenty years if we don’t change our ways. In fact the amount of CO2 gases emitted during the manufacture of packaging waste in 2006 was estimated to be about the same as the amount produced by seven million petrol cars.
In an effort to reduce this environmental burden, materials experts at Sheffield Hallam University are working alongside 35 other research institutes, universities and partners, from thirteen European countries, in a potentially world changing packaging project, Sustainpack.
SustainPack is a four year European research programme determined to encourage the wide use of traditional natural based packaging products by producing easily degradable, renewable and recyclable packaging based on biopolymers, paper and board. Increasing the usage of natural materials to produce water resistant packaging will cause a major reduction in the amount of energy required to produce packages, by decreasing the number of packages based on petroleum products. SustainPack is striving to make these renewable materials an industry standard by 2015.
Professor Chris Breen from the university’s Materials and Engineering Research Institute is providing SustainPack partners with bespoke nanoadditives which are complex material structures engineered at a billionth of a millimetre. Chris said: “The typical consumer in Europe uses ten to twenty pieces of packaging everyday, so where the waste packaging ends up should be at the forefront of our minds. It is expected that Britain will run out of approved space for landfill sites in five to ten years time and as the Government struggles to reduce CO2 emissions, renewable packaging stands out as an attractive proposition.
“Developing sustainable packaging that can compete effectively with packaging derived from petrochemical-based polymers is extremely challenging. Sustainpack is addressing this challenge by creating a European research community focused on sustainable packaging which will pressure retailers to accept natural packaging as the way forward.
“Sheffield Hallam’s expertise is being used to develop nanoclay particles which will significantly improve the barrier properties and mechanical strength of the new biopolymer films and coatings. One of the more unusual modifiers that we are using to make the nanoclays more compatible with, and disperse throughout the biopolymer films, to effectively repel water molecules is a molecule called chitosan which is derived from the shells of crustaceans, such as crabs and lobsters."
Companies such as Sainsbury's and Smurfit-Kappa, one of Europe's largest manufacturers of packaging products, are already actively participating in the project. Sheffield Hallam is now collaborating with SustainPack's partners to develop sample packages which can be used to demonstrate the capabilities of the new materials.
SustainPack has E36million to research six areas covering market needs and sustainability; materials and degradable coatings research to enhance product uses; 3D and communicative packaging needs.
Donna Goodwin | alfa
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