Objective
Chemical markers will be identified which are suitable for adding to plastics used for packaging applications, and which can be readily identified and discriminated by a spectroscopic or other technique (preferably noncontacting). The compatibility of the chemical markers with commonly used plastics will be evaluated. Finally, it will be shown that the markers can be added to the plastics materials (a different marker for each polymer) by a blending/compounding or coating method.
An investigation was made of the use of chemical markers to enable identification and separation of different plastics from mixed wastes. Good progress has been made in developing the specifications for such a system, identifying and testing a range of marker compounds, proving compatibility with real packaging products and demonstrating a range of techniques considered suitable for identification. The concept appears feasible and work is being pursued on 2 fronts; production of specialist tracer compounds with enhanced response and diversity to ease identification and, developing a preproduction sorting machine to enable the technique to be applied to real waste materials. This latter development addresses the practical problems of presentation and separation as well as the identification and decision making software aspects. A separation at a rate of 10 particles per s is the aim. Some concern has arisen over the longer term feasibility and acceptability of the chemical marking concept (eg effect of recycling on discrimination and gaining the widespread acceptance of polymer manufacturers necessary for an effective system). This system is competitive with the direct polymer identification methods developed.
State of the art review.
Screening of spectroscopic and other techniques.
Preliminary screening of chemical markers.
Examples of chemicals to be evaluated:
Fluorescent markers: substances based on stilbene sulphonic acid
Ultraviolet markers: substances based on 2 (o-hydroxyphenil)-benztriazole substance based on o-hydroxy benzophenone X-ray fluorescent markers; substances containing metals/elements such as copper, manganese, phosphorus
All chemical markers would be selected from the plastics additives list in the draft EC document for a Directive on plastic materials and articles intended to come into contact with foodstuffs' or selected from other current EC Member States national lists of substances approved for use in plastics intended to come into contact with foodstuffs.
Preliminary blending and coating trials
Sheet evaluation
Pilot plant blending tests
Material conversions
Method assessment
Control of safety
Physical property check
Proving and final trial
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology other engineering and technologies food technology
- natural sciences chemical sciences inorganic chemistry transition metals
- natural sciences chemical sciences polymer sciences
- social sciences sociology social issues social inequalities
- engineering and technology materials engineering coating and films
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
KT22 7RU LEATHERHEAD
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.