BL1-5 ProPhos

The innovative core of the ProPhos project consists of using bio-based polyphosphate with bacteriostatic properties and release systems for bio-based plastic as renewable input variables for the production of functionalised plastics. The project focuses on the synthesis of long-chain polyphosphates and the quantification of the growth-inhibiting effect. The development of a biotechnological production process of phosphate from biogenic residues, for example de-oiled seeds and bran, was carried out in cooperation between biotechnology and the iAMB at the RWTH and a patent application was filed.

Based on the expertise at the DWI-Leibniz Institute for Interactive Materials, these polyphosphates are embedded in plastics for the manufacture of consumer goods, for example toys and ballpoint pens, or in films for plastic packaging in the food sector or agricultural films, or coated on the surface with the aim of slow release of polyphosphate in the application. Polymer-based systems for the release of nutrient substrates, such as salt and glucose, were co-developed and commercialised at DWI and RWTH. The developed release system for polyphosphates is being used for the functionalisation of bioplastics and a prototype is being created.

The prototypes provide proof that consumer goods functionalised with polyphosphate can be produced from renewable raw materials, i.e. bio-based plastics. The combination of bio-based plastics and bio-polyphosphate leads to a new material development for the packaging and agricultural industry, but also for the production of consumer goods.