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1CO2 UTILIZATION CO2ASAPOLYMERBUILDINGBLOCK Fig. 14: Applications for PPC (from left): PPC granulate, film composed of PPC blend, WPCs, PPC dispersions, foams, casing material made from PPC polymer blends 1.3.4 Exploitation, commercialisation and dissemination of results The BMBF-funded project ‘CO2 as a polymer building block’ was part of the BMBF research and development programme ‘Technologies for Sustainabi- lity and Climate Protection – Chemical Processes and Use of CO2’. The aim of the project was to develop new and improved catalysts for the polyme- risation of CO2 and epoxides. The properties and potential areas of appli- cation of the product materials were also studied. A theoretical model was developed that was used to design and successfully predict the activity of catalysts for the polymerisation of CO2 with epoxides (particularly ethylene oxide (EO), propylene oxide (PO), cyclohexene oxide (CHO)). Theoretical modelling of this type is one the cornerstones of developing an industrial- scale polymerisation process. The systems identified show great potential for future optimisation. However, it is essential that the activity of the ca- talysts is improved if industrial applications are to be viable. The CO2-based polymer poly(propylene carbonate) (PPC) is very well suited for blending with other biopolymers such as polyester, PLA and PHAs (e.g. PHB). Areas in which these materials can be used include the packaging sector and injec- tion moulding applications (e.g. injection moulded casings, housings). PPC film also performed well in initial tests that examined its suitability for use in carrier bags and as agricultural film. Although PPC is unsuitable for use as a pure film due to its low heat-distortion temperature and stickiness, it was shown to improve the performance of the packaging systems studied when it was used as a component in blended polymers or as a layer in multilayer films. Overall the project produced a number of important results in the field of catalysis and addressed numerous applications-driven problems. The results achieved represent a substantial contribution in assessing the industrial po- tential of these new CO2-based polymeric materials. 42PDF Image | Chemical Processes and Use of CO2
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