• Papers

1. Development of technology for thermal decomposition of plastics in a solvent.
2. Development of technology to recover chlorofluorocarbon in foaming resin
3. Conversion from waste plastics to hydrogen with molten alkali compounds
4. Standardization Research

Development of technology for thermal decomposition of plastics in a solvent.

Dielectric constant, polarity, hydrogen donability, metal, mineral salt, primary and secondary structure of polymer are very important factors for thermal decomposition of plastics in solvents. In our research, we are developing innovated new technology to recover waste plastics as material and energy resources by using specific reaction field between polymer and solvents. Our research group succeeded to dissolve and remove halogen from PVC and epoxy resin containing bromine flame-retardant by using thermal decomposition in solvents.

Development of technology to recover chlorofluorocarbon in foaming resin

Large-scale centralized treatment on the assumption of long-distance transportation is not only economical but also unsuitable for grovel environment, because density of thermal insulation such as foaming resin is very low. In this research, we are developing a vehicle-installed equipment to recover and decompose chlorofluorocarbon in foaming resin under mild reaction condition.

Conversion from waste plastics to hydrogen with molten alkali compounds

Hydrogen gas is expected to be an important energy source for fuel cell in distributed energy supply system. We are developing a future technology to convert waste plastics in shredder dust to hydrogen directly with molting alkaline compounds.

Standardization Research

Standardization of the determination method of the bromine content in waste plastics.

In order to reuse plastics in waste electric and electronic equipments or end of use vehicle effectively, establishment of standard measurement method of bromine content in a solid and liquid sample is very important, because bromine flame retardant is contained in the shredder dust. In this research, hydrogen bromide produced from burning of the sample is absorbed in water contains reducing agent is measured by an ion chromatograph.

Standardization of the appraisal method for the recycling efficiency of waste plastics contains bromine-flame retardant.

Incombustibility, and safety for human and environment are important appraisal items for flame retardant. This research aims at establishing the recycling efficiency, as new third appraisal items for flame retardant.

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