34PowderSoaked in aqueous NH3of polyesterRelease of the monomer AssociateProfessorKOHSAKAYasuhiroProf.KohsakareceivedhisPh.D.fromTheTokyoTech.in2011.HestartedhisacademiccarrierasanassistantOsakaUniversityandmovedtoShinshuUniversityin2015.HewasselectedinJSPSPRESTOprogramin2022.In2023,heisreceivedthetitleof‘RisingfromShinshuUniversityand‘theMEXTYoungScientists'PrizefromMEXT.AssociateProfessorKOYAMAToshikiAssociateProfessorKoyamatookhiscurrentpositionin1998afterservingintheFacultyofTextileScienceandTechnologyatShinshuUniversityasanassistantprofessorandseniorassistantprofessor.Hisphysicalareaofchemistrythedevelopmentoffunctionalpolymermaterialsanddevicesinspiredbythemovementofelectronsandionsinlivingorganisms.Althoughpolymermaterials,e.g.fibers,plasticsandrubbersareessentialinourdailylife,theirwastecausessocialproblemsuchasmarinepollutionanddepletionofpetroleumresources.Prof.Kohsakainvestigatesthedevelopmentsofnewpolymermaterialsredesignedfromthestartingmoleculesinordertosolvetheseproblems.Forexample,hedevelopedanewpolymermaterialdegradableinaqueousmediatoenvironment-friendlychemicals,whileasustainableplasticthatregeneratesthestartingmaterialswascreated.Healsoinnovatedanovelmethodtopreparepolyesterswithlowenergyconsumption.professorinresearcher’StarresearchrelatedistoUsing acetyl salicylic acid (aspirin), we have developed a new plastic for easy chemical recycling, a resource circulation through the decomposition to the raw materials and resyntheses. This is a first example of vinyl polymers (polymers consisting of carbon backbone) designed for chemical recycling.Polyesters decomposition in aqueous ammonia. The decomposition changes the solution color yellow by releasing the monomer.flexiblefuelcellwithaThisthicknessof4mmwasformedfromanarrayofsixcells.Astudentusesanevaluationdevicetocheckthepower-generatingpropertiesoffuelcellsbuiltwithmaterialsdevelopeddevelopedWecarbonnanoweb(CNW)electrodewithadiameterof150nm.thisOutlook for researchSincepolymerchemistrysupportschemicalindustry,wehaveachancetodiscoveranewmaterialforpracticalapplication.Wealwaysenjoyexperimentsinpurechemistry,whileourgrouphasmanycollaborationswithinter-/intra-nationalcompaniesandresearchinstitutes.Weinnovateavarietyofnovelmaterialsfromplasticsforasustainablesocietywithintelligentmaterials.Outlook for students after graduationAllstudentscontinuetheirresearchandstudiesinmasterprogramofourgraduateschoolinordertobecomeresearchers/engineersinpolymerandorganicchemistry.Manystudentsthengotocompaniesinthechemicalindustry,whilesomestudentslearnmoreinourdoctoralprogram.Outlook for researchMylabisworkingtodevelopmaterialsthatwillmakepossiblemorecompactfuelcellsthatareboththinnerandlighter.Wearerfuelcellswouldhavenumerousapplications,includingaspowersuppliesforrobotsandpowersuits.Outlook for students after graduationManygraduatesgoontocompletemaster'sprograms,afterwhichtheyusuallyfindinvolvedwithemploymentatcompanieschemicalmaterials,organicelectronicmaterials,andelectronicdevices.Iampursuingresearchintofunctionalpolymermembranesandnanofibermaterialssuchasvaporizationmembranesformicrofuelcellsthatuseneatmethanolasfuel,self-humidificationlayersforH2/O2fuelcells,carbonnano-paperasnano-porousgasdiffusionelectrodes,andnickelnano-paperforalkalinefuelcellsusingthinelectrolytemembranes.Chemistry and MaterialsChemistry and MaterialsDepartment ofDepartment ofA Great Chance to Save the World with ‘Epochal Plastic’ through Molecular DesignDeveloping thin, lightweight wearable fuel cells to supply power to robots and power suits
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