ブックタイトル高分子　POLYMERS　62巻10月号

概要

高分子　POLYMERS　62巻10月号

Digest for English Readersand heat-insulation. It can easily be carbonized at thetemperature higher than 500℃in non-oxygen atmosphere.The special feature of bagasse-char is the excellent solarlightabsorption ability in a wide range of wave lengths.This novel property of bagasse char can be applicable tosolar-light absorption materials, heat-insulator materials,and desalination materials from sea-water.Keywords: Bagasse / Biomass / Solar / Pore / Absorption /Desalination / Carbonization / CharcoalPolyMANGA 604COVER STORY: Topics and ProductsPhase Change Material for Cooling ApplicationLoaded Microcapsule for Thermal StorageSystemMasahiro YOSHIDADoctor of engineeringDepartment of Chemical Engineering, GraduateSchool of Engineering, Kagoshima UniversityProfessormyoshida@cen.kagoshima-u.ac.jphttp://ace.cen.kagoshima-u.ac.jp/~koubutsu/Takayuki TAKEIDoctor of engineeringDepartment of Chemical Engineering, GraduateSchool of Engineering, Kagoshima UniversityAssociate professortakei@cen.kagoshima-u.ac.jphttp://ace.cen.kagoshima-u.ac.jp/~koubutsu/605In the present study, we attempted to prepare phasechange material (PCM)-loaded microcapsules ofseveral hundred micrometers in diameter via surfacepolymerization. An oil phase with two types of isocyanatemonomers (2,4-toluene diisocyanate (TDI) and phenylisocyanates (PI)) and fatty acids as PCM was dispersedin an aqueous phase. The polyurea shell of microcapsuleswas formed by reaction of the isocyanate monomers withthe amine groups derived from hydrolyzed isocyanatemonomers. Adjusted agitation rate made it possible toprepare the microcapsules of several hundred micrometersin diameter. Increased molar ratio of TDI to PI in oil phaseresulted in improvement of microcapsule morphology.Increased weight ratio of fatty acids to the two isocyanatemonomers (TDI and PI) leaded to increase in the contentof the PCM in the microcapsules, which is preferable forpractical application. An examination using differentialscanning calorimetry analyzer demonstrated that polyureashell of the microcapsules scarcely influenced thermalproperties of encapsulated fatty acids.Keywords: Microencapsulation / Phase Change Material /Fatty Acid / Polyurea Shell / Thermal Storage System /Surface PolymerizationHeat Shield Technology with Nano Silver 607PavementTakeharu TANIFrontier Core-Technology Laboratories Research& Development Management HeadquartersFUJIFILM CorporationResearch Scientisttakeharu_tani@fujifilm.co.jpwww.fujifilm.jpWe made a wavelength selective reflection film withnano silver pavement. Simulation results show thatclosely packed silver nano-disks sispersed in a monolayercan reflect near infrared light. The fabricated film istransparent for visible light. This film can be used for heatshield film on a window glass.Keywords: Heat Shield / Silver / Plasmon / FDTD /MetasurfaceCarbon Nanotube/Polymer Composites HavingHigh Thermal Conductivity and ElectricalInsulationKenzo FUKUMORIDoctor of EngineeringToyota Central R&D Labs., Inc.Organic Materials and Processing Lab.Principal Researcherfukumori-k@mosk.tytlabs.co.jpwww.tytlabs.co.jp609With their excellent mechanical, electrical, and thermalproperties, carbon nanotubes (CNTs) have recentlyattracted attention as nanofillers that may efficientlyimprove the physical properties of polymers. In practice,CNTs have not yet been incorporated into polymermatrices in order to enhance the thermal conductivity ofelectrically insulating polymer components because evena few CNTs impart a high electrical conductivity to thepolymers. We design and propose a novel morphologicalmodel for CNT/polymer composites with high thermalconductivity and electrical insulation. In the proposedmorphology, the CNT/polymer composites are composedof a matrix polymer and a CNT-localizing domain polymerencapsulated by a shell-forming component, whichcontributes to the selective localization of the CNTs intothe dispersed domains. In engineering applications of theproposed model, the CNT/polymer composites used asthe polymer matrix are expected to efficiently provideoutstanding thermal conductivity and high electricalinsulation at lower loadings of thermally conductiveinorganic fillers.Keywords: Carbon Nanotube / Polymer Blend / Composite /Morphology / Thermal Conductivity / Electrical Insulation /Inorganic Filler高分子62巻10月号（2013年）c2013 The Society of Polymer Science, Japan591