FACULTY RESEARCH ACTIVITY 2014

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Kunihiro HamadaProfessorTsutomu IshiwatariProfessorApplied ChemistryColoring and functionalizing fibers and polymeric materials through chemical processingDivision of Chemistry and MaterialsChemical processing of fibers and polymeric materials is a key process that is used to carry out coloration and functionalization (dyeing and functional finishing). The binding behavior of small molecules (dyes, functional molecules, etc.) with macromolecules plays an important role in chemical processing. Auxiliaries (additives), which influence binding behavior, are also important. My laboratory focuses on coloration and functionalization from the standpoint of interactions between small molecules and macromolecules.Professor Hamada joined the Faculty of Textile Science and Technology at Shinshu University in 1988 after working for the Research Institute for Polymers and Textiles, the Agency of Industrial Science and Technology, and the Ministry of International Trade and Industry. His principal areas of research include dyeing, functional nishing, dye chemistry, and polymer chemistry.The binding of small molecules with macromolecules is one of the most important phenomena in various research elds such as color chemistry and pharmaceutical science. Since this phenomenon is a fundamental one, an understanding of binding leads to future research.Outlook for researchGraduates are involved in research, development, business, and other operations at companies active in the elds of dyes, pigments, dyeing, nishing, bers, and chemicals.Outlook for students after graduationApplied ChemistrySearching for new principles by freely creating nanoparticles and wires and arraying and connecting themDivision of Chemistry and MaterialsI am researching ways to utilize the characteristics of organic substances such as polymers and surfactants to create (or in other words, to control the formation of) nano-scale wires, rods, tubes, ribbons, coils, and spherical particles, including by controlling their shape, picking them, combining them in pairs, protecting their surfaces, arraying them, and affixing them to one another.Professor Ishiwatari took his current position after working in the Faculty of Textile Science and Technology at Shinshu University as an assistant professor and associate professor. His original specialty is polymer chemistry, while his current work focuses on nanoscience using polymers, surfactants, and biomolecules. Professor Ishiwatari is also a fourth-dan black belt striking practitioner of Shorinji Kempo.If it were to become possible to freely connect nano-transistors in a nano-scale world, that capability would bring about signicant advances in electronic technology. My lab is carrying out research to realize a dream of the distant future.Outlook for researchGraduates are employed by a diverse array of companies, including manufacturers of pharmaceuticals, chemicals, electronic materials, automotive related materials, and textiles.Outlook for students after graduationDyes are removed using occulation of polyelectrolytes to combine with auxiliaries (bolaform electrolytes).A researcher prepares aqueous solutions containing dyes, polymers, and auxiliaries to examine binding.(CH2)nNNCH3(CH2)m-1CH3CH3CH3(CH2)m-1CH3CH3BrBr++--(CH2CH)nSO3NaResearchers perform chemosynthesis of numerous nanoparticles (upper right insert) and check the shape and size of nanoparticles using a transmission electron microscope (TEM, bottom).Spherical nanoparticles are created by combining metal and polymer nanoparticles in a 1:1 ratio.Metallic nano-wires are created using polymers.30

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