Student written Research Laboratory Guidebook 2025Nagaoka University of Technology

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Green chemical resources laboratory

Professor / KAWAHARA Seiichi  Assistant Professor / YAMANO Masaki
  • Analysis of vulcanization mechanism
  • Mass production of protein-free natural rubber
  • Creation of functional soft materials with nanomatrix structure

Professor / KAWAHARA Seiichi
Prof. Kawahara leads study on natural rubber science and technology at the forefront.
Despite his busy schedule, he directly supervises us in the laboratory. He always has a smile on his face and is always ready to give us research tips when we are in trouble, which is very reassuring.

Research Content

We are conducting unique researches to create a new chemistry to produce various substances and materials from natural rubber: that is, natural rubber chemistry.
We believe that we can establish a sustainable society that does not depend on petrochemicals by using natural rubber, which is a green resource and has excellent physical and mechanical properties, as a raw material. We have developed novel soft materials with a nanomatrix structure by graft copolymerization of monomers onto natural rubber. In particular, we expertise analyses of natural rubber through chemical structural analysis with a nuclear magnetic resonance (NMR) spectrometer and higher order structural analyses with a transmission electron microscope (TEM) and focused-ion microbeam-scanning electron microscope (FIB-SEM).

Deproteinization of natural rubber

A Day in the Lab

The use of time in the laboratory is flexible but we are mainly active between 9:00 and 19:00.
As for the flow of the day, students start studying and working in the laboratory around 9:00 a.m., and then go home as soon as they finish research.
Seminars include English textbook study, Japanese textbook study and introducing reserch papers. Recreational activities are held throughout the year. We have cherry‐blossom viewing (Hanami) party in the spring, fireworks viewing (Hanabi) party in the summer, Christmas party and ski trip in the winter, and other activities to deepen friendship with all members.

Laboratory Members

Thesis Subjects

  • (D)Structural analysis of vulcanized natural rubber using rubber state NMR spectroscopy
  • (M)Effect of glass transition temperature of nanoparticles on mechanical properties of natural rubber with island-nanomatrix structure

The number of
PhD Graduates

20

Major employers of Graduates

  • THE YOKOHAMA RUBBER. , LTD.
  • NOK CORP.
  • KOKOKU INTECH CO. , LTD.
  • SUMITOMO RIKO CO. , LTD.
  • Chemical Evaluation and Research Inst.
  • Fuji Latex Co. , LTD.
  • YAMASHITA RUBBER CO. , LTD.
  • NAMICS CORP.
  • OKAMOTO INDUSTRIES, INC.
  • NICHIAS CORP.
Writer : SASAKI Anna, Materials Science and Engineering/Bioengineering
(National Institute of Technology,Tokyo College)