Kyushu University Academic Staff Educational and Research Activities Database
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Shingo Yokota Last modified date:2019.08.20

Assistant Professor / Sustainable Bioresources Science
Department of Agro-environmental Sciences
Faculty of Agriculture


Graduate School
Undergraduate School


E-Mail
Phone
092-642-3000
Fax
092-642-3000
Academic Degree
PhD
Field of Specialization
Polysaccharide materials chemistry
Research
Research Interests
  • Surface chemical modification of cellulose nanomaterials
    keyword : Cellulose, Nanomaterial, Surface/interface, Chemical modification
    2010.10.
  • Structural and functional design of layered cellulosic materials
    keyword : Cellulose, Surface/interface, Self-assembly, Controlled polymerization
    2010.10.
Academic Activities
Reports
1. Blaise L. Tardy, Shingo Yokota, Mariko Ago, Wenchao Xiang, Tetsuo Kondo, Romain Bordes, Orlando J. Rojas, Nanocellulose–surfactant interactions, Current Opinion in Colloid & Interface Science, 2017.05, Biomass-derived nanomaterials, such as cellulose nanocrystals and nanofibrils, are attractive building blocks for the formulation of foams, emulsions, suspensions and multiphase systems. Depending on their surface chemistry, aspect ratio and crystallinity, nanocelluloses can control the rheology and stability of dispersions; they can also confer robust mechanical properties to composites. Synthetic modification of fibrillar cellulose is an option to achieve chemical compatibility in related systems, in the formation of composites, etc. However, this can also limit the environmental benefits gained from the use of the cellulosic component. Thus, an attractive mean to compatibilize and to further expand the applications of nanocelluloses is through the use of surfactants. The chemical toolbox of surfactants developed over the last 60 years allows for a large versatility while their environmental impact can also be minimized. Furthermore, relatively small amounts of surfactants are sufficient to significantly impact the interfacial forces, which has implications in material development, from the colloidal scale to the macro-scale. In this review we attempt to cover the literature pertaining to the combined uses of surfactants and nanocelluloses. We summarize reports on the incorporation with nanocellulose of nonionic, anionic, amphoteric and cationic surfactants. With the ever-expanding interest in the use of renewable materials in a vast range of applications, we hope to provide insights into the application of surfactants as a tool to tailor the compatibility and the surface chemistry of nanocelluloses..
2. Takuya Kitaoka, Shingo Yokota, Martina Opietnik, Thomas Rosenau, Synthesis and bio-applications of carbohydrate-gold nanoconjugates with nanoparticle and nanolayer forms, Materials Science and Engineering C: Materials for Biological Applications, 31(6), 1221-1229, 2011.08.
Papers
1. Mayumi Hatakeyama, Daisuke Ryuno, Shingo Yokota, Hirofumi Ichinose, Takuya Kitaoka, One-step synthesis of cellooligomer-conjugated gold nanoparticles in a water-in-oil emulsion system and their application in biological sensing, Colloids and Surfaces B: Biointerfaces, 10.1016/J.colsurfb.2019.02.051, 178, 1, 74-79, 2019.06.
2. Siqi Huan, Shingo Yokota, Long Bai, Mariko Ago, Maryam Bohghei, Tetsuo Kondo, Orlando J Rojas, Formulation and Composition Effects in Phase Transitions of Emulsions Costabilized by Cellulose Nanofibrils and an Ionic Surfactant, Biomacromolecules, 10.1021/acs.biomac.7b01452, 18, 12, 4393-4404, 2017.12.
3. Kunio Tsuboi, Shingo Yokota, Tetsuo Kondo, Difference between bamboo- and wood-derived cellulose nanofibers prepared by the aqueous counter collision method, Nordic Pulp & Paper Research Journal, 29, 1, 69-76, 2014.02.
Presentations
1. Shingo Yokota, Koki Miura, Tetsuo Kondo, Oriented deposition of bacterial nanocellulose induced by nematic ordered cellulose templates with unique surface energy distribution, 257th American Chemical Society National Meeting & Exposition 2019, 2019.04.
2. Eiko Megan Uchida, Shingo Yokota, Tetsuo Kondo, Novel nanocomposites prepared from polypropylene micro-particles coated with amphiphilic ACC bamboo nanocellulose, The 4th International Cellulose Conference 2017, 2017.10.
3. Shingo Yokota, Koki Miura, Tetsuo Kondo, Oriented deposition of nanocellulose secreted from Gluconacetobacter xylinus induced by nematic ordered cellulose templates with unique surface energy distribution, The 4th International Cellulose Conference 2017, 2017.10.
4. Orlando J. Rojas, Siqi Huan, Long Bai, Shingo Yokota, Mariko Ago, Maryam Borghei, Wenchao Xiang, Tetsuo Kondo, Nanocellulose-surfactant interactions and their role in emulsions, The 4th International Cellulose Conference 2017, 2017.10.
5. Shingo Yokota, Keita Kamada, Mariko Ago, Orlando J. Rojas, Tetsuo Kondo, Surface active nanocellulose prepared by the aqueous counter collision method, 5th EPNOE Internationla Polysaccharide Conference, 2017.08.
6. Shingo Yokota, Keita Kamada, Mariko Ago, Orlando J. Rojas, Tetsuo Kondo, Emulsification Behavior of Amphiphilic Nanocellulose Prepared by Aqueous Counter Collision, International Conference on Nanotechnology for Renweable Materials 2017, 2017.06.
7. Siqi Huan, Shingo Yokota, Mariko Ago, Maryam Borghei, Tetsuo Kondo, Orlando J. Rojas, Cellulose nanofibrils in emulsions stabilized by anionic surfactant and effect of electrolyte in phase transitions, 253rd American Chemical Society National Meeting & Exposition, 2017.04.
8. Tetsuo Kondo, Tsuboi Kunio, Shingo Yokota, Determination of hydrophobicity in amphiphilic nanocellulose imparted by Aqueous Counter Collision (ACC), 253rd American Chemical Society National Meeting & Exposition, 2017.04.
9. Shingo Yokota, Keita Kamada, Tetsuo Kondo, Pickering emulsion stabilized using amphiphilice ACC-nanocellulose, Recent advances in cellulose nanotechnology research, 2016.10.
10. Airi Nishimoto, Shingo Yokota, Tetsuo Kondo, Surface activation of ACC-nanocellulose for chemical modification in an aqueous system, 251st American Chemical Society National Meeting & Exposition, 2016.03.
11. Shingo Yokota, Tetsuo Kondo, Chemical modification of cellulose nanofibers via surface activation in an aqueous dispersion system, 2016 EMN Cellulose Meeting, 2016.03.
12. Keita Kamada, Shingo Yokota, Tetsuo Kondo, Pickering emulsion stabilized using amphiphilic cellulose nanofibers prepared by the aqueous counter collision method, The International Chemical Congress of Pacific Basin Societies 2015, 2015.12.
13. Shingo Yokota, Shiro Sakoda, Tetsuo Kondo, Interfacial molecular design of nematic ordered cellulose templates for epitaxial nanodeposition, International Symposium on Wood Science and Technology 2015, 2015.03.
14. Hikari Utsunomiya, Shingo Yokota, Tetsuo Kondo, Preferential subfibrillation from reducing ends in the initial stage of nano-pulverization using aqueous counter collision, International Symposium on Fiber Science and Technology (ISF2014) , 2014.09.
15. Yutaro Tsujita, Shingo Yokota, Tetsuo Kondo, Self-assembling behaviors of collagen nanofibers in the aqueous dispersions prepared by the aqueous counter collision method, International Symposium on Fiber Science and Technology (ISF2014) , 2014.09.
16. Shingo Yokota, Tetsuo Kondo, Surface reactivity in an aqueous system of bio-nanofibers prepared by the aqueous counter collision method, International Symposium on Fiber Science and Technology (ISF2014) , 2014.09.
17. Yutaro Tsujita, Shingo Yokota, Tetsuo Kondo, Collagen nanofibers as a novel building block prepared by the aqueous counter collision method, 247th ACS National Meeting, 2014.03.
18. Kunio Tsuboi, Shingo Yokota, Tetsuo Kondo, Difference between bamboo- and wood-derived cellulose nanofibers prepared by aqueous counter collision method, 20143 Kyushu-Seibu/Pusan-Gyeongnam Joint Symposium on High Polymers(16th) and Fibers(14th), 2013.11.
19. Shingo Yokota, Shiro Sakoda, Tetsuo Kondo, Interfacial design of nano-sized and nano-structured cellulose materials by chemical modification, The 3rd EPNOE 2013 International Polysaccharide Conference, 2013.10.
20. Hikari Utsunomiya, Shingo Yokota, Tetsuo Kondo, Preferential cleavage of reducing ends in cellulose fibers for nano-pulverization using aqueous counter collision, The 3rd EPNOE 2013 International Polysaccharide Conference, 2013.10.
21. Saki Nagamoto, Tetsuya Takahashi, Shingo Yokota, Tetsuo Kondo, Polysaccharide nanofibers secreted by the pink snow mold fungus in Antarctica depending on temperature stress, The 3rd EPNOE 2013 International Polysaccharide Conference, 2013.10.
22. Shingo Yokota, Tetsuo Kondo, Surface acetylation of cellulose-based nanofibers prepared by aqueous counter collision
, The 17th International Symposium on Wood, Fibre and Pulping Chemistry, 2013.06.