All Stories

  1. Study on Changing Free-Volume Hole Size of Polylactic Acid by Annealing and Its Influence on Enzymatic Degradation Rate

    Article • ACS Sustainable Resource Management, November 2025, American Chemical Society (ACS)

    Ryota Watanabe

  2. End-group analysis of polycarbonates using evolved gas analysis-time-of-flight mass spectrometry combining principal component analysis and Kendrick mass defect analysis

    Article • Journal of Analytical and Applied Pyrolysis, November 2025, Elsevier

    Ryota Watanabe

  3. Elucidating Structural Variations at Heterogeneous Interfaces in Polymer Blends Using Evolved Gas Analysis with Time-of-Flight Mass Spectrometry Under Field Ionization

    Article • Analytical Chemistry, August 2025, American Chemical Society (ACS)

    Ryota Watanabe

  4. Room-temperature processed epoxy-silica nanocomposite coating for improved hardness and UV protection of polycarbonate

    Article • Polymer Degradation and Stability, August 2025, Elsevier

    Ryota Watanabe

  5. Biodegradable Properties of PET Analogous Furan‐Based Polyesters in the Seas

    Article • ChemistrySelect, May 2025, Wiley

    Ryota Watanabe

  6. Structural Analysis of Polymer Composites Using a Combined Approach of Fourier Transform Infrared Microscopy and Two-Dimensional Correlation Spectroscopy

    Article • Seikei-Kakou, March 2025, The Japan Society of Polymer Processing

    Ryota Watanabe

  7. High-Resolution TG-TOFMS Coupled with Principal Component Analysis and Kendrick Mass Defect Analysis: Elucidation of Molecular-Scale Degradation Behavior of Glass Fiber Reinforced Polypropylene during Thermo-Oxidative Degradation

    Article • Analytical Chemistry, January 2025, American Chemical Society (ACS)

    Ryota Watanabe

  8. Nacre-Inspired Nanocomposites from Natural Polypeptide ε-Poly-l-Lysine and Natural Clay Montmorillonite: Remarkable Reinforcing Effect at Low Polymer Content and Its Mechanism

    Article • Biomacromolecules, October 2024, American Chemical Society (ACS)

    Ryota Watanabe

  9. Quantitative evaluation of particle–binder interactions in ceramic slurries via differential centrifugal sedimentation

    Article • Scientific Reports, August 2024, Springer Science + Business Media

    Ryota Watanabe

  10. Revealing Molecular-Scale Structural Changes in Polymer Nanocomposites during Thermo-Oxidative Degradation Using Evolved Gas Analysis with High-Resolution Time-of-Flight Mass Spectrometry Combined with Principal Component Analysis and Kendrick Mass Def...

    Article • Analytical Chemistry, January 2024, American Chemical Society (ACS)

    Ryota Watanabe

  11. Hidden correlation between rheological dynamics and crack formation in water-based slurry

    Article • Journal of the European Ceramic Society, December 2023, Elsevier

    Ryota Watanabe

  12. Real-time monitoring of the thermooxidative degradation behavior of poly(acrylonitrile-butadiene-styrene) using isothermal in-situ Fourier transform infrared spectroscopy combined with principal component analysis

    Article • Polymer, September 2023, Elsevier

    Ryota Watanabe

  13. Easy and scalable synthesis of a lignosulfonate-derived thermoplastic with improved thermal and mechanical properties

    Article • Composites Part B Engineering, April 2023, Elsevier

    Ryota Watanabe

  14. Kendrick mass defect analysis-based data mining technique for trace components in polyolefins observed by pyrolysis-gas chromatography/high-resolution mass spectrometry

    Article • Journal of Analytical and Applied Pyrolysis, March 2023, Elsevier

    Ryota Watanabe

  15. Photodegradation behavior of polyethylene terephthalate analyzed by MALDI-TOFMS and ATR-FTIR microscopic analysis in combination with two-trace two-dimensional (2T2D) correlation mapping

    Article • Polymer Degradation and Stability, February 2023, Elsevier

    Ryota Watanabe

  16. Depolymerization of robust polyetheretherketone to regenerate monomer units using sulfur reagents

    Article • Communications Chemistry, January 2023, Springer Science + Business Media

    Ryota Watanabe

  17. Network Degradation Assessed by Evolved Gas Analysis–Mass Spectrometry Combined with Principal Component Analysis (EGA–MS–PCA): A Case of Thermo-Oxidized Epoxy/Amine Network

    Article • Macromolecules, January 2023, American Chemical Society (ACS)

    Ryota Watanabe

  18. In-situ infrared cure monitoring combined with two-trace two-dimensional (2T2D) correlation analysis to elucidate the matrix–filler interaction of nanocomposites: Case of thermosetting urethane/silica nanospheres

    Article • Polymer Testing, April 2022, Elsevier

    Ryota Watanabe

  19. Molecular-scale deformation of glass-fiber-reinforced polypropylene probed by rheo-optical Fourier transform infrared imaging combined with a two-trace two-dimensional correlation technique

    Article • Polymer, February 2022, Elsevier

    Ryota Watanabe

  20. Amorphous polyamide m ‐xylylenediamine‐adipic acid‐isophthalic acid copolymer (MXD6I) : Evaluation of oxygen barrier property and free volume in high humidity condition

    Article • Polymers for Advanced Technologies, January 2022, Wiley

    Ryota Watanabe

  21. 顕微赤外分光法による高分子とフィラー界面構造の可視化

    Article • NIPPON GOMU KYOKAISHI, January 2022, Society of Rubber Industry, Japan

    Ryota Watanabe

  22. Rheo-optical Near-infrared (NIR) Analysis of Binary Amorphous Polymer Blend Consisting of Polyvinyl Chloride (PVC) and Polymethyl Methacrylate (PMMA)

    Article • Analytical Sciences, September 2021, Japan Society for Analytical Chemistry

    Ryota Watanabe

  23. Three-way evolved gas analysis-mass spectrometry combined with principal component analysis (EGA-MS-PCA) to probe interfacial states between matrix and filler in poly(styrene-b-butadiene-b-styrene) (SBS) nanocomposites

    Article • Polymer Testing, September 2021, Elsevier

    Ryota Watanabe

  24. Biobased and mechanically stiff lignosulfonate/cationic-polyelectrolyte/sugar complexes with coexisting ionic and covalent crosslinks

    Article • Polymer Journal, May 2021, Springer Science + Business Media

    Ryota Watanabe

  25. Aging of polypropylene probed by near infrared spectroscopy

    Article • Journal of Near Infrared Spectroscopy, April 2021, SAGE Publications

    Ryota Watanabe

  26. Fourier Transform Infrared Imaging Analysis of Interactions Between Polypropylene Grafted with Maleic Anhydride and Silica Spheres Using Two-Trace Two-Dimensional Correlation Mapping

    Article • Applied Spectroscopy, April 2021, SAGE Publications

    Ryota Watanabe

  27. In Situ Fourier Transform Infrared Spectroscopic Imaging for Elucidating Variations in Chemical Structures of Polymer Composites at the Matrix–Filler Interface during Reactive Processing

    Article • Macromolecules, December 2020, American Chemical Society (ACS)

    Ryota Watanabe

  28. Insight into interfacial compatibilization of glass-fiber-reinforced polypropylene (PP) using maleic-anhydride modified PP employing infrared spectroscopic imaging

    Article • Composites Science and Technology, October 2020, Elsevier

    Ryota Watanabe

  29. A study of molecular architectural dynamics of crosslinked urethane during photo-aging by two-dimensional infrared correlation spectroscopy

    Article • Polymer Degradation and Stability, September 2020, Elsevier

    Ryota Watanabe

  30. Molecular-Scale Deformation of Polypropylene/Silica Composite Probed by Rheo-Optical Fourier Transform Infrared (FTIR) Imaging Analysis Combined with Disrelation Mapping

    Article • Analytical Chemistry, August 2020, American Chemical Society (ACS)

    Ryota Watanabe

  31. Polypropylene-Based Nanocomposite with Enhanced Aging Stability by Surface Grafting of Silica Nanofillers with a Silane Coupling Agent Containing an Antioxidant

    Article • ACS Omega, May 2020, American Chemical Society (ACS)

    Ryota Watanabe

  32. Accelerated aging-induced variation of polypropylene (PP) structure studied by two-dimensional (2D) small-angle X-ray scattering (SAXS) correlation spectroscopy

    Article • Journal of Molecular Structure, May 2020, Elsevier

    Ryota Watanabe, Professor Masatoshi Tokita

  33. Solvent-induced degradation of polyurethane studied by two-dimensional (2D) infrared (IR) correlation spectroscopy

    Article • Vibrational Spectroscopy, May 2020, Elsevier

    Ryota Watanabe

  34. Study of matrix-filler interaction of polypropylene/silica composite by combined infrared (IR) spectroscopic imaging and disrelation mapping

    Article • Composites Part A Applied Science and Manufacturing, January 2020, Elsevier

    Ryota Watanabe

  35. Rheo-Optical Near-Infrared (NIR) Characterization of Hydroxyl-Functionalized Polypropylene (PPOH)-Mesoporous Silica Nanocomposites Using Two-Trace Two-Dimensional (2T2D) Correlation Analysis

    Article • Applied Spectroscopy, July 2019, SAGE Publications

    Ryota Watanabe

  36. Degradation mechanism of carbon fiber-reinforced thermoplastics exposed to hot steam studied by chemical and structural analyses of nylon 6 matrix

    Article • Composites Part A Applied Science and Manufacturing, September 2018, Elsevier

    Ryota Watanabe

  37. Structure−property relationships of polypropylene-based nanocomposites obtained by dispersing mesoporous silica into hydroxyl-functionalized polypropylene. Part 2: Matrix−filler interactions and pore filling of mesoporous silica characterized by evolve...

    Article • Polymer Journal, July 2018, Springer Science + Business Media

    Ryota Watanabe

  38. Structure-property relationships of polypropylene-based nanocomposites obtained by dispersing mesoporous silica into hydroxyl-functionalized polypropylene. Part 1: toughness, stiffness and transparency

    Article • Polymer Journal, June 2018, Springer Science + Business Media

    Ryota Watanabe

  39. Structure-property relationship of toughened polypropylene nanocomposites

    Article • Polymers for Advanced Technologies, August 2017, Wiley

    Ryota Watanabe

  40. Reinforcement mechanism of functionalized polypropylene containing hydroxyl group nanocomposites studied by rheo-optical near-infrared spectroscopy

    Article • European Polymer Journal, July 2017, Elsevier

    Ryota Watanabe

  41. Direct Power Charge and Discharge Using the Glycolic Acid/Oxalic Acid Redox Couple toward Carbon-Neutral Energy Circulation

    Article • ECS Transactions, January 2017, The Electrochemical Society

    Ryota Watanabe

  42. All-solid-state lithium–sulfur batteries with three-dimensional mesoporous electrode structures

    Article • Journal of Power Sources, October 2016, Elsevier

    Ryota Watanabe

  43. Highly ductile polypropylene-based nanocomposites by dispersing monodisperse silica nanospheres in functionalized polypropylene containing hydroxyl groups

    Article • Polymer, September 2016, Elsevier

    Ryota Watanabe

  44. Hydrogenation of oxalic acid using light-assisted water electrolysis for the production of an alcoholic compound

    Article • Green Chemistry, January 2016, Royal Society of Chemistry

    Ryota Watanabe

  45. CO2-free electric power circulation via direct charge and discharge using the glycolic acid/oxalic acid redox couple

    Article • Energy & Environmental Science, January 2015, Royal Society of Chemistry

    Ryota Watanabe

  46. Pressureless Bonding by Use of Cu and Sn Mixed Nanoparticles

    Article • Journal of Electronic Materials, September 2014, Springer Science + Business Media

    Ryota Watanabe

  47. High-Strength Pressure-Free Bonding Using Cu and Ni-Sn Nanoparticles

    Article • Particle & Particle Systems Characterization, February 2014, Wiley

    Ryota Watanabe

  48. Pressure-Free Bonding of Metallic Plates with Ni Affinity Layers Using Cu Nanoparticles

    Article • Journal of Electronic Materials, January 2014, Springer Science + Business Media

    Ryota Watanabe

  49. Enhancement of pressure-free bonding with Cu particles by the addition of Cu–Ni alloy nanoparticles

    Article • Journal of Materials Chemistry C, January 2014, Royal Society of Chemistry

    Ryota Watanabe

  50. Reaction mechanism of all-solid-state lithium–sulfur battery with two-dimensional mesoporous carbon electrodes

    Article • Journal of Power Sources, December 2013, Elsevier

    Ryota Watanabe

  51. Size- and Shape-Controlled Syntheses of Colloidal Sn, Te, and Bi Nanocrystals

    Article • Bulletin of the Chemical Society of Japan, May 2013, The Chemical Society of Japan

    Ryota Watanabe

  52. All-solid-state Li–sulfur batteries with mesoporous electrode and thio-LISICON solid electrolyte

    Article • Journal of Power Sources, January 2013, Elsevier

    Ryota Watanabe

  53. Development of Low-Temperature Sintering Cu Nanoparticles

    Article • MRS Proceedings, January 2013, Cambridge University Press

    Ryota Watanabe

  54. A new one-pot method for the synthesis of Cu nanoparticles for low temperature bonding

    Article • Journal of Materials Chemistry, January 2012, Royal Society of Chemistry

    Ryota Watanabe

  55. Facile control of crystallite size of ZSM-5 catalyst for cracking of hexane

    Article • Microporous and Mesoporous Materials, November 2011, Elsevier

    Ryota Watanabe

  56. Extension of size of monodisperse silica nanospheres and their well-ordered assembly

    Article • Journal of Colloid and Interface Science, August 2011, Elsevier

    Ryota Watanabe

  57. Synthesis and application of colloidal nanocrystals of the MFI-type zeolites

    Article • Journal of Colloid and Interface Science, April 2011, Elsevier

    Ryota Watanabe

  58. All Solid-State Lithium-Sulfur Battery Using Mesosized Electrode Structure and Thio-LISICON

    Article • ECS Meeting Abstracts, May 2010, The Electrochemical Society

    Ryota Watanabe

  59. Mechanism of Formation of Uniform-Sized Silica Nanospheres Catalyzed by Basic Amino Acids

    Article • Chemistry of Materials, August 2009, American Chemical Society (ACS)

    Ryota Watanabe

  60. All Solid-state Lithium-sulfur Battery Using Meso-sized Electrode Structure

    Article • ECS Meeting Abstracts, July 2009, The Electrochemical Society

    Ryota Watanabe

  61. All Solid State Batteries with Meso-sized Electrode Structure using Solid Electrolyte, thio-LISICON

    Article • ECS Meeting Abstracts, August 2008, The Electrochemical Society

    Ryota Watanabe

  62. All solid-state battery with sulfur electrode and thio-LISICON electrolyte

    Article • Journal of Power Sources, August 2008, Elsevier

    Ryota Watanabe

  63. Synthesis of well-ordered nanospheres with uniform mesopores assisted by basic amino acids

    Article • January 2007, Elsevier

    Ryota Watanabe