Updated on 2026/06/17

写真a

 
Vo Dai Hoang-Giang
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Special-Appointment Assistant Professor
Position
Special-Appointment Assistant Professor
External link

Degree

  • Doctor of Science ( 2025.12   Japan Advanced Institute of Science and Technology )

  • Master of Science ( 2022.9   Japan Advanced Institute of Science and Technology )

Research Interests

  • Toughening Plastics

  • Polymer Rheology

  • Polymer Physics

  • Polymer Processing

  • Poly(lactic acid)

Education

  • Japan Advanced Institute of Science and Technology   先端科学技術大学院  

    2022.10 - 2025.12

    　 More details

    Country： Japan

    researchmap

  • Japan Advanced Institute of Science and Technology   先端科学技術大学院  

    2021.10 - 2022.9

    　 More details

    Country： Japan

    researchmap

  • Vietnam National University Ho Chi Minh City, University of Science   Faculty of Materials Science and Technology   Master of Science

    2019.12 - 2021.9

    　 More details

    Country： Viet Nam

    researchmap

  • Vietnam National University Ho Chi Minh City, University of Science   Faculty of Materials Science and Technology  

    2015.9 - 2019.10

    　 More details

    Country： Viet Nam

    Notes： Department of Polymer and Composite materials

    researchmap

Research History

  • Okayama University   Faculty of Environmental and Life Sciences, Graduate School of Science and Technology   Specially Appointed Assistant Professor

    2026.4

    　 More details

  • Japan Advanced Institute of Science and Technology   Graduate School of Advanced Science and Technology   Post-doctoral researcher

    2026.1 - 2026.3

    　 More details

    Country：Japan

    researchmap

 

Papers

  • Effect of Low‐Density Polyethylene on the Processability of a Tubular‐Blown Polypropylene Film

    Yoko Fujii, Hoang Giang Dai Vo, Takumitsu Kida, Masayuki Yamaguchi, Toshihiko Okumura

    Polymer Engineering & Science   2026.2

    　More details

    Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/pen.70255

    researchmap

  • Elucidating the effect of chain orientation on the dimensional change of a poly(lactic acid) composite containing a flexible fiber

    Hoang-Giang Dai Vo, Masayuki Yamaguchi

    Polymer   2025.8

    　More details

    Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.polymer.2025.128589

    researchmap

  • Simultaneously enhanced alginate-based hydrogel self-recovery and mechanical strength upon intramolecular nodes and nanoparticulate joints

    Yi Hsueh Chen, Masayuki Yamaguchi, Ping Huan Tsai, Hoang-Giang Dai Vo, Jing Lun Chang, Jrjeng Ruan

    International Journal of Biological Macromolecules   2025.5

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ijbiomac.2025.142056

    researchmap

  • Growth of molecular orientation during post‐process annealing of poly(lactic acid) containing a fibrous nucleating agent

    Hoang‐Giang Dai Vo, Masayuki Yamaguchi

    Journal of Applied Polymer Science   2024.4

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    <jats:title>Abstract</jats:title><jats:p>Poly(lactic acid) (PLA) is known to exhibit slow crystallization. Therefore, post‐process annealing is often performed, at which structure change is inevitable. In this paper, the structure development during annealing of PLA containing N,N′‐ethylenebis(12‐hydroxystearamide) (EBHS) is studied using extruded strands. First, EBHS, which acts as a nucleating agent, is dissolved in molten PLA, and then segregates with a fibrous shape during cooling. Next, the PLA containing EBHS is extruded, which causes EBHS fibers in the strand to orientate with the flow direction. When the strand is annealed at 100°C, amorphous PLA chains initially lose their orientation. Then, the chain orientation in the PLA strand develops because of transcrystallization from the surface of EBHS fibers that are aligned with the flow direction. As a result, the Hermans orientation function increases from 1.8 × 10<jats:sup>−3</jats:sup> (before annealing) to 6.0 × 10<jats:sup>−3</jats:sup> (after annealing). Moreover, the annealed PLA/EBHS strand shows less shrinkage (0.80 ± 0.19%) than the annealed PLA strand (2.04 ± 0.27%). The promotion of PLA chain orientation induced by the presence of aligned EBHS fibers can be used to control the structure and dimensional change of PLA products during annealing.</jats:p>

    DOI： 10.1002/app.55714

    researchmap

  • Anomalous Postprocessing Dimensional Change of Injection-Molded Products Composed of Poly(lactic acid) and Poly(vinyl alcohol)

    Masayuki Yamaguchi, Wen Shu, Takeyoshi Kimura, Hoang-Giang Dai Vo, Takumitsu Kida, Toyoichiro Mori, Makoto Kitani, Norifumi Aridome, Akira Miyamoto

    ACS Applied Polymer Materials   2023.3

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsapm.2c02155

    researchmap

  • Role of Shear Flow on Structure Development during Post-Processing Annealing for Poly(lactic acid)

    Hoang-Giang Dai Vo, Takumitsu Kida, Masayuki Yamaguchi

    Polymers   2023.1

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    <jats:p>The effect of shear history on structure development during post-processing annealing was studied using poly(lactic acid) PLA. Since PLA shows a low crystallization rate, quenched films had no crystallinity. Moreover, molecular orientation was not detected in the films. During the annealing procedure beyond its glass transition temperature, however, molecular orientation to the flow direction occurred with the crystallization growth in the films having an appropriate shear history. This peculiar crystal growth during the annealing was most probably attributed to the crystallization from extended chain crystals generated during the applied shear history, although the amount of extended chain crystals was low. The results obtained in this study should be noted because the molecular orientation proceeded due to the annealing history applied. Furthermore, this phenomenon will be used to suppress dimensional change and increase product rigidity.</jats:p>

    DOI： 10.3390/polym15030693

    researchmap

▼display all

Research Projects

  • Structure and properties of biaxially-stretching polypropylene

    2025.12 - 2026.03

    Futamura Chemical

    　 More details

  • Study on structure chracterization of long-chain branched polyethylene

    2025.12 - 2026.03

    Tosoh Chemical Corporation

    　 More details

    Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    researchmap

  • Supporting experiments related to the advancement of engineering plastic alloy components

    2024.04 - 2026.03

    Mitsubishi Chemical Corporation 

    Mitsubishi Chemical Corporation

    　 More details

  • Research on compounds for continuous intensive mixer using bioplastics

    2024.03 - 2026.03

    Tosoh Research Center (Ceramic Division)

    　 More details

    Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    researchmap

  • Investigation of the rheological properties and fiber spinning of bio-nylon materials

    Grant number：JPNP18016  2022.04 - 2023.03

    NEDO Moonshoot Project

    　 More details