Updated on 2026/06/11

写真a

 
Okamura Haruyuki
 
Organization
Graduate School of Engineering Division of Science and Engineering for Materials, Chemistry and Biology Associate Professor
School of Engineering Department of Applied Chemistry
Title
Associate Professor
Affiliation
Institute of Engineering
Affiliation campus
Nakamozu Campus

Position

  • Graduate School of Engineering Division of Science and Engineering for Materials, Chemistry and Biology 

    Associate Professor  2022.04 - Now

  • School of Engineering Department of Applied Chemistry 

    Associate Professor  2022.04 - Now

Degree

  • 博士（工学） （ Others ） (   Kyoto Univ. )

Research Areas

  • Environmental Science/Agriculture Science / Environmental materials and recycle technology  / Recycle Chemistry

  • Nanotechnology/Materials / Polymer materials  / Polymer Materials

  • Nanotechnology/Materials / Polymer chemistry  / Polymer Chemistry

  • Nanotechnology/Materials / Organic functional materials

Research Career

  • Reworkable Resin with Photosensitivity

Professional Memberships

  • フォトポリマー懇話会

    2014.04 - Now   Domestic

  • RadTech Japan

    2013.12 - Now   Domestic

  • Society of the photopolymer science and technology

    2013.04 - Now   Domestic

  • 日本化学会

    2012.01 - Now   Domestic

  • 接着学会

    2007.04 - Now   Domestic

  • 近畿化学協会

    1999.04 - Now   Domestic

  • 高分子学会

    1994.04 - Now   Domestic

  • 接着学会

  • 近畿化学協会

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Papers

  • Ultrasound-Assisted Degradation of Stimuli-Sensitive Polymers which Generate Bubbles using TiO2 and Photoacid Generators: Properties and Reaction Mechanism Reviewed

    Okamura Haruyuki, Oshima Keisuke, Ohno Kohji

    Journal of Photopolymer Science and Technology   38 ( 5 )   383 - 388   2025.12（ ISSN:09149244 ） （ eISSN:13496336 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    <p>Poly(<i>tert</i>-butyl methacrylate) (PtBMA) and poly(1-methyl-1-(6-methyl-7-oxabicyclo[4.1.0]hept-3-yl)ethyl methacrylate)  (PMOBH), a type of degradable polymers, which generate gaseous or volatile compounds, such as isobutene and limonene, were decomposed after ultrasound-irradiation and subsequent heating in the presence of titanium oxide (TiO<sub>2</sub>) and a photoacid generator (PAG).  The decomposition behaviors of PtBMA or PMOBH containing TiO<sub>2</sub> and PAG were investigated and discussed in terms of the chemical structures of the polymers and reaction mechanism.  We believe that the degradation contributes to reduce environmental impact such as the easy recycling of composite materials.</p>

    DOI： 10.2494/photopolymer.38.383

    CiNii Research

  • Photocured Blended Films of Diarylfluorene having Naphthalene Moieties and TiO<sub>2</sub> with High Refractive Indices

    Okamura Haruyuki, Minokami Keiko, Miyauchi Shinsuke

    Journal of Photopolymer Science and Technology   38 ( 1 )   35 - 39   2025.06（ ISSN:09149244 ） （ eISSN:13496336 ）

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    <p>We developed photocured films from a blend of TiO<sub>2</sub> and dinaphthylfluorene derivatives having acryl and naphthalene groups and photoinitiators with high refractive indices.  The curing properties of the blends were strongly affected by the irradiation conditions.  We successfully fabricated films with high refractive indices (1.767 at 589 nm) and a high thermal stability (5% weight loss temperature: 265 <sup>o</sup>C).</p>

    DOI： 10.2494/photopolymer.38.35

    CiNii Research

  • Ultrasound-Assisted Degradation of Poly(<i>p</i>-<i>tert</i>-butoxycarbonyloxystyrene) using TiO<sub>2</sub> and Photoacid Generators

    Okamura Haruyuki, Oshima Keisuke, Ohno Kohji

    Journal of Photopolymer Science and Technology   37 ( 5 )   541 - 544   2024.06（ ISSN:09149244 ） （ eISSN:13496336 ）

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    <p>Poly(<i>p</i>-<i>tert</i>-butoxycarbonyloxystyrene) (PBOCS), a type of degradable polymer, which generates gaseous compounds, such as carbon dioxide and isobutene, was decomposed after ultrasound-irradiation and subsequent heating in the presence of titanium oxide (TiO<sub>2</sub>) and photoacid generators (PAGs). The decomposition behaviors of PBCOS containing TiO<sub>2</sub> and PAG were investigated and discussed in terms of the chemical structures of the PAGs. Ultrasound-assisted degradation of the PAG was investigated by UV-vis spectroscopy. We believe that the degradation contributes to the easy recycling of composite materials.</p>

    DOI： 10.2494/photopolymer.37.541

    CiNii Research

  • Degradation of Modified Polystyrenes Having Degradable Units by Near Infrared Light Irradiation in The Presence of A Photon Upconversion Nanoparticle and A Photoacid Generator

    Okamura Haruyuki, Mihono Kiwa

    Journal of Photopolymer Science and Technology   37 ( 2 )   205 - 208   2024.06（ ISSN:09149244 ） （ eISSN:13496336 ）

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    <p>The degradation of modified polystyrenes having tertiary ether linkages or carbonate linkages were carried out by near infrared light (NIR) irradiation and subsequent heating. The polymer films containing a photoacid generator and a photon upconversion nanoparticle (UCNP) were decomposed to form isobutene and/or carbon dioxide by the NIR irradiation and subsequent heating. The thermal decomposition mechanism of the polymers assisted by NIR irradiation was investigated and discussed in terms of the irradiation and thermolysis conditions. Photolysis of the photoacid generator by NIR irradiation was investigated by UV-vis spectroscopy. We believe that the degradation by the NIR and subsequent heating contributes to the easy recycling of composite materials.</p>

    DOI： 10.2494/photopolymer.37.205

    CiNii Research

  • Enhancing the Delamination Efficiency of Polyimide-Copper Bilayers with UV/Heat-Activated Foamable Adhesive: Insights and Applications

    Khawdas W.

    ACS Applied Materials and Interfaces   16 ( 24 )   31788 - 31797   2024.06（ ISSN:19448244 ）

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  • Degradation of modified polystyrenes having degradable units by near-infrared light irradiation

    Okamura H.

    Applied Research   3 ( 3 )   2024.06

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  • Secondary Patternable UV-Imprinted Reworkable Resin by Additional Photoirradiation Reviewed

    Haruyuki Okamura and Hideki Tachi

    J. Photopolym. Sci. Technol. 雑誌   32 ( 2 )   237 - 242   2019.06

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    Kind of work：Joint Work  

  • Analysis of Network Structures in Thiol-Ene UV Curing System Using Reworkable Resins Reviewed

    H. Okamura, K. Nakata, and M. Yamagaki

    Polymers 雑誌   11 ( 1 )   2019.01

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    Kind of work：Joint Work  

  • Rheological Studies of Reworkable Photocuring Resins Reviewed

    H. Okamura and H. Tachi

    J. Photopolym. Sci. Technol. 雑誌   31 ( 6 )   727 - 733   2018.12

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    Kind of work：Joint Work  

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Books and Other Publications

  • 光機能性有機・高分子材料における新たな息吹

    岡村晴之（ Role： Joint author）

    シーエムシー出版  2019.04 

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    Responsible for pages：304-309  

  • 最新フォトレジスト材料開発とプロセス最適化技術

    岡村晴之（ Role： Joint author）

    シーエムシー出版  2017.09 

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    Responsible for pages：67-72  

  • ベーシックマスター　高分子化学

    岡村晴之、白井正充（ Role： Joint author）

    オーム社  2011.03 

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    Responsible for pages：171-184  

  • polymer durability and radiation effects

    H. Okamura, A. Kawaue, M. Shirai（ Role： Joint author）

    American Chemical Society, Washington, DC  2007.11 

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    Responsible for pages：317-326  

Presentations

  • Dual Stimuli-Sensitive Polymers which Generate Bubbles - Toward Reducing Environmental Impact International conference

    Haruyuki Okamura

    Pacifichem2025  2025.12 

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    Presentation type：Oral presentation (general)  

  • Photo-thermal Degradation of Stimuli-Sensitive Polymers with Epoxy and Tertiary Ester Moieties International conference

    K. Matsuyama, H. Okamura

    Materials Research Meeting 2025 (MRM2025)  2025.12 

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    Presentation type：Poster presentation  

  • Degradation of Dual-Stimuli Sensitive Polymers Generating Bubbles Containing Titanium Oxide and Photoacid Generators by Ultrasound Irradiation and Heating International conference

    K. Oshima, K. Ohno, H. Okamura

    Materials Research Meeting 2025 (MRM2025)  2025.12 

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    Presentation type：Poster presentation  

  • Development of Easy Peel Technology for Laminated Packaging Films by Interfacial Application of Stimulated Foam Polymer International coauthorship International conference

    K. Miyata, S. Kobayashi, W. Khawdasa, H. Okamura, H. Ito, K. Taki

    Materials Research Meeting 2025 (MRM2025)  2025.12 

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    Presentation type：Oral presentation (general)  

  • Dual Stimuli-Sensitive Polymers which Generate Bubbles - Toward Reducing Environmental Impact International conference

    Haruyuki Okamura

    Materials Research Meeting 2025 (MRM2025)  2025.12 

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    Presentation type：Oral presentation (general)  

  • Joint Decoupling in Insert-Molded Multi-Materials through UV-Activated Foaming Polymers for Sustainable Recycling International coauthorship International conference

    W. Khawdas, R. Ono, K. Miyata, H. Okamura, K. Taki, H. Ito

    Materials Research Meeting 2025 (MRM2025)  2025.12 

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    Presentation type：Oral presentation (general)  

  • Dual Stimuli-Sensitive Polymers which Generate Bubbles - Toward Reducing Environmental Impact International conference

    Haruyuki Okamura

    World Summit and Expo on Polymers and Composit Materials (WSEPCM-2025)  2025.10 

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    Presentation type：Oral presentation (general)  

  • UV-Induced Foaming for Joint Separation of Insert-Injected Polymer/Aluminum in Recycling Applications International coauthorship International conference

    Wichean Khawdas, Rio Ono, Ken Miyata, Haruyuki Okamura, Kentaro Taki, Hiroshi Ito

    PPS2025  2025.09 

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    Presentation type：Oral presentation (general)  

  • ナフタレン部位を有するジアリルフルオレンとTiO2の高屈折率光架橋ブレンド膜　 Domestic conference

    岡村晴之、三ノ上渓子、宮内信輔

    第74回高分子討論会  2025.09 

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    Presentation type：Oral presentation (general)  

  • 酸化チタンと光酸発生剤を用いた刺激発泡型高分子の超音波照射と加熱による分解 Domestic conference

    大嶋啓介、岡村晴之、大野工司

    第74回高分子討論会  2025.09 

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    Presentation type：Poster presentation  

  • エポキシ部位及び第三級エステル部位を有する刺激発泡型高分子の光・熱分解 Domestic conference

    松山慶悟、岡村晴之

    第74回高分子討論会  2025.09 

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    Presentation type：Poster presentation  

  • Photocured Blended Films of Diarylfluorene having Naphthalene Moieties and TiO2 with High Refractive Indices

    Haruyuki Okamura, Keiko Minokami, Shinsuke Miyauchi

    2025.06 

  • Disassembly of Metal/Plastic Components Using UV-Induced Foaming Polymers International coauthorship International conference

    Wichean Khawdas, Okuda Ryotaro, Ken Miyata, Haruyuki Okamura, Kentaro Taki, Hiroshi Ito

    16th Eco-Energy and Materials Science and Engineering Symposium (EMSES2025)  2025.01 

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    Presentation type：Poster presentation  

  • TiO2と光酸発生剤を用いたポリ(p-tert-ブトキシスチレンの超音波照射と加熱による分解 Domestic conference

    大嶋啓介、岡村晴之、大野工司

    第73回高分子討論会  2024.09 

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    Presentation type：Oral presentation (general)  

  • Degradation of Modified Polystyrenes Having Degradable Units by Near Infrared Light Irradiation in The Presence of A Photon Upconversion Nanoparticle and A Photoacid Generator

    Haruyuki Okamura, Kiwa Mihono

    2024.06 

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    Presentation type：Oral presentation (general)  

  • Photo-thermal Dual Cured Blends of TiO2/diarylfluorene Films with High Refractive Indices International conference

    Haruyuki Okamura, Keiko Minokami, Hirotsugu Kuratani, Shinsuke Miyauchi

    8th European Symposium of Photopolymer Science (ESPS2024)  2024.06 

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    Presentation type：Oral presentation (general)  

  • Degradation of Modified Polystyrenes Having Degradable Units by Near Infrared Light Irradiation International conference

    H. Okamura and K. Mihono

    8th European Symposium of Photopolymer Science (ESPS2024)  2024.06 

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    Presentation type：Poster presentation  

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Charge of on-campus class subject

  • 応用化学実験1

    2025   Weekly class   Undergraduate

  • 応用化学実験3

    2025   Weekly class   Undergraduate

  • 応用化学卒業研究B

    2025   Intensive lecture   Undergraduate

  • 有機化学演習1

    2025   Weekly class   Undergraduate

  • 応用化学総合演習

    2025   Weekly class   Undergraduate

  • 高分子材料化学

    2025   Weekly class   Undergraduate

  • 応用化学実験II

    2025   Intensive lecture   Undergraduate

  • 応用化学実験IV

    2025   Weekly class   Undergraduate

  • 応用化学実験V

    2025   Weekly class   Undergraduate

  • 物質化学生命系特別演習第2

    2025   Intensive lecture   Graduate school

  • 物質化学生命系特別研究第2

    2025   Intensive lecture   Graduate school

  • 物質化学生命系特別研究

    2025   Intensive lecture   Graduate school

  • 応用化学特論3

    2025   Weekly class   Graduate school

  • 応用化学実験III

    2025   Intensive lecture   Undergraduate

  • 物質化学生命系特別演習

    2025   Intensive lecture   Graduate school

  • 初年次ゼミナール

    2025   Weekly class   Undergraduate

  • 物質化学生命系特別演習第1

    2025   Intensive lecture   Graduate school

  • 物質化学生命系特別研究第1

    2025   Intensive lecture   Graduate school

  • 高分子合成化学特論

    2025   Weekly class   Graduate school

  • 応用化学概論

    2025   Weekly class   Undergraduate

  • 応用化学実験2

    2025   Weekly class   Undergraduate

  • 応用化学卒業研究A

    2025   Intensive lecture   Undergraduate

  • 物質化学生命系特別研究

    2024   Intensive lecture   Graduate school

  • 応用化学実験II

    2024   Intensive lecture   Undergraduate

  • 応用化学実験IV

    2024   Weekly class   Undergraduate

  • 応用化学実験V

    2024   Weekly class   Undergraduate

  • 物質化学生命系特別演習第2

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別研究第2

    2024   Intensive lecture   Graduate school

  • 応用化学特論3

    2024   Weekly class   Graduate school

  • 応用化学実験1

    2024   Weekly class   Undergraduate

  • 応用化学実験3

    2024   Weekly class   Undergraduate

  • 有機化学演習1

    2024   Weekly class   Undergraduate

  • 応用化学総合演習

    2024   Weekly class   Undergraduate

  • 高分子材料化学

    2024   Weekly class   Undergraduate

  • 応用化学実験III

    2024   Intensive lecture   Undergraduate

  • 物質化学生命系特別演習

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第1

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別研究第1

    2024   Intensive lecture   Graduate school

  • 高分子合成化学特論

    2024   Weekly class   Graduate school

  • 応用化学概論

    2024   Weekly class   Undergraduate

  • 応用化学実験2

    2024   Weekly class   Undergraduate

  • Advanced Applied Chemistry III

    2021    

  • Laboratory Exercises for Applied Chemistry II

    2021   Practical Training  

  • Laboratory Exercises for Applied Chemistry I

    2021   Practical Training  

  • Laboratory Exercises for Applied Chemistry V

    2021   Practical Training  

  • Laboratory Exercises for Applied Chemistry III

    2021   Practical Training  

  • First Year Seminar

    2021    

  • Laboratory Exercises for Applied Chemistry IV

    2021   Practical Training  

  • Advanced Polymer Syntheses

    2021    

  • Exercises in Organic Chemistry IA

    2021    

  • Polymer Materials Chemistry

    2021    

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