Development of evaluation techniques for plastic degradation based on Raman spectroscopy

• Project/Area Number: 15K05589
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Green/Environmental chemistry
• Research Institution: Kindai University
• Principal Investigator: KAWAZUMI Hirofumi 近畿大学, 産業理工学部, 教授 (10150517)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: プラスチック識別 / プラスチック劣化 / ラマン分光法 / 表面増強ラマン / 銀ナノ粒子 / サポートベクターマシン / 主成分分析 / プラスチックリサイクル / マテリアルリサイクル / 促進暴露試験 / 多変量スペクトル解析 / 酸化誘導時間

Outline of Final Research Achievements

This project is aiming the development of evaluation techniques for components and the degree of deterioration of plastics to sort and collect waste plastics in online real-time which are important recycling resources. An experimental apparatus of Raman spectroscopy was manufactured with simple operation and high acquisition rate and the accelerated exposure pieces were prepared as a standard degradation sample in the first stage. We have found useful correlation　between some peak intensities in the plastic Raman spectra and the degree of deterioration of plastics. In order to improve the degradation evaluation, we have also technologically developed a signal gaining method based surface-enhanced Raman scattering (SERS) with silver nanoparticles and a numerical data analysis method with support vector machine (SVM) of pattern recognition for the Raman spectra.

Research Products

• [Presentation] 平板銀ナノ粒子を用いる表面増強ラマン散乱基板 (2018)
  • Author(s): 河済博文，坂北一徳、竹田直弘、，伊東謙吾
  • Organizer: ナノ学会第16回大会
• [Presentation] Identification of Transparent Plastic in milliseconds using Raman Spectroscopy (2017)
  • Author(s): Wilem Musu, Akihiro Tsuchida, Hirofumi Kawazumi and Nobuto Oka
  • Organizer: 10th International Symposium on Transparent Oxide and Related Materials for Electronics and Optics (TOEO10)
  • Int'l Joint Research
• [Presentation] Plastic Recycling of End-of-Life Vehicle Using Combination of Raman Spectroscopy and Data Mining Techniques (2017)
  • Author(s): Wilem Musu, Akihiro Tsuchida, Hirofumi Kawazumi and Nobuto Oka
  • Organizer: Indonesian Students Association Scientific Conference (ISASC-2017)
  • Int'l Joint Research
• [Presentation] Application of Silver Nanoplates for SERS (2016)
  • Author(s): N. Takeda, H. Kawazumi
  • Organizer: NFO-14
  • Place of Presentation: アクトシティ浜松（浜松市）
  • Year and Date: 2016-09-04
  • Int'l Joint Research
• [Presentation] 家電・自動車リサイクル法での最終残渣プラスチックのマテリアルリサイクル (2016)
  • Author(s): 土田保雄、河済博文
  • Organizer: プラスチックリサイクル化学研究会第19回研究討論会
  • Place of Presentation: 九州工業大学（北九州市）
  • Year and Date: 2016-09-01
  • Invited
• [Presentation] ナノ粒子を利用したプラスチックからの表面増強ラマン (2016)
  • Author(s): 河済博文、 鵜飼佑基
  • Organizer: 日本分析化学会 第76回分析化学討論会
  • Place of Presentation: 岐阜薬科大学・岐阜大学（岐阜市）
  • Year and Date: 2016-05-28
• [Presentation] 廃プラスチックリサイクルで黒色プラスチックを識別するためのラマン分光装置の開発 (2016)
  • Author(s): 河済博文、土田哲大、吉田智弥、土田保雄
  • Organizer: 日本分析化学会第75回分析化学討論会
  • Place of Presentation: 岐阜大学・岐阜薬科大学（ 岐阜市 ）
  • Year and Date: 2016-05-28