System to measure NIR spectra and X-ray scattering simiutaniously

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K05139
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 34020:Analytical chemistry-related
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Shinzawa Hideyuki 国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (10549893)
• Co-Investigator(Kenkyū-buntansha): 古賀 舞都 国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究員 (80733477)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 近赤外分光法 / X線散乱

Outline of Final Research Achievements

Properties of polymer samples are often influenced by molecules, polymer chain and polymer structure. It is important to obtain concatenated information from such different types of structures for in-depth understanding of the polymer system. We have developed a new system simultaneously measuring near-infrared (NIR) light absorption and X-ray scattering by polymer sample to obtain multi-scale chemical information of the object. Apparent changes in the NIR spectra and X-ray scattering property were observed when the PP sample was subjected to thermal treatment to reveal the full details of the thermal degradation of the polymer.

Free Research Field

分析化学、分光、高分子

Academic Significance and Societal Importance of the Research Achievements

近赤外線とX線を同時計測する計測技術の開発に世界で初めて成功した。加えて本技術を使用して汎用樹脂であるポリプロピレンの劣化メカニズムを詳細に解明しており、技術開発と共にポリマーの劣化評価法としてのアプリケーション事例の創出も達成した。基礎～応用に関する様々な技術の確立がなされ学術的成果だけでなく産業への応用事例まで達成されたという点で極めて重要な意義を持つと言える。