【公開日：2024.07.25】【最終更新日：2024.06.12】

課題データ / Project Data

課題番号 / Project Issue Number

23CT0202

利用課題名 / Title

マイクロプラスチックの研究

利用した実施機関 / Support Institute

公立千歳科学技術大学 / Chitose IST

機関外・機関内の利用 / External or Internal Use

内部利用（ARIM事業参画者）/Internal Use (by ARIM members)

技術領域 / Technology Area

【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-

【重要技術領域 / Important Technology Area】（主 / Main）次世代バイオマテリアル/Next-generation biomaterials（副 / Sub）-

キーワード / Keywords

高分子系生体材料, プラスチック類,電子顕微鏡/ Electronic microscope,生分解性材料/ Biodegradable material,赤外・可視・紫外分光/ Infrared/visible/ultraviolet spectroscopy

利用者と利用形態 / User and Support Type

利用者名（課題申請者）/ User Name (Project Applicant)

Karthaus Olaf

所属名 / Affiliation

公立千歳科学技術大学理工学部応用化学生物学科

共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes

ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes

利用形態 / Support Type

（主 / Main）機器利用/Equipment Utilization（副 / Sub）-

利用した主な設備 / Equipment Used in This Project

CT-010：走査型電子顕微鏡（SEM）
CT-002：フーリエ変換赤外分光光度計（FTIR)/赤外顕微鏡

報告書データ / Report

概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)

We investigated the degradation of plastic materials that were collected from rivers, lakes and the ocean in Hokkaido and other sites in Japan. We analyzed the samples by electron microscopy and infrared spectroscopy to assess the degree of degradation.

実験 / Experimental

Samples were left in the state as they were found. SEM imaging and EDS mapping was used to assess the state of the plastic material.FT-IR spectrscopy was performed in the ATR mode in reflection, using a diamond window.

結果と考察 / Results and Discussion

Plastics are found in various states of degradation, depending on the type of plastic and the duration of being in the environment.The figures show a polystyrene sample that was found half burried in soil. The non-burried part was discolored and yellow. It showed deep cracks. The FT-IR showed strong oxidation, as compared to the burried part that had not been exposed to sunlight.

図・表・数式 / Figures, Tables and Equations

Photograph and optical micrograph of a polystyrene sample (more than one year in the environment).

Electron micrograph of the sample in Fig. 1.

FT-IR (ATR mode) of part of the sample exposed to sunlight (top) and buried in the ground (bottom).

その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)

成果発表・成果利用 / Publication and Patents

論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)

口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.

特許 / Patents

特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件