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| Characterization of Optical Properties of Five Thymelaeaceae Papermaking Plant Fibers based on PLM |
| Received:June 24, 2025 Revised:July 18, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.01.010 |
| Key Words:Thymelaeaceae papermaking fibers optical properties polarized light microscopy (PLM) sign of elongation fiber orientation |
| Fund Project:北京市社会科学基金青年学术带头人项目（24DTR077）；国家文物局文物科学技术研究项目（2023ZCK008）；北京印刷学院学科建设和研究生教育专项（21090525017）；中央高校基本科研业务费资助。 |
| Author Name | Affiliation | Postcode | | JIA Yi* | School of Printing and Packaging Engineer, Beijing Institute of Graphic Communication, Beijing, 102600 | 102600 | | GE Mengfan | School of Humanities, University of Chinese Academy of Sciences, Beijing, 100049 | 100049 | | SHI Jilong | School of Printing and Packaging Engineer, Beijing Institute of Graphic Communication, Beijing, 102600 | 102600 | | HAN Bin* | School of Humanities, University of Chinese Academy of Sciences, Beijing, 100049 | 100049 |
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| Abstract:This study utilized polarized light microscopy (PLM) to analyze the optical properties of five Thymelaeaceae papermaking plant fibers before and after pulping, including Stellera Chamaejasme, Aquilaria Sinensis, Wikstroemia Canescens, Edgeworthia Chrysantha, and Wikstroemia Delavayi. Under the cross-polarized light with and without a red plate compensator, respectively, the extinction phenomena, interference colors, sign of elongation (SE), and fiber orientation were observed and recorded, revealing the relationship between fiber structure and optical properties. The results indicated that changes of the microfibrils arrangement direction and the fibrillar angle during the pulping process influenced the extinction phenomena and interference colors of the fibers. Specially, after pulping, the five Thymelaeaceae fibers exhibited more pronounced extinction phenomena, and their interference colors generally shifted to lower orders. In contrast, the SE and fiber orientation of the fibers did not change after pulping, namely the SE of five fibers remained positive both before and after pulping, and the fiber orientation consistently exhibited a Z-twist. |
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