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| Study on Structural Characteristics and Physical Properties of Four Types of Malvaceae Phloem Fibers in China |
| Received:April 10, 2025 Revised:May 08, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.09.003 |
| Key Words:Malvaceae phloem fibers structural characteristics mechanical properties |
| Fund Project:国家科技基础资源调查专项（2019FY100900）。 |
| Author Name | Affiliation | Postcode | | GUO Qiyu* | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | SHI Lisheng* | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640
School of Emergent Soft Matter, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | XIAO Yuying | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | ZENG Heyang | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | LI Xincai | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | WANG Yuanyuan | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | LI Hailong* | National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 |
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| Abstract:This study investigated the fiber cell wall structure and mechanical properties of four wild Malvaceae phloem fibers from China： Sterculia lanceolata Cav.， Sterculia pexa Pierre， Abelmoschus manihot var. pungens， and Triumfetta cana Blume. The results showed that all four Malvaceae phloem fibers exhibited elongated morphology with distinct transverse striations. The fiber surfaces were rough， and microfibrils displayed longitudinal corrugated fold structure. The density ranged from 1.54 to 1.63 g/cm³， crystallinity ranged from 75.26% to 79.27%， and the S2 layer microfibril angle ranged from 8° to 23°. Notably， Abelmoschus manihot var. pungens displayed a significantly higher zero-span tensile strength of 113 N/cm compared to the other three phloem fibers (23.4~54.9 N/cm)， with its strength showing a clear positive correlation with the thickness of the fiber cell wall. |
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