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| Study on Fiber Morphology and Physicochemical Properties of Four Pinaceae Wood Species |
| Received:June 29, 2025 Revised:August 01, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.11.006 |
| Key Words:pinaceae wood fibrous morphology biological structure physical and chemical properties |
| Fund Project:国家科技基础资源调查专项（2019FY100900）。 |
| Author Name | Affiliation | Postcode | | CHEN Siyao* | National Engineering Research Center for Paper Making and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | XIAO Yuying | National Engineering Research Center for Paper Making and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | CHU Shengze | National Engineering Research Center for Paper Making and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | REN Junli | School of Light Industry Science and Engineering, State Key Lab of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | LI Sainan | College of Life Sciences, Zhaoqing University, Zhaoqing, Guangdong Province, 526061 | 526061 | | LIANG Guohua | College of Life Sciences, Zhaoqing University, Zhaoqing, Guangdong Province, 526061 | 526061 | | LIU Ying* | National Engineering Research Center for Paper Making and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 |
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| Abstract:This study systematically investigated the biological structure， fiber morphology， and physicochemical properties of four representative Pinaceae species： Pinus sylvestris， Pinus koraiensis， Larix gmelinii， and Pinus yunnanensis. The results demonstrated that the length-weighted values of these four Pinaceae fibers ranged from 1.73 to 2.07 mm. Larix gmelinii exhibited the most pronounced difference in cell wall-to-lumen ratio between earlywood (0.15) and latewood (1.15). The cellulose and hemicellulose contents of the raw materials ranged from 34.90% to 38.62% and 16.85% to 27.05%， respectively， with Pinus sylvestris displaying the highest values for both cellulose (38.42%) and hemicellulose (27.05%). Lignin content showed limited variation， distributing between 23.75% and 26.41%. Notably， the ash content of Pinus yunnanensis (1.39%) was significantly higher than that of the other three species (0.27%~0.33%). The density of the four Pinaceae fibers ranged from 1.33 to 1.63 g/cm³， while crystallinity fell within 75.34%~77.41%. The pyrolytic energy distribution spanned 137.2~178.5 kJ/mol. The zero-span tensile index under dry conditions ranged from 158 to 198 N·m/g， with Pinus koraiensis exhibiting the highest value (198 N·m/g). |
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