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| Study on the Preparation of Microcrystalline Cellulose from Moso Bamboo with Pretreatment Using Formaldehyde-assisted Acidic Deep Eutectic Solvent |
| Received:February 07, 2026 Revised:March 17, 2026 |
| DOI：10.11981/j.issn.1000-6842.2026.03.40 |
| Key Words:Moso bamboo;pretreatment;formaldehyde;deep eutectic solvent;microcrystalline cellulose |
| Fund Project:浙江省“尖兵领雁+X”科技计划项目2025C02204国家自然科学基金2220830922078306宁波市科技创新项目2022Z1012023Z142衢州科技计划项目2024K046QJ2025035浙江理工大学基本科研基金24202098-Y浙江省“尖兵领雁+X”科技计划项目（2025C02204）；国家自然科学基金（22208309，22078306）；宁波市科技创新项目（2022Z101，2023Z142）；衢州科技计划项目（2024K046，QJ2025035）；浙江理工大学基本科研基金（24202098-Y）。 |
| Author Name | Affiliation | Postcode | | Chen Zhuoyue* | 1State Key Lab of Bio-based Fiber Materials， Zhejiang Sci-Tech University， Hangzhou，Zhejiang Province， 310018 | 310018 | | Chen Tianying* | 1State Key Lab of Bio-based Fiber Materials， Zhejiang Sci-Tech University， Hangzhou，Zhejiang Province， 310018 | 310018 | | Zhang Wenbiao | 2Bamboo Industry Institute， Zhejiang A & F University，Hangzhou，Zhejiang Province， 311300 | 311300 | | Tang Yanjun | 1State Key Lab of Bio-based Fiber Materials， Zhejiang Sci-Tech University， Hangzhou，Zhejiang Province， 310018 | 310018 |
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| Abstract: |
| Using Moso bamboo as the raw material， the bamboo was pretreated with a formaldehyde-assisted choline chloride/lactic acid （ChCl/LA） deep eutectic solvent， and microcrystalline cellulose （MCC） was prepared through bleaching and acid hydrolysis processes. The results showed that under conditions of ChCl to LA molar ratio of 1∶5， pretreatment temperature of 120 ℃， and pretreatment time of 3 h， the formaldehyde-assisted ChCl/LA pretreatment prepared a solid product with a yield of 58.9%， cellulose content of 59.6%， hemicellulose removal rate of 62.0%， and lignin removal rate of 69.9%. the pulp obtained after further bleaching had a cellulose content as high as 92.3%. The MCC prepared after acid hydrolysis retained the Type I crystalline structure of cellulose， with a yield of 84.8%， cellulose polymerization degree of 148， and crystallinity index as high as 73.2%， and exhibited good dispersion stability and thermal stability， its absolute value of Zeta potential was close to 25 mV. |
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