| 赵家祥,张媛媛,钟慈,唐艳军,李飞云.磺酸季铵化纤维素纳米纤丝的酶法制备及其长径比调控工艺研究[J].中国造纸学报,2026,41(3):50-56 |
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| 磺酸季铵化纤维素纳米纤丝的酶法制备及其长径比调控工艺研究 |
| Enzymatic Preparation of Sulfobetaine Modified Cellulose Nanofibrils and Their Aspect Ratio Regulation Process |
| 投稿时间：2026-03-26 修订日期：2026-05-10 |
| DOI：10.11981/j.issn.1000-6842.2026.03.50 |
| 中文关键词: 纤维素纳米纤丝 磺酸甜菜碱 纤维素酶 长径比 Pickering乳液 |
| Key Words:cellulose nanofibrils sulfobetaine cellulase aspect ratio Pickering emulsion |
| 基金项目: |
| 作者 | 单位 | 邮编 | | 赵家祥* | 浙江理工大学生物基纤维材料全国重点实验室,浙江杭州,310018 | 310018 | | 张媛媛 | 浙江理工大学生物基纤维材料全国重点实验室,浙江杭州,310018 | 310018 | | 钟慈 | 浙江理工大学生物基纤维材料全国重点实验室,浙江杭州,310018 | 310018 | | 唐艳军 | 浙江理工大学生物基纤维材料全国重点实验室,浙江杭州,310018 | 310018 | | 李飞云* | 浙江理工大学生物基纤维材料全国重点实验室,浙江杭州,310018 | 310018 |
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| 中文摘要: |
| 本研究以磺酸甜菜碱（SB）接枝改性微晶纤维素（MCC-SB）为原料，利用纤维素酶高效制备磺酸季铵化改性纤维素纳米纤丝（CNF-SB），通过改变SB添加量实现CNF-SB长径比的调控，并考察了CNF-SB在正十六烷烃/水构成的水包油（O/W）型Pickering乳液中的乳化性能。结果表明，MCC与SB质量比1∶3、反应温度50 ℃、pH值=5、酶用量0.6 mg时制备的CNF-SB-3产率最高（48.6%），长径比为60；增加SB添加量至MCC与SB质量比1∶5，制得CNF-SB-5长径比为83。此外，在pH值=7、固含量0.5%、静置时间3天、乳化指数100%的条件下，CNF-SB-3在水包油型Pickering乳液中的粒径主要分布在12~18 μm，呈现优异的乳化性能。 |
| Abstract: |
| In this study， microcrystalline cellulose （MCC-SB） modified by sulfobetaine （SB） was used to efficiently prepare sulfonate quaternized cellulose nanofibrils （CNF-SB） using cellulose enzyme. The aspect ratio of CNF-SB was controlled by varying SB dosage， and their emulsifying performances in an oil-in-water （O/W） Pickering emulsion composed of n-hexadecane/water were investigated. The results showed that when the MCC to SB mass ratio was 1∶3， the reaction temperature was 50 ℃， the pH value was 5， and the enzyme dosage was 0.6 mg， CNF-SB-3 was obtained with the highest yield of 48.6% and an aspect ratio of 60. Increasing the SB dosage to a mass ratio of MCC to SB mass ratio was 1∶5， the aspect ratio of CNF-SB-5 was 83. Furthermore， under conditions of pH value of 7， solid content of 0.5%， standing time of 3 d， and emulsification index of 100%， CNF-SB-3 in oil in water type Pickering emulsions mainly exhibited a particle size distribution range of 12~18 μm， demonstrating excellent emulsification performance. |
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