| 王琼,吴晓亮,纪斯怡,吕源财,叶晓霞,刘以凡,林春香,刘明华.有机酸水解制备甘蔗渣纤维素纳米晶体及其性能研究[J].中国造纸学报,2026,41(1):8-17 |
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| 有机酸水解制备甘蔗渣纤维素纳米晶体及其性能研究 |
| Preparation and Properties of Sugarcane Bagasse Cellulose Nanocrystal by Organic Acid Hydrolysis |
| 投稿时间：2025-02-17 修订日期：2025-03-06 |
| DOI：10.11981/j.issn.1000-6842.2026.01.08 |
| 中文关键词: 甘蔗渣 预处理 有机酸 纤维素纳米晶体 手性向列液晶 |
| Key Words:sugarcane bagasse pretreatment organic acid cellulose nanocrystal chiral nematic liquid crystal |
| 基金项目:国家自然科学基金（22208057）；中央引导地方科技发展资金项目（2024L3001）。 |
| 作者 | 单位 | 邮编 | | 王琼* | 1福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 吴晓亮 | 1福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 纪斯怡 | 2中国矿业大学（北京）化学与环境工程学院, 北京,100083 | 100083 | | 吕源财 | 1福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 叶晓霞 | 1福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 刘以凡 | 1福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 林春香* | 1福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 刘明华* | 1福州大学环境与安全工程学院,福建福州,350108
3莆田学院,福建莆田,351100 | 351100 |
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| 中文摘要: |
| 本研究以甘蔗渣为原料，采用对甲苯磺酸-碱-漂白预处理的方法，获得甘蔗渣纤维素（TSA-SCB），再用草酸水解制得甘蔗渣纤维素纳米晶体（SCB-CNC），探讨了TSA-SCB与SCB-CNC的最佳制备工艺条件。结果表明，在对甲苯磺酸溶液质量分数65%、反应温度80 ℃、反应时间20 min时，预处理可高效去除甘蔗渣中的木质素与半纤维素，制得TSA-SCB纯度较高；当草酸溶液质量分数90%、水解温度110 ℃、水解时间3 h时，制得SCB-CNC得率为29.8%，Zeta电位为-32.65 mV，悬浮液稳定性优异。对SCB-CNC理化性质进行表征可得，SCB-CNC呈棒状，平均长度、平均宽度分别约468、39 nm，其表面成功引入了羧基官能团，并保持纤维素I型结晶结构，且SCB-CNC悬浮液可在一定浓度下自组装形成手性向列液晶相。 |
| Abstract: |
| This study utilized sugarcane bagasse as raw material， employed a pretreatment method combining p-toluenesulfonic acid-alkali-bleach to obtain sugarcane bagasse cellulose (TSA-SCB). Subsequently， oxalic acid hydrolysis was applied to produce sugarcane bagasse cellulose nanocrystal (SCB-CNC). The optimum preparation conditions of both TSA-SCB and SCB-CNC were investigated. The results showed that lignin and hemicellulose from SCB were efficiently removed， and the prepared TSA-SCB had a high purity， when the p-toluenesulfonic acid solution concentration was 65%， reaction temperature was 80 ℃， and reaction time was 20 min. Under the conditions of oxalic acid solution concentration of 90%， hydrolysis temperature of 110 ℃， and hydrolysis time of 3 h， SCB-CNC had a yield of 29.8% with the Zeta potential of -32.65 mV and excellent stability of suspension. The physicochemical properties of SCB-CNC were characterized， the results indicated that SCB-CNC exhibited rod-shaped with an average length and average width of about 468 and 39 nm， respectively， and it was successfully introduced carboxyl groups onto surface of SCB-CNC while retaining the crystalline structure of cellulose type I. Furthermore， SCB-CNC suspensions could self-assemble into a chiral nematic liquid crystal phase at a certain concentration. |
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