郑小彬,林凯睿,黄六莲,倪永浩,袁之润,李建国,陈礼辉.2-乙基蒽醌辅助置换蒸煮对慈竹深度脱木质素的影响研究[J].中国造纸,2026,45(10):9-16 本文二维码信息
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2-乙基蒽醌辅助置换蒸煮对慈竹深度脱木质素的影响研究
Effects of 2-ethylanthraquinone-assisted Displacement Cooking on Deep Delignification of Bambusa Emeiensis
收稿日期:2026-05-09  修订日期:2026-05-25
DOI:10.11980/j.issn.0254-508X.2026.10.002
关键词:  慈竹  2-乙基蒽醌  置换蒸煮  深度脱木质素
Key Words:Bambusa emeiensis  2-ethylanthraquinone  displacement cooking  deep delignification
基金项目:国家重点研发计划 2023YFD2201903宜宾市竹产业重大攻关项目 YBZD202401国家重点研发计划(2023YFD2201903);宜宾市竹产业重大攻关项目(YBZD202401)。
作者单位邮编
郑小彬* 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
林凯睿 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
黄六莲 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
倪永浩 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
袁之润 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
李建国* 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
陈礼辉* 福建农林大学材料工程学院,植物纤维功能材料国家林业和草原局重点实验室, 福建福州,350108 350108
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摘要:本研究以慈竹为原料,探究2-乙基蒽醌(2-EAQ)辅助置换蒸煮对慈竹脱木质素及浆料性能的影响。通过改变2-EAQ添加量,并进一步调节其在温黑液浸渍段和蒸煮段中的分配比例,分析慈竹浆得率、卡伯值及黑液木质素结构变化。结果表明,适量添加2-EAQ能够促进木质素脱除,降低慈竹浆卡伯值,在一定程度上减少碳水化合物损失。当2-EAQ添加量为0.1%(相对于慈竹片绝干质量)时,慈竹浆卡伯值由未添加2-EAQ的23.6降至20.6,得率由49.4%略微提高至50.4%。在此基础上,将2-EAQ按50%∶50%分段添加至温黑液浸渍段与蒸煮段时,慈竹浆卡伯值进一步降至19.4,实现木质素的深度脱除,黑液提取木质素分子质量明显降低,且得率为50.2%,说明该添加方式有利于提高脱木质素选择性。
Abstract:This study used Bambusa emeiensis as the raw material to investigate the effects of 2-ethylanthraquinone (2-EAQ)-assisted displacement cooking on delignification and pulp properties. By varying the addition amount of 2-EAQ and further adjusting its distribution ratio between the warm black liquor impregnation stage and the cooking stage, changes in pulp yield, Kappa value, and the lignin structure in black liquor were analyzed. The results showed that an appropriate addition amount of 2-EAQ promoted lignin removal, reduced the Kappa value of Bambusa emeiensis pulp, and decreased carbohydrate loss. When the 2-EAQ addition amount was 0.1% (compared to the dry weight of Bambusa emeiensis slices), the Kappa value of the Bambusa emeiensis pulp decreased from 23.6 without 2-EAQ addition to 20.6, while the pulp yield slightly increased from 49.4% to 50.4%. On this basis, when 2-EAQ was added separately to the warm black liquor impregnation stage and the cooking stage at a ratio of 50%∶50%, the Kappa value of the Bambusa emeiensis pulp further decreased to 19.4, indicating deep delignification. Meanwhile, the molecular weight of lignin extracted from the black liquor was significantly reduced, while the pulp yield remained at 50.2%, indicating that this addition strategy improved delignification selectivity.
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