赵嘉巍,吴泽天,程博闻,杨硕.预水解-硫酸盐法制备高聚合度阔叶木溶解浆工艺的研究[J].中国造纸,2026,45(10):1-8 本文二维码信息
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预水解-硫酸盐法制备高聚合度阔叶木溶解浆工艺的研究
Research on the Preparation of High Polymerization Degree Dissolving Pulp Using Prehydrolysis-kraft Pulping Treatment
收稿日期:2026-01-02  修订日期:2026-02-02
DOI:10.11980/j.issn.0254-508X.2026.10.001
关键词:  预水解-硫酸盐法制浆  ECF漂白  聚合度  溶解浆
Key Words:prehydrolysis-kraft pulping process  ECF bleaching  degree of polymerization  dissolving pulp
基金项目:国家自然科学基金 22208247天津市科技重大专项与工程 25ZXZSSS00800天津市自然科学基金 24JCQNJC00330国家自然科学基金(No.22208247);天津市科技重大专项与工程(25ZXZSSS00800);天津市自然科学基金(24JCQNJC00330)。
作者单位邮编
赵嘉巍* 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室, 中国轻工业造纸与生物质精炼重点实验室,纺织行业高性能纤维湿法非织造材料 重点实验室,天津,300457 300457
吴泽天 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室, 中国轻工业造纸与生物质精炼重点实验室,纺织行业高性能纤维湿法非织造材料 重点实验室,天津,300457 300457
程博闻 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室, 中国轻工业造纸与生物质精炼重点实验室,纺织行业高性能纤维湿法非织造材料 重点实验室,天津,300457 300457
杨硕* 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室, 中国轻工业造纸与生物质精炼重点实验室,纺织行业高性能纤维湿法非织造材料 重点实验室,天津,300457 300457
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摘要:本研究以相思木为原料,采用预水解硫酸盐法结合无元素氯(ECF)漂白技术制备高聚合度溶解浆,研究相思木浆在蒸煮漂白中的聚合度与木质素含量的变化规律,探究了不同工艺条件对溶解浆组分和特性的影响。结果表明,在预水解硫酸盐法蒸煮过程中,当蒸煮温度160 ℃、保温时间60 min、用碱量(以NaOH)15%、硫化度(以Na2S计)30%时,制得的未漂浆卡伯值为23.1,聚合度为1 684;通过三段ECF漂白后,总木质素含量降至0.86%,结合冷碱抽提对纸浆进行纯化,制得α-纤维素93.94%,半纤维素4.71%,平均聚合度达1 393的高品质溶解浆。
Abstract:This study employed Acacia wood as raw material to produce high polymerisation degree dissolving pulp via a pre-hydrolysed sulphate process combined with elemental chlorine-free (ECF) bleaching technology. It investigated the variation patterns of polymerisation degree and lignin content in the pulp during cooking and bleaching, while examining the effects of different process conditions on the composition and properties of the dissolving pulp. The results indicated that during the prehydrolysis-kraft pulping process, when the cooking temperature was 160 ℃, the retention time was 60 min, the dosage of alkali (measured by NaOH) was 15%, and the sulfurization degree (measured by Na2S) was 30%, the unbleached pulp produced exhibited a Kappa value of 23.1 and a degree of polymerisation of 1 684. Following ECF bleaching, the total lignin content was reduced to 0.86%. Combined with cold-alkali extraction for pulp purification, a high-quality dissolving pulp comprising α-cellulose of 93.94% and hemicellulose of 4.71%, with an average polymerisation degree of 1 393 was yielded.
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