针叶木浆制备莱赛尔级溶解浆工艺探究  

Investigate on the Dissolving Pulp Preparation for Lyocell Fiber from Paper Grade Softwood Pulp

作　　者：谢晓丽 徐峻[1,2] 鲁俊良[1] 张伟 XIE Xiaoli;XU Jun;LU Junliang;ZHANG Wei(State Key Laboratory of Pulp and Papermaking Engineering,South China University of Technology,Guangzhou 510640,China;Shandong Sun Paper Industry Joint Stock Co.Ltd,Jining 272105,China)

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640 [2]山东太阳纸业股份有限公司,山东济宁272105

出　　处：《造纸科学与技术》2024年第7期1-4,18,共5页Paper Science And Technology

基　　金：广东省重点领域研发专项(2022B1111080004);山东省济宁市“全球揭榜”项目(2022JBZP003)。

摘　　要：实验以针叶木浆为原料,针对标莱赛尔纤维专用溶解浆性能指标,探究了冷碱抽提、纤维素酶处理及两者联合预处理对浆料特性的影响,优选出针叶木浆制备Lyocell级溶解浆的工艺。结果表明,采用先碱处理后纤维素酶处理两步法,可以显著提升浆料的性能,最优条件下所得溶解浆中α-纤维素含量达到97.1%、聚合度为663.2、灰分含量0.03%、铜离子含量1.2mg/kg、白度90.2%ISO。In this experiment,the properties of Lyocell fiber soluble pulp imported from softwood wood were studied,and the effects of cold alkali extraction,cellulase treatment and combined pretreatment on the properties of pulp were investigated.The process of preparing Lyocell grade soluble pulp was optimized.The results showed that the properties of the slurry could be significantly improved by the two-step method of first alkali treatment followed by cellulase treatment.The content ofα-cellulose reached 97.1%,the degree of polymerization decreased to 663.2,the ash content was 0.03%,the copper ion was 1.2mg/kg,and the whiteness was 90.2%ISO.

关 键 词：溶解浆 LYOCELL纤维 纤维素酶 冷碱抽提 

分 类 号：TS756[轻工技术与工程—制浆造纸工程]