杂交鹅掌楸溶解浆的制备  

Preparation of Dissolving Pulp from Liriodendron Hybrids

作　　者：袁亚东[1,2] 张锦[1,2] 时留新[1,2] 金二锁 

机构地区：[1]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037 [2]南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京210037

出　　处：《纤维素科学与技术》2016年第3期17-23,共7页Journal of Cellulose Science and Technology

基　　金：国家林业局948项目(2012-4-09);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：对杂交鹅掌楸制备溶解浆的蒸煮工艺条件进行了优化,为其成为制备溶解浆新材料提供了理论支持。在0.5%酸浓、170℃、液比1∶3.5条件下稀酸预水解90 min,而后在蒸煮条件为保温温度165℃、液比1∶4、保温时间90 min、用碱量19%(Na_2O计)、硫化度20%下对木片进行硫酸盐法蒸煮,接着进行氧脱木质素和D_0E_PD_1漂序的ECF漂白,然后进行稀酸洗涤,最终制得粘度为8.5 MPa·s、a-纤维素为96.2%、灰分为0.04%、聚戊糖为2.58%、白度为89.1%ISO、铁离子含量为12.5 mg/kg、二氯甲烷抽出物为0.05%的一等品溶解浆。The cooking conditions of Liriodendron Hybrids for preparing dissolving pulp were optimized. It provided theoretical support for Liriodendron Hybrids becoming a new material to produce dissolving pulp. In the stage of pre-hydrolysis, the conditions were controlled followed by acid concentration of 0.5%, temperature of 170℃, liquor ratio of 1 ： 3.5 and hydrolysis time of 90 min. In the following cooking period, holding temperature of 165 ℃, holding time of 90 min, liquor ratio of 1 ： 4, alkali charge of 19% （Na2O） and sulfidity of 20% was set for cooking chips by kraft method. Oxygen delignification, ECF bleaching process of DoEpDI and following dilute acid washing was operated, and dissolving pulp with first grade quality was obtained. The dissolving pulp had the property with viscosity of 8.5 MPa· s, α-cellulose content of 96.2%, ash content of 0.04%, pentosan component of 2.58%, brightness of 89.1% ISO, iron ion proportion of 12.5 mg/kg.

关 键 词：杂交鹅掌楸 溶解浆 硫酸盐法蒸煮 ECF漂白 

分 类 号：TS749[轻工技术与工程—制浆造纸工程]