摘要
苎麻生物酶脱胶具有节能环保、作用条件温和等优势,但单独生物酶处理得到的精干麻存在残胶率偏高,针对这一不足,从强化螯合剂预处理和碱氧后处理角度出发,以残胶率、蓝光白度、束纤维强度、柔软度和润湿性等为评价指标考察苎麻酶法脱胶效果提升。结果表明:在优化螯合剂预处理(螯合剂5 g/L,90℃保温1 h,浴比1∶15)和碱氧后处理(氢氧化钠4 g/L,TF-122H稳定剂3 g/L,硅酸钠2 g/L,双氰胺1 g/L,30%过氧化氢2 mL/L,98℃保温2 h,浴比1∶15)条件下,苎麻纤维残胶率可以降至4.29%,白度达到63.20%,束纤维强度达到3.55 cN/dtex。与传统化学脱胶工艺相比,新工艺制得的精干麻蓝光白度相近,而束纤维强度、柔软度和润湿性都明显高于传统工艺,残胶率略高。
The enzymatic degumming of ramie has advantages such as energy conservation,environmental protection,and mild operating conditions,but there is a disadvantage of high residual gum rate in fine dried hemp.This article starts from the perspective of strengthening chelator pretreatment and alkaline oxygen post-treatment,and evaluates the improvement of ramie enzymatic degumming effect using residual gum rate,blue light whiteness,bundle fiber strength,softness,and wettability as evaluation indicators.The results show that under optimized conditions of chelator pretreatment(chelator 5 g/L,90℃insulation for 1 h,bath ratio 1∶15)and alkaline oxygen post-treatment(sodium hydroxide 4 g/L,TF-122H stabilizer 3 g/L,sodium silicate 2 g/L,dicyandiamide 1 g/L,30%hydrogen peroxide 2 mL/L,98℃insulation for 2 h,bath ratio 1∶15),the residual gum rate of ramie fiber can be reduced to 4.29%,whiteness can reach 63.20%,and bundle fiber strength can reach 3.55 cN/dtex.Compared with the traditional chemical degumming process,the new process produces a similar blue light whiteness for fine and dry hemp,while the strength,softness,and wettability of the bundle fibers are significantly higher than those of the traditional process,but the residual glue rate is slightly higher.
作者
姜楠
王强
段旬妍
钱佳炜
余圆圆
周曼
王平
王程
徐苏捷
JIANG Nan;WANG Qiang;DUAN Xunyan;QIAN Jiawei;YU Yuanyuan;ZHOU Man;WANG Ping;WANG Cheng;XU Sujie(College of Textile Science and Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Huanggang Huachen Aima Textile Co.,Ltd.,Huanggang,Hubei 438000,China;Zhejiang Haoyu Technology Co.,Ltd.,Hangzhou,Zhejiang 312369,China)
出处
《毛纺科技》
CAS
北大核心
2024年第9期53-60,共8页
Wool Textile Journal
基金
国家重点研发计划项目(2021YFC2104000)。
关键词
苎麻纤维
酶脱胶
预处理
碱氧后处理
精干麻
ramie fiber
enzymatic degumming
pretreatment
alkaline oxygen post-treatment
degummed ramie
