摘要
针对前处理中莱赛尔织物在浓碱、湿热和摩擦作用下的原纤化问题,分别探究了冷轧堆碱退浆精练、汽蒸碱退浆精练、酶退浆、漂白和丝光等工艺对原纤化现象的影响,分析了NaOH、H2O2等化学品及时间、温度等条件与原纤分裂过程的关系,优化莱赛尔机织物前处理条件和加工流程。结果表明:虽然NaOH可有效提升织物毛效,但当其质量浓度在20 g/L以上时,莱赛尔纤维开始原纤化,并且随着质量浓度的增加,原纤化逐渐增强;采用淀粉酶退浆工艺不仅能够获得满意的白度和毛效,而且防原纤化效果较好;H2O2漂白能够进一步提升织物的白度,但H2O2质量浓度较高时,织物表面出现原纤化;使用浓碱丝光会使莱赛尔剧烈溶胀,织物发生严重的原纤化;采用酶退浆和轻漂白的短流程工艺可有效防止原纤化的发生。
Objective Lyocell fibers are prone to high fibrillation owing to the friction under alkaline condition.In order to reduce the fibrillation behavior,herein,the effects of pretreatment process,like cold pad-batch desizing,hot-alkali desizing,enzyme desizing,bleaching,and mercerizing on the fibrillation phenomenon were investigated.The relationship between chemicals such as NaOH,H 2O 2,as well as treatment conditions like time and temperature,and fibrillation generation process was analyzed.Then,the pretreatment conditions and process of Lyocell woven fabric were optimized.Method In this paper,in order to investigate the effect of desizing process on fibrillation phenomenon,cold pad-batch desizing,hot-alkali desizing,and enzyme desizing were conducted,respectively.Then,the desized Lyocell woven fabric was bleached and mercerized.The treatment conditions like time,pH value,temperature and the chemical concentration were determined.The capillary effect and whiteness were measured.The fibrillation behavior was determined using Martindale abrasion machine and observed with scanning electron microscope.From the comparison of the fabrics after the treatment of deszing,bleaching and mercerizing,the pretreatment process and conditions were optimized.Results The effects of desizing processes on the properties of capillary effect,whiteness,and fibrillation behavior were investigated.In the cold pad-batch desizing of Lyocell fabrics,capillary effect and whiteness increased as the NaOH concentration increased from 10 to 30 g/L(Fig.1 and Fig.2).However,when the concentration of NaOH was above 25 g/L,the pilling grade decreased and fibrillation appeared.Comparatively,the pilling grade of the Lyocell fabric decreased from significantly when the concentration of NaOH is above 20 g/L using hot-alkali desizing(Fig.5).It means that low temperature desizing could avoid the generation of fibrillation phenomenon to a certain extent.In enzyme desizing,the fabric obtained satisfactory capillary effect and whiteness at the enzyme concentrat
作者
石路健
宋亚伟
谢汝义
高志超
房宽峻
SHI Lujian;SONG Yawei;XIE Ruyi;GAO Zhichao;FANG Kuanjun(College of Textiles&Clothing,Qingdao University,Qingdao,Shandong 266071,China;Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education,Qingdao University,Qingdao,Shandong 266071,China;Yuyue Home Textile Co.,Ltd.,Binzhou,Shandong 256600,China)
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2023年第12期96-105,共10页
Journal of Textile Research
基金
山东省重大科技创新工程项目(2023CXGC010612)
省部共建生物多糖纤维成形与生态纺织国家重点实验室基金项目(ZDKT202103)。
关键词
莱赛尔机织物
原纤化
退浆
漂白
丝光
Lyocell woven fabric
fibrillation
desizing
bleaching
mercerizing
