碱激发多层组装落叶松鞣质基棉织物的甲醛吸附性能  

Formaldehyde adsorption performance of alkali-activated and multi-layer assembly larch bark tannin-based cotton fabrics

作　　者：苏小舟[1,2] 刘新典 黄鑫 SU Xiaozhou;LIU Xindian;HUANG Xin(College of Intelligent Textiles and Fabric Electronics,Zhongyuan University of Technology,Zhengzhou 450007,China;Zhengzhou Key Laboratory of Green Dyeing and Finishing Technology,Zhengzhou 451191,China)

机构地区：[1]中原工学院智能纺织与织物电子学院,河南郑州450007 [2]郑州市绿色染整技术重点实验室,河南郑州451191

出　　处：《印染》2025年第3期6-11,共6页China Dyeing and Finishing

基　　金：河南省高等学校青年骨干教师培养计划(2021GGJS107);河南省自然科学基金面上项目(242300421360);中原工学院优势学科实力提升计划资助(GG202214);中原工学院自然科学基金项目青年基金(K2023QN005)。

摘　　要：以落叶松鞣质(LBT)为吸附载体,借助多层自组装法将其整理至经聚二甲基二烯丙基氯化铵(PDMDAAC)预处理的棉织物上,并通过碱激发鞣质,制备出具有甲醛吸附能力的LBT基棉织物。优化的LBT与甲醛的反应条件为:温度30℃,pH为12。通过正交试验,优化鞣质整理棉织物的最佳条件为:鞣质质量浓度30 g/L,100℃汽蒸10 min。通过扫描电子显微镜、傅里叶红外光谱仪、比表面积分析仪、X射线衍射仪、同步热分析仪和气相色谱仪对碱激发鞣质多层组装整理后的棉织物的形貌、化学结构进行表征。结果显示,组装整理后的棉织物其表面存在粒径10~50 nm的PDMDAAC-LBT纳米粒子,织物的结晶度从71.553%轻微下降到71.051%,吸附等温线属于Ⅲ型吸附,整理后比表面积由原布的1.2235 m^(2)/g下降至1.1195 m^(2)/g,平均孔径由11.99 nm缩小到11.62 nm。在起始浓度为1.4 mg/L,温度为30℃下吸附1 h,甲醛的最大去除率可达87.16%。In order to examine the formaldehyde adsorption performance of larch bark tannin(LBT)-treated cotton fabrics and explore their adsorption mechanisms,a multi-layer assembly method is used to modify the cotton fabrics using polydimethyldiallylammonium chloride(PDMDAAC)as a crosslinker and LBT as an adsorbent.After the initiation of the formaldehyde adsorption activity through alkali,LBT-based cotton fabrics with effective formaldehyde adsorption capabilities are prepared.Through single-factor analysis in a solution system,the optimal reaction conditions for LBT and formaldehyde are determined to be the temperature of 30℃and the pH of 12.Orthogonal experimental analysis reveals that the optimal conditions for tannin-treated cotton fabrics are the tannin concentration of 30 g/L,the steaming temperature of 100℃,and the steaming time of 10 min.The morphology and chemical structure of the LBT-based cotton fabrics are characterized using scanning electron microscopy,Fourier-transform infrared spectroscopy,specific surface area analysis,X-ray diffraction,simultaneous thermal analysis,and gas chromatography.The results show that PDMDAAC-LBT nanoparticles are formed on the surface of the cotton fabric with a particle size ranging from 10 nm to 50 nm after the assembly treatment,while the crystallinity of the fabrics slightly decreases from 71.553%to 71.051%.The adsorption isotherm is classified as type Ⅲ,and the specific surface area after treatment slightly decreases from 1.2235 m^(2)/g to 1.1195 m^(2)/g,with the average pore diameter reducing from 11.99 nm to 11.62 nm.In a hermetically sealed chamber maintained at 30℃,the maximum formaldehyde removal efficiency reaches 87.16%with the initial concentration of 1.4 mg/L within 1 h.

关 键 词：落叶松鞣质 甲醛 吸附 多层组装 碱激发 棉织物 

分 类 号：TS195.5[轻工技术与工程—纺织化学与染整工程] TS102.6[轻工技术与工程—纺织科学与工程]