含醛基两性聚合物复鞣剂的制备及其应用  

Preparation and application of amphoteric polymeric retanning agent containing aldehyde groups

作　　者：许伟 杨锐 柴晓叶 强西怀 王学川 XU Wei;YANG Rui;CHAI Xiao-ye;QIANG Xi-huai;WANG Xuechuan(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Chian;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]陕西科技大学轻化工程国家级实验教学示范中心,陕西西安710021

出　　处：《陕西科技大学学报》2021年第5期1-6,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家“十三五”重点研发计划项目(2017 YFB0308500)。

摘　　要：以丙烯酸(AA)、二甲基二烯丙基氯化铵(DADMAC)和十一烯醛(UDAL)为单体,偶氮二异丁腈(AIBN)为引发剂,通过自由基聚合反应制得一种含醛基两性聚合物(PADU)复鞣剂.利用红外光谱(FT-IR)、核磁共振氢谱(1H-MNR)和Zeta电位分析仪等分别对PADU复鞣剂的结构、PADU复鞣剂溶液的带电情况进行表征.再将PADU复鞣剂应用于F-90非金属鞣革复鞣,考察其对坯革与阴离子染料的结合能力及坯革性能的影响.结果表明,PADU复鞣剂主成分的结构为侧链含有羧基、季铵基和醛基的乙烯基聚合物.等电点为4.25,具有明显的两性.复鞣试验结果表明,经过PADU复鞣剂处理后的坯革,其对染料的吸收率高达99%,染色浴液透明清亮;坯革染色均匀、色泽饱满,K/S值、坯革增厚率以及物理机械性能均高于传统丙烯酸树脂复鞣剂处理后的坯革,表明PADU复鞣剂对F-90非金属鞣轻革具有良好的复鞣性能.An amphoteric polymeric retanning agent containing aldehyde groups(PADU)was prepared by copolymerizing reaction of acrylic acid(AA),dimethyldiallyl ammonium chloride(DADMAC)and undecylenic aldehyde(UDAL)and azodiisobutyronitrile(AIBN)used as an initiator.The structure of PADU was characterized by FT-IR and^(1)H-NMR.The charge characteristic of PADU solution was measured by Zeta potential analyzer.Then,PADU was applied as a retanning agent in non-metallic tanning system of F-90 to investigate its effect on dye-binding capacity of the retanned F-90 leather and physical and mechanical properties of the crust leather.Results showed that the structure of the main component of PADU retan-ning agent was a vinyl-based co polymer containing carboxyl,quaternary ammonium and alde-hyde groups.PADU had the isoelectric point of 4.25.The application trial indicated that the P ADU retanning agent can improve the binding capacity between F-90 tanning leather and anion dye during the retanning process.The dye absorption rate of the crust leather was up to 99%and the dyeing liquor was clear.F urthermore,color of the crust leather was uniform and full and its K/S value,thickening rate and physical-mechanical properties were higher than those of the leather retanned by acrylic resin retanning agent.The above results show that P ADU possesses the good retanning property in F-90 non-metallic tanning system.

关 键 词：醛基 两性聚合物 皮革复鞣剂 染料吸收率 

分 类 号：TS529.2[轻工技术与工程—皮革化学与工程]