基于酸性红染料的杨木单板高色牢度常温染色  

High Color Fastness Dyeing of Poplar Veneer at Normal Temperature Based on Acid Red Dye

作　　者：徐锦 芈聪慧 迟文锐 朱琦浩 王立娟[1] XU Jin;MI Conghui;CHI Wenrui;ZHU Qihao;WANG Lijuan(Key Laboratory of Bio-based Materials Science and Technology,Ministry of Education,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室,哈尔滨150040

出　　处：《森林工程》2023年第6期81-87,共7页Forest Engineering

基　　金：国家自然科学基金项目(32071693)。

摘　　要：为解决工业上木材染色耗费大量能源且染色单板色牢度差的问题,从提高杨木与染料的结合牢度入手,采用木材纤维醚化改性的方法,增强杨木与染料的相互作用。将带正电的季铵盐基团接枝到木材纤维上,木材纤维与染料通过离子键作用,成功制备了高色牢度的常温染色杨木单板。木材纹孔及导管上均匀地沉积了大量染料颗粒。改性过程中纤维素的结晶形态未发生改变,且染色单板的结晶度有所提高。染色单板出现新的吸收峰以及N元素价态变化,证实木材与染料通过离子键结合。ΔE(总色差)和上染率较传统煮沸染色分别提高5.607和17.38%。耐日光性能优异,日晒24 h时,ΔE为7.702±0.625。染料的结合强度高,水洗前后ΔE和水洗液吸光度分别是传统染色单板的16.97%和5.19%。研究结果为解决实际生产中木材染色温度高、酸性染料染色材日晒牢度低的问题提供了思路。In order to solve the problems that wood dyeing consumes a lot of energy in industry and the color fastness of dyed veneer is poor,starting from improving the binding fastness of poplar to dye,the interaction between poplar and dye was enhanced by etherification modification of wood fiber.The wood fiber was grafted with positive quaternary ammonium salt group,which interacted with dye through ionic bond,and the dyed poplar veneer with high color fastness was successfully prepared at normal temperature.A large number of dye particles were uniformly deposited on wood pits and vessels.The crystalline morphology of cellulose did not change during the modification,and the crystallinity of dyed veneer increased to some extent.The new absorption peaks and the change of valence state of N element appeared in the dyed veneer,which confirmed that wood and dye were bonded by ionic bond.TheΔE(total chromatic aberration)and dye-uptake were increased by 5.607 and17.38%,respectively,compared with traditional boiling dyeing.The light fastness was excellent,when exposed to light for 24 hours,ΔE was 7.702±0.625.The bonding strength was high,theΔE before and after washing and the absorbance of washed solution were 16.97%and 5.19%of the traditional dyed veneer,respectively.The results of this study provided an idea for solving the problems of high temperature of wood dyeing and low light fastness of acid dye dyed wood in actual production.

关 键 词：杨木 染色效果 常温染色 高色牢度 季铵化 

分 类 号：TS65[轻工技术与工程]