新型两性季铵盐型荧光增白剂的合成及光学性能研究  

Synthesis and Optical Properties of New Amphoteric Quaternary Ammonium Salt Fluorescent Brighteners

作　　者：刘静[1,2] 张光华[1] 解攀[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [2]咸阳师范学院化学与化工学院,陕西咸阳712000

出　　处：《高校化学工程学报》2010年第5期836-841,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金项目(5037302);陕西省自然科学基础研究项目(2009JM2010);陕西省教育厅科学研究计划项目(09JK801)

摘　　要：以巯基替代其中一种氨基化合物,经过三步缩合反应得到双三嗪氨基二苯乙烯型荧光增白剂,与失水甘油基三甲基氯化铵发生开环反应,合成了新型结构的系列两性季铵盐型荧光增白剂。通过元素分析和IR光谱等手段对其分子结构进行了表征,用紫外吸收光谱、荧光发射光谱、光致异构化现象及纸上应用试验等手段研究了它们在水溶液中光物理化学性质及增白性能。结果表明此两性季铵盐型荧光增白剂与传统荧光增白剂VBL相比,其耐酸碱性能、紫外吸收性能得到很大改善,对日光很稳定,对纸张的增白效果好,对纤维吸附性好,使用范围扩大,但荧光发射性能略有降低;同时三嗪环上不同类型取代基对光的吸收和荧光分配并无显著影响。Replacing one of the amino compounds with sulfhydryl group,the triazinyl aminostilbene fluorescent brighteners（FBs） were synthesized through three-step condensation reaction.The new amphoteric quaternary ammonium salt fluorescent brighteners were prepared by ring-opening reaction of the above FBs with glycidyl trimethyl ammonium chloride（GTMAC）.The molecular structures of the prepared new quaternary ammonium salt FBs were characterized by elemental analysis and IR spectra;their photophysical and photochemical characteristics and their whitening properties were studied respectively by ultraviolet ray absorption spectra,fluorescence emission spectra,photoinduced isomerization phenomena and paper application test.The results show that,comparing with the traditional FBs,such as VBL,the acid /alkali resistance and ultraviolet ray absorption performance of the prepared amphoteric quaternary ammonium salt FBs are improved obviously,its light stability is great,its brightening effect and adsorptivity for paper fiber is nice,therefore its usage can be enlarged,while its fluorescence emission performance is slightly lower.The results also show that different types of substituents on the triazine ring do not affect the absorption-fluorescence assignments significantly.

关 键 词：荧光增白剂 季铵盐 光学性能 光致异构化 

分 类 号：TQ649.69[化学工程—精细化工]