摘要
以4,4’-二氨基二苯乙烯-2,2’-二磺酸(简称DSD酸)为荧光母体,利用三聚氯氰的交联反应,经过亲核取代将乙醇胺、3-氨基丙基三甲氧基硅烷(KH-540)与荧光母体连接起来,制备了一种荧光增白剂。然后将其作为原料,采用改进的stober水解法,制备出了含有二苯乙烯型荧光增白剂的SiO2荧光纳米复合粒子。利用红外光谱仪测定了其结构,用扫描电镜(SEM)、透射电镜(TEM)、纳米粒度分析仪、热重(TG)分别对其形貌和热稳定性进行了观察,用紫外-可见光谱、荧光光谱对产物的光物理化学进行了表征,并利用紫外老化实验考察了荧光纳米粒子对纸张的返黄抑制效果。结果表明,在使用性能上,相同量的荧光增白剂,用纳米粒子改性后其对纸张的增白效果及光抑制效果更好。
In this paper, using 4, 4＇- diamino stilbene-2, 2＇-disulfonic acid （DSD acid） and cyanuric chloride as raw materials, ethanol amine, 3-aminopropyltrimethoxysilane （KH-540） and stilbene type fluorescent whitening agent were combined into one molecule through the nucleophilic substitution reaction. Then, using the products as the raw material, the SiO2 fluorescent composite nanoparticles containing stilbene type fluorescent whitening agent were prepared by the improved Stober hydrolysis method. The structure was determined by infrared spectroscopy, the morphology and thermal stability of the films were observed by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, nano-particle size analyzer and thermogravimetry （TG）, and the photophysical chemistry were characterized by UV-Vis spectrum and fluorescence spectrum. The effect of fluorescent nanoparticles on the yellowing inhibition of chemical pulp was investigated by UV accelerated aging experiments. The experimental results show that on the use of performance, with the same amount of fluorescent whitening agent, the whitening effect on paper and light inhibition effect were improved after nanoparticles modification.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2017年第10期10119-10125,共7页
Journal of Functional Materials
基金
国家自然科学基金资助项目(31670596)
作者简介
张光华（1962-），男，陕西咸阳人，教授，博士生导师，主要从事高分子功能材料及造纸化学品的制备与应用研究。通讯作者：张光华，E-mail：zhanggh@sust．edu．cn
