张光华， 卢玉群， 郭明媛， 吕 彤

(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)

硅氧烷改性二苯乙烯型荧光增白剂的合成与性能研究

张光华， 卢玉群， 郭明媛， 吕 彤

(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)

在三聚氯氰的交联作用下，经过亲核取代反应将3-氨基丙基三甲氧基硅烷(KH-540)、乙醇胺与4,4′- 二氨基二苯乙烯-2,2′-二磺酸(简称DSD酸)引入到同一分子中,再经过水解反应设计出结构新颖的水溶性大分子荧光增白剂.通过红外光谱、核磁共振波谱测定产物的结构，用紫外光谱、荧光光谱等手段研究了其在水溶液中的光物理化学性能，并考察了目标产物在纸张返黄抑制上的应用.结果表明，合成的目标产物水溶性较好，光稳定性较好，纸张涂布时的最佳用量为0.8%，初始白度比未经过处理的纸张增加了16.98个百分点.且经过38 h的紫外光照射后，发现目标产物对纸张有更好的返黄抑制效果.

二苯乙烯型荧光增白剂； 3-氨基丙基三甲氧基硅烷(KH-540)； 水解；白度稳定性

Abstract:With cyanuric chloride as the crosslinking monomer and 4,4′-diamino stilbene-2,2′-disulfonic acid (DSD acid) as raw materials,3-aminopropyltrimethoxysilane (KH-540)、Ethanolamine and stilbene-based fluorescent whitening agent were introduced into the same molecule by nucleophilic substitution method.A novel water soluble small molecule fluorescent whitening agent was designed by the hydrolysis reaction.The molecular structures were characterized by means of IR spectra and1HNMR,the physical and chemical properties of light in aqueous solution were studied by means of UV and photoluminescence(PL) spectra,and its anti- yellowing effect was evaluated when used as the surface sizing agent on handsheet of chemimechanical pulps by using the ultraviolet aging apparatus.The results show that the target product has good water-solubility and good light stability and the best dosage of the new yellowing inhibitor was 0.8% (mass fraction),the initial whiteness increased by 16.98 percentage points over the untreated paper.And after 38h of UV irradiation,the target product have better anti-yellowing inhibition effect on paper.

Keywords:stilbene-based fluorescent whitening agent； 3-aminopropyltrimethoxysilane (KH-540)； hydrolysis； whiteness stability

0 引言

目前，我国木材资源比较匮乏，高得率浆的使用不仅可以缓解这一现象，而且具有成本低、污染小的优点[1-3].但是由于高得率浆中的木质素容易在外界自然光、热等的影响下发生返黄现象，影响及限制了其应用.因此，如何避免及解决这种问题，成为目前学者们研究的主要方向.

二苯乙烯型荧光增白剂是一种应用极广的荧光增白物质，它具有紫外……