研究了聚乙烯醇（PVA）、聚乙二醇（PEG）和羧甲基纤维素（CMC）3种载体对涂布纸CIE白度以及纸张色相的影响，比较了PVA对四磺酸型和六磺酸型荧光增白剂增白效果的影响，分析了紫外光照射下涂布纸白度的稳定性。结果表明：3种载体均能增加涂布纸的CIE白度，亮度指数L*增加，色度指数b*值降低，有利于改善成纸色相；但是a*值增加，会使纸色发红。荧光增白剂中磺酸基含量越高，载体增白效果越好，PVA对六磺酸型荧光增白剂增白效果要好于四磺酸型增白剂。3种载体均能提高涂布纸抗紫外照射能力，增强成纸耐候性。
Abstract
Influence of three kinds of carrier polyvinyl alcohol (PVA), polyethylene glycol (PEG) and carboxymethyl cellulose (CMC) on the CIE brightness and hue of coated paper were examined, and the influence of PVA on the brightening effect of the four sulfonic acidtype and six sulfonic acidtype fluorescence brightening agents was compared. Forthermore, the brightness stability of the coated paper under ultraviolet irradiation was also investigated. The results showed that all these three kinds of carrier all could increase the CIE brightness and the brightness L*value, reduce b*value, to improve the hue of coated paper. But with the increase of a*value, the color of paper would tend to red. The higher the sulfonic acid group in the optical brightening agent, the better the brightening effect of carrier. PVA had a better brightening effect on fluorescent brightening agent of six sulfonic acid than that of four sulfonic acid. All these three kinds of carriers could improve the brightness stability of the coated paper under ultraviolet irradiation, strengthen the paper’s resistance to element.
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基金
收稿日期：2011-05-29修回日期：2011-09-30基金项目：江苏省制浆造纸科学与技术重点实验室开放课题（200904）第一作者：张瑞萍，硕士生。*通信作者：景宜，教授，博士。Email: jingyi@njfu.com.cn。
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