第30卷第5期高校化学工程学报No.5Vol.30 2016年10月Journal of Chemical Engineering of Chinese Universities Oct.2016文章编号：1003-9015(2016)05-1146-07
木质素磺酸盐的分散研磨性能和改性研究
陈晓健1,姜宏涛1,周长凯2,沈永嘉1
(1.华东理工大学精细化工研究所上海200237; 2.南通恒盛精细化工有限公司,江苏南通226407)
摘要：为提升低品质木质素磺酸盐的分散研磨性能，以高品质的Reax85A为基础性研究的对象，通过不同截留分子
量的超滤膜对它进行分子量分级，获得了三个不同特性黏度([η])的木质素磺酸盐组分。将它们作为分散剂对C.I.分散
蓝354的原染料进行研磨以考察其分散研磨效率。结果表明，木质素磺酸盐的分散研磨性能与其特性黏度大小正相关。
为验证这一结论，在苯酚和甲醛的存在下，对特性黏度较小的木质素磺酸盐进行了分子量嫁接的改性反应，并考察了
各改性产物作为分散剂在相同实验条件下对同一染料的分散研磨效率。结果表明，改性产物的特性黏度随苯酚和甲醛
投料质量比的增加而增大，但是苯酚和甲醛的投料质量比不宜过大，否则会有酚醛缩合物生成；特性黏度较大的改性
产物其分散研磨性能也较好，组分R-00([η]=2.25)与Vyborg([η]=3.74)经嫁接反应后获得的改性产物([η]=4.28)使同
一染料分散体的扩散度达到5级只需要16h，其分散研磨效率高于Reax85A。
关键词：木质素磺酸盐；分子量分级；特性黏度；交联反应；分散效率
中图分类号：TQ610.42文献标识码：A DOI：10.3969/j.issn.1003-9015.2016.05.023
Dispersing and Grinding Performance of Lignosulfonates and their Modification via
Crosslinking Reactions
CHEN Xiao-jian1,JIANG Hong-tao1,ZHOU Chang-kai2,SHEN Yong-jia1
(1.Institute of Fine Chemicals,East China University of Science and Technology,Shanghai200237,China;
2.Nantong Hengsheng Fine Chemical Co.,Ltd.,Nantong226407,China)
Abstract:In order to improve dispersing performance of low quality lignosulfonates,high quality lignosulfonate(Reax85A)was used to prepare three different fractions of Reax85A with different intrinsic viscosities([η])by membrane ultrafiltration.Their dispersing efficiency for C.I.Disperse Blue354was evaluated.The results indicate that their dispersing efficiency is positively associated with their intrinsic viscosity.Crosslinking reactions were performed between lignosulfonates with low intrinsic viscosities in the presence of phenol and formaldehyde,and the dispersing efficiency of the products was evaluated by sand-milling under the same conditions.The results illustrate that when the mass ratio of phenol and formaldehyde increases,the intrinsic viscosity of the crosslinking product also increases.However,the mass ratio cannot be overhigh which results in the condensation of phenol and aldehyde.Products with higher intrinsic viscosity possess higher dispersing efficiency.The product([η]=4.28)obtained from crosslinking between R-00([η]=2.25)and Vyborg([η]=3.74)shows good dispersion efficiency for C.I.Disperse Blue354, and it takes only16h to make the dye diffusion to reach degree5,which is better than Reax85A.
Key words:lignosulfonate;molecular weight distribution;intrinsic viscosity;crosslinking reaction;
dispersing efficiency
1前言
木质素广泛存在于植物体中，它是由苯丙烷单元(如，愈创木基结构G、紫丁香基结构S和对羟苯
收稿日期：2016-02-29；修订日期：2016-05-05。
作者简介：陈晓健(1989-)，女，福建龙岩人，华东理工大学硕士生。通讯联系人：沈永嘉，E-mail：yjshen@https://www.doczj.com/doc/f87381128.html,
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