印染助剂TEXTILE AUXILIARIES Vol.30No.10Oct.2013
第30卷第10期2013年10月陈薇1，杨群1，2，陆大年1，刘爱莲2，柴红梅2，宋伟2
（1.东华大学，生态纺织教育部重点实验室，上海201620；2.浪莎针织有限公司，浙江义乌322000）
摘要：以马来酸酐(MAn)和醋酸乙烯酯(VAc)为原料,偶氮二异丁腈为引发剂,采用溶液聚合法制备了马来酸酐-醋酸乙烯
酯共聚物PMV,讨论了不同单体比例、引发剂用量、反应温度和不同溶剂对单体转化率以及共聚物的影响;马来酸酐-醋酸乙烯酯共聚物在NaOH 溶液中进行了皂化,讨论了皂化条件对皂化度的影响;皂化后的共聚物作为颜料分散剂在砂磨机上对矿物颜料进行纳米化.结果表明,该分散剂能使矿物颜料具有较好的分散性和分散稳定性.
关键词：马来酸酐;醋酸乙烯酯;溶液聚合;分散剂;研磨;粒径
中图分类号:TQ620.4；TQ314.255文献标识码:A 文章编号:1004-0439(2013)10-0020-04
Synthesis of maleic anhydride/vinyl acetate copolymer as pigment
dispersing agent and its dispersion effect
CHEN Wei 1,YANG Qun 1,2,LU Da ?nian 1,LIU Ai ?lian 2,CHAI Hong ?mei 2,SONG Wei 2
(1.Key Laboratory of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;https://www.doczj.com/doc/917701182.html,ngsha Knitting Co.,Ltd.,Yiwu 322000,China)
Abstract:The poly(maleic anhydride-co-vinyl acetate)copolymer (PMV)was prepared by solution polym ?
erization method with maleic anhydride and vinyl acetate as materials,azobisisobutyronitrile as initiator.The ef ?fects of monomers ratio,concentration of initiator,reaction temperature and solvents on the monomer conver ?sion and copolymer were discussed.The poly(maleic anhydride-co-vinyl acetate)copolymers were saponified in sodium hydroxide solution.The effects of saponification conditions on saponfication degree were discussed.The saponified poly(maleic anhydride-co-vinyl acetate)copolymers were used as pigment dispersant during the nanotechnology of mineral pigment with grinding mill.The results showed that the dispersant could en ?dow the mineral pigment with good dispensability and dispersion stability.
Key words:maleic anhydride;vinyl acetate;solution polymerization;dispersant;grinding;particle size
收稿日期：2012-12-04
作者简介：陈薇(1987-),女,湖北孝感人,在读硕士研究生,主要从事印染助剂的研究与开发.
通信作者：陆大年(1950-),教授,博士生导师.聚乙烯醇具有优越的粘接性,在悬浮聚合反应中常用作分散剂,在乳液聚合中常用作乳化剂[1-2];聚马
来酸酐具有优异的阻垢性能[3].马来酸酐(MAn)与醋酸乙烯酯(VAc)的共聚物马来酸酐-醋酸乙烯酯(PMV)
兼具两者的优点,是一种重要的高分子化学品.近年
来,不仅广泛应用于生物方面,也常作为分散剂、絮凝
剂、水质稳定剂、钻井泥浆稀释剂、土壤改良剂、皮革复鞣剂等使用[4-5].由于马来酸酐具有酸酐活性基团,醋酸乙烯酯可进行脱乙酰化,还能进一步功能化,大大拓宽了应用范围.在制备超细颜料的过程中,由于超细粉体具有较高的表面能,极易发生团聚,所以往往要加入分散剂稳定颜料粉体.分散稳定机理除了改变粉体表面的电性质,增大静电斥力外,主要通过增大高分子吸附层颜料分散剂马来酸酐-醋酸乙烯酯
共聚物的合成及分散效果