Page 175 - 201811

第 35 卷第 11 期 精 细 化 工 Vol.35, No.11
2018 年 11 月 FINE CHEMICALS Nov. 2018

丙烯酸系列化学品
水性纯丙乳液的合成及其附着性能

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闫继芳 ，王 琪 ，彭辰晨 ，徐英杰 ，黄蓓青 ，魏先福 1,2*
（1. 南京林业大学 轻工与食品学院，江苏南京 210037；2. 北京印刷学院 印刷与包装工程学院，北京
102600）
摘要：以甲基丙烯酸甲酯（MMA）、丙烯酸异辛酯（2-EHA）分别为硬、软单体，甲基丙烯酸（MAA）为功能
单体，过硫酸铵（APS）为引发剂，十二烷基硫酸钠（SDS）、脂肪醇聚氧乙烯醚（AEO-9）为乳化剂，采用半
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连续种子乳液聚合法合成了不同单体配比的水性聚丙烯酸酯乳液。利用 ATR-FTIR、HNMR、GPC、TG 和 DMA
测定了水性聚丙烯酸酯的结构及性能。结果表明：当 m(MMA)∶m（2-EHA）从 10∶10 减小到 7∶13，聚丙烯
酸酯乳液的粒径不变（约为 100 nm），乳液膜的热稳定性提高，分解温度从 327.5 ℃升高到 343.5 ℃，玻璃化
转变温度从 21 ℃降至3.5 ℃，乳液的表面张力从 39.83 mN/m 降至 36.71 mN/m、界面张力从 19.01 mN/m 降至
4.87 mN/m、接触角从 62.6°降到 27.8°，附着牢度从 50%提高到 95%；当 m(MMA)∶m(2-EHA)=7∶13 时，乳液
的润湿性最好（接触角为 27.8°），附着牢度最高（95%），满足乳液在 BOPP 薄膜上的应用要求。说明提高聚合
物中软单体含量有利于提高乳液的附着力。
关键词：水性纯丙乳液；润湿性；附着牢度；BOPP 薄膜
中图分类号：TS802.3 文献标识码：A 文章编号：1003-5214 (2018) 11-1961-07

Synthesis and Adhesion Properties of Waterborne

Polyacrylate Emulsions

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YAN Ji-fang , WANG Qi , PENG Chen-chen , XU Ying-jie ,
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HUANG Bei-qing , WEI Xian-fu 1,2*
（1. College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China;
2. School of Printing and Packaging Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China）
Abstract: Waterborne polyacrylate emulsions with different mass ratios of hard/soft monomer were
synthesized by semi-continuous seed emulsion polymerization using methyl methacrylate (MMA),
2-ethylhexyl acrylate (2-EHA), methylacrylic acid (MAA) as hard monomer, soft monomer and functional
monomer respectively, ammonium persulfate (APS) as initiator, sodium dodecyl sulfate (SDS) and primary
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alcobol ethoxylate (AEO-9) as emulsifier. ATR-FTIR, HNMR, GPC, TG and DMA were used to
characterize the structure and properties of the resulting waterborne polyacrylate. The results showed that
when mass ratio of MMA to 2-EHA decreased from 10∶10 to 7∶13, the particle size of the waterborne
polyacrylate emulsions kept unchanged, approximately 100 nm. The thermal stability of the polyacrylate
films was improved, the decomposition temperature increased from 327.5 ℃ to 343.5 ℃, the glass
transition temperature decreased from 21 ℃ to -3.5 ℃. Moreover, the surface tensions of the polyacrylate
emulsions decreased from 39.83 mN/m to 36.71 mN/m, the interfacial tensions between the emulsions and
BOPP film decreased from 19.01 mN/m to 4.87 mN/m, the contact angles of the emulsions on BOPP film
decreased from 62.6° to 27.8°, and the adhesion ratio increased from 50% to 95%. When mass ratio of
MMA to 2-EHA was 7∶13, the prepared emulsion had the best wettability (27.8°) and the highest fastness
(95%), which could satisfy the application requirement of polyacrylate emulsion on BOPP film, indicating
that increasing the content of soft monomer in the polymer could improve the adhesion of the emulsion.

收稿日期：2018-05-08; 定用日期：2018-10-12; DOI: 10.13550/j.jxhg.20180330
基金项目：绿色印刷与出版技术 2011 协同创新中心-绿色印刷与包装安全领域（04190117029/001）
作者简介：闫继芳（1985—），女，博士生。联系人：魏先福（1963—），男，教授、博士生导师，E-mail：weixianfu@bigc.edu.cn。