Page 65 - 《精细化工》2022年第2期

第 39 卷第 2 期 精 细 化 工 Vol.39, No.2
2022 年 2 月 FINE CHEMICALS Feb. 2022

功能材料
表面活性剂分散多壁碳纳米管机理及性能评价

陈泽宇 1,2,3 ，刘 静 1,2,3* ，蒲春生 1,2,3 ，李 旭 1,2,3 ，白 云 1,2,3

〔1. 中国石油大学（华东） 石油工程学院，山东 青岛 266580；2. 中国石油大学（华东）非常规油气开
发教育部重点实验室，山东 青岛 266580；3. 山东省油田化学省级重点实验室，山东 青岛 266580〕

摘要：十二烷基硫酸钠（SDS）、十六烷基三甲基溴化铵（CTAB）、壬基酚醚璜基琥珀酸单酯二钠盐（HT A-103）、
辛基酚聚氧乙烯醚（OP-10）分别与质量分数为 0.1%的多壁碳纳米管（MWCNTs）复配，制备出 4 种表面活性
剂-MWCNTs 分散体系。利用 UV-Vis 光谱、Zeta 电位及 SEM 对其分散性进行了评价，分析了各类表面活性剂
在 MWCNTs 表面的吸附方式以及对分散性能的作用机理和影响规律。结果表明，SDS、CTAB、HT A-103、OP-10
质量分数分别在 0.30%、0.04%、0.025%、0.06%时体系达到最佳分散效果，分散性能顺序为：CTAB>HT
A-103>OP-10>SDS，各体系分散性均随表面活性剂质量分数的升高先增大后减小；CTAB 在静电引力、疏水力
及范德华力作用下形成双层吸附紧密吸附包裹在 MWCNTs 表面，表面电势与空间位阻均高于其他 3 种体系； 与
SDS 相比，HT A-103 可赋予 MWCNTs 更高的表面电势，同时凭借苯环与 MWCNTs 间的 π-π 作用增强了吸附性能。
关键词：多壁碳纳米管；表面活性剂；分散；吸附；团聚；功能材料
中图分类号：TB383; TQ127.1 文献标识码：A
文章编号：1003-5214 (2022) 02-0269-07 开放科学 (资源服务) 标识码 (OSID)：

Surfactant-assisted multi-walled carbon nanotubes dispersion:
Mechanism and properties evaluation

CHEN Zeyu 1,2,3 , LIU Jing 1,2,3* , PU Chunsheng 1,2,3 , LI Xu 1,2,3 , BAI Yun 1,2,3
（1. College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, Shandong, China; 2. Key
Laboratory of Unconventional Oil & Gas Development, China University of Petroleum, Qingdao 266580, Shandong,
China; 3. Shandong Key Laboratory of Oilfield Chemistry, Qingdao 266580, Shandong, China）

Abstract: Sodium dodecyl sulfate (SDS), cetyl trimethyl ammonium bromide (CTAB), nonylphenol ether
sulfosuccinate monoester disodium salt (HT A-103) and octaphenyl polyoxyethyiene (OP-10) were
compounded with mass fraction of 0.1% of multi-walled carbon nanotubes (MWCNTs) to prepare four
kinds of dispersions, respectively. The dispersing properties were evaluated by UV-Vis adsorption
spectrum, Zeta potential and SEM. The adsorption modes of different surfactants on the surface of
MWCNTs and their effect on dispersion properties were analyzed. The results showed that the best
dispersion effect of MWCNTs system was achieved mass fractions of SDS, CTAB, HT A-103 and OP-10
at 0.30%, 0.04%, 0.025%, 0.06%, respectively. The order of dispersibility of surfactants-modified
MWCNTs was: CTAB>HT A-103>OP-10>SDS. The dispersibility of all systems first increased and then
decreased with the increase of mass fraction of surfactant. Both surface potential and steric hindrance of
CTAB-assitied MWCNTs system were higher than those of the other systems, which was attributed to that
CTAB molecules could form a double layer adsorption on the MWCNTs through electrostatic force, Van
der Waals force, and hydrophobic force. Compared with SDS, HT A-103 could endow MWCNTs with a
higher surface potential, and enhance the adsorption properties by virtue of the π-π interaction between
benzene ring and MWCNTs.
Key words: multi-walled carbon nanotubes; surfactants; dispersion; adsorption; agglomerat; functional materials

收稿日期：2021-10-04; 定用日期：2021-12-06; DOI: 10.13550/j.jxhg.20211007
基金项目：国家重点研发计划资助（2020YFA0711800）
作者简介： 陈泽宇（1995—），男，硕士生，E-mail：17854217872@163.com。联系人：刘 静（1982—），讲师，E-mail：liujing4522009@163.com。