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1
Effects of polymer wrapping and covalent functionalization on the stability of MWCNT in aqueous dispersions.聚合物包裹和共价功能化对 MWCNT 在水相分散体中稳定性的影响。
J Colloid Interface Sci. 2011 Mar 15;355(2):383-8. doi: 10.1016/j.jcis.2010.12.052. Epub 2010 Dec 22.
2
Quantitative techniques for assessing and controlling the dispersion and biological effects of multiwalled carbon nanotubes in mammalian tissue culture cells.评估和控制多壁碳纳米管在哺乳动物组织培养细胞中分散和生物效应的定量技术。
ACS Nano. 2010 Dec 28;4(12):7241-52. doi: 10.1021/nn102112b. Epub 2010 Nov 10.
3
Aspect ratio has no effect on genotoxicity of multi-wall carbon nanotubes.纵横比对多壁碳纳米管的遗传毒性没有影响。
Arch Toxicol. 2011 Jul;85(7):775-86. doi: 10.1007/s00204-010-0574-0. Epub 2010 Jul 9.
4
Higher dispersion efficacy of functionalized carbon nanotubes in chemical and biological environments.功能化碳纳米管在化学和生物环境中的更高分散效能。
ACS Nano. 2010 May 25;4(5):2615-26. doi: 10.1021/nn100069k.
5
Size-dependent toxicity of metal oxide particles--a comparison between nano- and micrometer size.金属氧化物颗粒的尺寸依赖性毒性——纳米级与微米级颗粒的比较
Toxicol Lett. 2009 Jul 24;188(2):112-8. doi: 10.1016/j.toxlet.2009.03.014. Epub 2009 Mar 26.
6
Size-dependent cytotoxicity of monodisperse silica nanoparticles in human endothelial cells.单分散二氧化硅纳米颗粒在人内皮细胞中的尺寸依赖性细胞毒性。
Small. 2009 Apr;5(7):846-53. doi: 10.1002/smll.200800461.
7
Colloidal properties of aqueous suspensions of acid-treated, multi-walled carbon nanotubes.酸处理多壁碳纳米管水悬浮液的胶体性质
Environ Sci Technol. 2009 Feb 1;43(3):819-25. doi: 10.1021/es802011e.
8
Fast microwave-assisted purification, functionalization and dispersion of multi-walled carbon nanotubes.多壁碳纳米管的快速微波辅助纯化、功能化及分散
J Nanosci Nanotechnol. 2008 Nov;8(11):5770-5. doi: 10.1166/jnn.2008.215.
9
Aqueous stability of oxidized carbon nanotubes and the precipitation by salts.氧化碳纳米管的水相稳定性及盐引发的沉淀
J Hazard Mater. 2009 Jun 15;165(1-3):1239-42. doi: 10.1016/j.jhazmat.2008.10.049. Epub 2008 Oct 19.
10
Aggregation kinetics of multiwalled carbon nanotubes in aquatic systems: measurements and environmental implications.水生系统中多壁碳纳米管的聚集动力学：测量与环境影响
Environ Sci Technol. 2008 Nov 1;42(21):7963-9. doi: 10.1021/es801251c.

羧基化多壁碳纳米管的尺寸依赖性水分散性。

Size dependent aqueous dispersibility of carboxylated multiwall carbon nanotubes.

作者信息

Ntim Susana Addo, Sae-Khow Ornthida, Desai Chintal, Witzmann Frank A, Mitra Somenath

机构信息

Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, USA.

出版信息

J Environ Monit. 2012 Oct 26;14(10):2772-9. doi: 10.1039/c2em30405h. Epub 2012 Sep 13.

DOI:10.1039/c2em30405h
PMID:22972403
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3752666/
Abstract

The size dependent colloidal behavior of aqueous dispersions of carboxylated multiwall carbon nanotubes (c-MWCNTs) is presented. The presence of carboxylic groups provided electrostatic stabilization in water, where the size affected agglomeration. While aspect ratio did not show any definite correlation, the hydrophobicity indices (HI), zeta potential and aggregation kinetics showed dependence on the length of the c-MWCNTs where the shorter c-MWCNTs showed significantly lower HI values, smaller particle aggregates, higher zeta potential values and higher critical coagulation concentrations (ccc) in the presence of electrolytes. Although the diameter of the short c-MWCNTs did not appear to influence their aggregation behavior, the longer c-MWCNTs showed a dependence on diameter where stability decreased with increasing CNT diameter.

摘要

本文介绍了羧基化多壁碳纳米管（c-MWCNTs）水分散体的尺寸依赖性胶体行为。羧基的存在在水中提供了静电稳定性，其中尺寸影响团聚。虽然长径比未显示出任何明确的相关性，但疏水指数（HI）、zeta电位和聚集动力学显示出对c-MWCNTs长度的依赖性，其中较短的c-MWCNTs在电解质存在下显示出明显较低的HI值、较小的颗粒聚集体、较高的zeta电位值和较高的临界聚沉浓度（ccc）。尽管短c-MWCNTs的直径似乎不影响其聚集行为，但较长的c-MWCNTs显示出对直径的依赖性，稳定性随碳纳米管直径的增加而降低。