多壁碳纳米管(MWCNTs)分别经混合、强酸氧化浸泡和酰氯化处理后,再与9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)的衍生物(DHDOPO)进行接枝反应得到表面功能化的 MWCNTs.利用傅里叶变换红外光谱仪(FT-IR )、透射电子显微镜(TEM )、扫描电子显微镜(SEM )、热重分析仪(TGA)、紫外-可见分光光度仪(UV-Vis)和沉降实验等分别表征改性前后 MWCNTs 的结构和表面形态,估算 DHDOPO 在 MWCNTs 表面的相对接枝率,研究改性前后 MWCNTs 在乙醇中的分散性.结果表明,MWCNTs 经混合强酸氧化后表面出现羧基；DHDOPO 在 MWCNTs 上的相对接枝率为51％；混合强酸氧化和表面接枝 DHDOPO 的 MWCNTs 在无水乙醇中具有良好的分散性.
Multi-wall carbon nanotubes (MWCNTs)were oxidized by soaking in mixed acids and formed by ca-talysis pyrolysis,and then were functionalized by the derivatives of DOPO.The characterization of structure and surface was carried out by infrared spectroscopy,transmission electron microscopy,scanning electron mi-croscopy,rmogravimetric analyzer,UV-visible spectrophotometer photometer and settlement of experiments. Relative grafting ratio of DHDOPO was estimated on the surface of carbon nanotubes.The dispersion of multi-walled carbon nanotubes in ethanol was studied.The results show that the surface of MWCNTs form carboxyl after soaking in mixed acids.The content of the derivatives of DOPO grafted onto the MWCNT surface reached 5 1%.Mixed acid oxidation and surface grafting DHDOPO of MWCNTs have good dispersion in anhydrous etha-nol.
参考文献
| [1] | lijima S .Helical microtubules of graphitic carbon[J].Na-ture,1991,354(11):56. |
| [2] | Thomas J Webster;Michael C Waid;Janice L McKenzie .Nano-biotechnology: carbon nanofibres as improved neural and orthopaedic implants[J].Nanotechnology,2004(1):48-54. |
| [3] | 田立国,陈德敏.碳纳米管表面活性化及其在生物医药中的应用[J].功能材料,2009(02):177-180. |
| [4] | Kin-Tak Lau;San-Qiang Shi;Li-Min Zhou;Hui-Ming Cheng .Micro-hardness and Flexural Properties of Randomly-oriented Carbon Nanotube Composites[J].Journal of Composite Materials,2003(4):365-376. |
| [5] | Sudong Yang;Xiaogang Zhang;Hongyu Mi;Xiangguo Ye .Pd nanoparticles supported on functionalized multi-walled carbon nanotubes (MWCNTs) and electrooxidation for formic acid[J].Journal of Power Sources,2008(1):26-32. |
| [6] | Bi S;Su X J;Hong G L et al.Investigations on oxidation cutting and dispersibility of multi-walled carbon nanotube[J].NEW CARBON MATERIALS,2014,29(2):109-117. |
| [7] | 王川,邢哲,夏延致,隋坤艳,纪全,孔庆山.多壁碳纳米管的处理及其在芳纶1313中的分散[J].功能材料,2009(02):325-327. |
| [8] | M. Ciesielski;A. Schafer;M. Doring .Novel efficient DOPO-based flame-retardants for PWB relevant epoxy resins with high glass transition temperatures[J].Polymers for advanced technologies,2008(6):507-515. |
| [9] | 俞科静,张洁,郏余晨,曹海建,钱坤.CNTs的表面改性及其在环氧树脂复合材料中的应用[J].功能材料,2012(22):3131-3134,3138. |
| [10] | Yana Bykov;Sebastian Wagner;Olaf Walter .Synthesis of NewDibenzo[c.e][1,2]oxaphosphorine 2-oxideContaining Diols Based on Diethanolamine[J].Heteroatom Chemistry,2012(2):146-153. |
| [11] | 李玉臻,杨宏宇.含二羟基DOPO衍生物阻燃改性环氧树脂的制备与热性能研究[J].火灾科学,2013(02):77-83. |
| [12] | A.G.Ryabenko;T.V.Dorofeeva;G.I.Zvereva .UV-VIS-NIR spectroscopy study of sensitivity of single-wall carbon nanotubes to chemical processing and Van-der-Waals SWNT/SWNT interaction.Verification of the SWNT content measurements by absorption spectroscopy[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(8/9):1523-1535. |
| [13] | Linqin Jiang;Lian Gao;Jing Sun .Production of aqueous colloidal dispersions of carbon nanotubes[J].Journal of Colloid and Interface Science,2003(1):89-94. |
| [14] | Ma HY;Tong LF;Xu ZB;Fang ZP .Functionalizing carbon nanotubes by grafting on intumescent flame retardant: Nanocomposite synthesis, morphology, rheology, and flammability[J].Advanced functional materials,2008(3):414-421. |
| [15] | Zhao G;Liu K Z;Lin S et al.Application of a carbon nanotube modified electrode in anodic stripping voltam-mctry for determination of trace amounts of 6-benzy 1 aminopurine[J].Microchimica Acta,2003,143(4):255-260. |
| [16] | Jeffrey L.Bahr;Edward T.Mickelson;Michael J.Bronikowski;Richard E.Smalley;James M.Tour .Dissolution of small diameter single-wall carbon nanotubes in organic solvents?[J].Chemical communications,2001(2):193-194. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%