Carbon Nanotubes−Polypropylene Nanocomposites for Electrostatic Discharge Applications
Carbon Nanotubes−Polypropylene Nanocomposites for Electrostatic Discharge Applications
复制标题
DOI：
10.1021/ma901612w
复制
发表时间：
2009-10
期刊：
影响因子：
5.5
通讯作者：
Jong-Ill Lee;S. Yang;Hee‐Tae Jung
中科院分区：
文献类型：
--
作者：
Jong-Ill Lee;S. Yang;Hee‐Tae Jung
我们报告了一种新的方法，用于提高改性多壁碳纳米管（MWNTs）在聚丙烯（PP）基体中的静电放电应用的分散性。碳纳米管表面改性十八胺（ODA），通过CF 4等离子体辅助氟化和随后的烷基胺化。通过改变CF 4等离子体处理条件来控制MWNT表面上的氟基团的数量。傅里叶变换红外光谱（FT-IR）和X射线光电子能谱（XPS）研究表明，溶剂质量和反应温度对氟化MWNTs与十八胺（ODA）的反应有很大影响。所得的MWNT/PP纳米复合材料表现出更精细的分散在绝缘PP基体中比未改性的MWNT观察到，导致在低MWNT负载（2重量%）的电导率增强。此外，纳米复合材料的力学性能也得到了显著改善，储能模量（G′）和复数粘度（η*）显著提高。
We report a novel method for enhancing the dispersion of modified multiwalled carbon nanotubes (MWNTs) in a polypropylene (PP) matrix for electrostatic discharge applications. The surfaces of MWNTs were modified with octadecylamine (ODA) via CF4 plasma-assisted fluorination and subsequent alkylamination. The number of fluorine groups on the MWNT surface was controlled by varying the CF4 plasma treatment conditions. Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) revealed that reaction of the fluorinated MWNTs and octadecylamine (ODA) was strongly affected by solvent quality and reaction temperature. The resulting MWNT/PP nanocomposites exhibited a much finer dispersion in the insulating PP matrix than was observed for nonmodified MWNTs, leading to an enhanced electrical conductance at low MWNT loading (2 wt %). Furthermore, the nanocomposites showed significantly improved mechanical properties; the storage modulus (G′) and complex viscosity (η*) increased signifi...