Liu Chao-Xuan, Choi Jin-Woo
Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, LA 70803, USA.
Nanomaterials (Basel). 2012 Oct 26;2(4):329-347. doi: 10.3390/nano2040329.
The polymer nanocomposite used in this work comprises elastomer poly(dimethylsiloxane) (PDMS) as a polymer matrix and multi-walled carbon nanotubes (MWCNTs) as a conductive nanofiller. To achieve uniform distribution of carbon nanotubes within the polymer, an optimized dispersion process was developed, featuring a strong organic solvent-chloroform, which dissolved PDMS base polymer easily and allowed high quality dispersion of MWCNTs. At concentrations as high as 9 wt.%, MWCNTs were dispersed uniformly through the polymer matrix, which presented a major improvement over prior techniques. The dispersion procedure was optimized via extended experimentation, which is discussed in detail.
本工作中使用的聚合物纳米复合材料包含作为聚合物基体的弹性体聚二甲基硅氧烷（PDMS）和作为导电纳米填料的多壁碳纳米管（MWCNT）。为了使碳纳米管在聚合物中均匀分布，开发了一种优化的分散工艺，其特点是使用强有机溶剂——氯仿，它能轻松溶解PDMS基础聚合物并使MWCNT实现高质量分散。在高达9 wt.%的浓度下，MWCNT均匀分散于聚合物基体中，这相较于先前技术有了重大改进。通过大量实验对分散程序进行了优化，相关内容将详细讨论。
