This work reports the solvent-soluble multi-walled carbon nanotubes (MWCNTs), which can be used for the fabrication of ring-opening metathesis polymerization (ROMP)-based nanocomposites by solution casting technique. As the first and most important step of the solution casting technique, the excellent dispersibility of the MWCNTs in different solvents is achieved by the functionalization of the nanotube surface with norbornene oligomers. The norbornene-functionalized MWCNTs (nMWCNTs) have outstanding dispersion stability in water, tetrahydrofuran (THF), acetone, and ethanol, especially the maximum nanotube concentration of 3.9 mg/mL in THF. The incorporation of nMWCNTs into poly(5-ethylidene-2-norbornene) (poly(ENB)) by solution casting technique results in significant improvements in the mechanical properties over the neat poly(ENB) and the pristine MWCNT-reinforced poly(ENB) nanocomposites. The route developed here not only avoids the dramatic increase of the viscosity occurring in the bulk polymerization but also provides the feasibility of high loadings of MWCNT reinforcements, consequently broadening the potential applications of ROMP-based nanocomposites.

这项工作报告了可溶于溶剂的多壁碳纳米管（MWCNT），可用于通过溶液浇铸技术制造基于开环易位聚合（ROMP）的纳米复合材料。作为溶液流延技术的第一个也是最重要的步骤，通过用降冰片烯低聚物对纳米管表面进行官能化，可以实现MWCNT在不同溶剂中的优异分散性。降冰片烯官能化的MWCNT（nMWCNT）在水，四氢呋喃（THF），丙酮和乙醇中具有出色的分散稳定性，尤其是在THF中最大纳米管浓度为3.9 mg / mL。通过溶液浇铸技术将nMWCNT掺入聚（5-亚乙基-2-降冰片烯）（poly（ENB））中，与纯聚（ENB）和原始MWCNT增强的聚（ENB）相比，机械性能得到了显着改善。纳米复合材料。此处开发的路线不仅避免了本体聚合过程中发生的粘度急剧增加，而且还提供了高负载MWCNT增强剂的可行性，因此拓宽了基于ROMP的纳米复合材料的潜在应用范围。