Conducting fibers with improved properties and functionalities are needed for diverse applications. Here we report the fabrication of core/shell conductive Dacron fibers by dip-coating method through originating from multi-walled carbon nanotubes (MWCNTs) coated on polyester fibers. The annealing process was conducted to enhance interaction between the conductive shell and polyester core as well as within the MWCNTs network. The properties of two kinds of MWCNTs dispersions and the electrical properties of conductive fibers were studied, respectively. The results show that both MWCNTs-polyurethane resin (MWCNTs-WPU) dispersion and MWCNTs-acrylic resin (MWCNTs-PAA) dispersion present a typical characteristic of pseudo-plastic fluid and an excellent wetting ability to polyester fibers. The ultimate tensile stress and elongation at break for the MWCNTs-PAA coated fiber are 261 MPa and 25.43%. The ultimate tensile stress and the elongation at break are both increasing with the increasing of MWCNTs contents, due to the strong interface bonding ability between the conductive shell and polyester core and strengthen the MWCNTs network. The electrical resistance of the obtained fibers can be controlled in the range from 732 to 30 Ω/cm by changing MWCNTs content, dipping times and annealing temperature. It was found that it is able to light a LED. All results suggest that the conductive fibers embody a good synergy effect of carbon nanotubes and polymers. Therefore, the fabricated conductive fibers have a widely prospect for being applied in the field of flexible electronics.

对于各种应用，需要具有改善的特性和功能的导电纤维。在这里，我们报告了通过浸涂法制造核/壳导电涤纶纤维的方法，该方法是通过将聚酯纤维上涂覆的多壁碳纳米管（MWCNT）引入而实现的。进行退火工艺以增强导电壳与聚酯核之间以及MWCNTs网络内部的相互作用。分别研究了两种MWCNTs分散体的性能和导电纤维的电性能。结果表明，MWCNTs-聚氨酯树脂（MWCNTs-WPU）分散体和MWCNTs-丙烯酸树脂（MWCNTs-PAA）分散体均表现出假塑性流体的典型特性，并且具有优异的对聚酯纤维的润湿能力。MWCNTs-PAA涂层纤维的极限拉伸应力和断裂伸长率分别为261 MPa和25.43％。最终拉伸应力和断裂伸长率均随着MWCNTs含量的增加而增加，这归因于导电壳层与聚酯核之间强大的界面键合能力并增强了MWCNTs网络。通过改变MWCNT的含量，浸渍时间和退火温度，可以将所得纤维的电阻控制在732至30Ω/ cm的范围内。发现它能够点亮LED。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。最终拉伸应力和断裂伸长率均随着MWCNTs含量的增加而增加，这归因于导电壳层与聚酯核之间强大的界面键合能力并增强了MWCNTs网络。通过改变MWCNT的含量，浸渍时间和退火温度，可以将所得纤维的电阻控制在732至30Ω/ cm的范围内。发现它能够点亮LED。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。最终拉伸应力和断裂伸长率均随着MWCNTs含量的增加而增加，这归因于导电壳层与聚酯核之间强大的界面键合能力并增强了MWCNTs网络。通过改变MWCNT的含量，浸渍时间和退火温度，可以将所得纤维的电阻控制在732至30Ω/ cm的范围内。发现它能够点亮LED。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。由于导电壳层和聚酯芯之间的界面粘合能力强，并增强了MWCNTs网络。通过改变MWCNT的含量，浸渍时间和退火温度，可以将所得纤维的电阻控制在732至30Ω/ cm的范围内。发现它能够点亮LED。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。由于导电壳层和聚酯芯之间具有很强的界面粘合能力，并增强了MWCNTs网络。通过改变MWCNT的含量，浸渍时间和退火温度，可以将所得纤维的电阻控制在732至30Ω/ cm的范围内。发现它能够点亮LED。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。所有结果表明，导电纤维体现了碳纳米管和聚合物的良好协同作用。因此，所制备的导电纤维在柔性电子领域具有广阔的应用前景。