Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy; University of Naples Federico II, Department of Materials and Production Engineering, P.le Tecchio 80, 80125 Naples, Italy.
Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Mostra d'Oltremare, Pad.20, V.le Kennedy 54, 80125 Naples, Italy.
J Colloid Interface Sci. 2019 Apr 1;541:367-375. doi: 10.1016/j.jcis.2019.01.086. Epub 2019 Jan 22.
In the last years, several cost-effective technologies have been investigated to functionalize textile substrates for large scale applications and industrial production. However, several limitations of currently used technologies still restrict the capability to form functional coatings finely controlling the textile surface properties and topographic structure of the coatings at sub-micrometric scale.
Herein, we introduced a new non-conventional electrofluidodynamic technology - based on the use of electrostatic forces to polymer/composite solutions - for the application onto textile fabrics of functional coatings. With respect to particle/fibrous coatings usually applied through conventional electrospraying/electrospinning processes, the proposed approach is able to realize homogeneous and continuous coatings by a one-step process, imparting tailored functionalities to the textiles surfaces through the use of customized experimental setups.
We proved that this process can be successfully used to realize functional coatings based on a bioderived polymer, namely polylactic acid (PLA), on commercial woven polyamide (PA) fabrics. In addition, due to the usage of graphene derivatives or photochromic dyes in combination with PLA, the applied coatings are able to confer peculiar functionalities (i.e., electrical conductivity, photochromic properties, etc.) to polyamide fabrics, as proved by SEM, conductivity and UV irradiation measurements, for innovative applications in smart textiles, e-health and wearable electronics.
在过去的几年中，已经研究了几种具有成本效益的技术，以将纺织基底功能化，用于大规模应用和工业生产。然而，目前使用的技术仍然存在一些限制，限制了精细控制纺织表面性能和涂层的亚微米级拓扑结构的能力，以形成功能性涂层。
本文介绍了一种新的非常规电流体动力学技术 - 基于使用静电力将聚合物/复合材料溶液 - 应用于纺织织物的功能性涂层。与通常通过常规静电喷涂/静电纺丝工艺施加的颗粒/纤维涂层相比，所提出的方法能够通过一步工艺实现均匀连续的涂层，通过使用定制的实验装置为纺织品表面赋予定制的功能。
我们证明，该工艺可成功地用于在商业机织聚酰胺（PA）织物上实现基于生物衍生聚合物（即聚乳酸（PLA））的功能性涂层。此外，由于在 PLA 中结合使用了石墨烯衍生物或光致变色染料，所施加的涂层能够赋予聚酰胺织物特殊的功能（即导电性、光致变色等），这通过 SEM、导电性和紫外线照射测量得到了证明，可用于智能纺织品、电子医疗和可穿戴电子等创新应用。
