用于敷料的柔性微电流织物的制备及性能

以涤纶无纺布为基布,通过丝网印刷技术制备以银、锌为正、负电极的具有不同图案的柔性微电流织物。分别探讨了图案形式、黏合剂含量和金属颗粒含量对涤纶基布电学性能的影响。结果表明:丝网印花技术能使基布表面均匀地负载银、锌微纳米颗粒,并形成清晰的图案效果,图案化基布表面形貌规整,银、锌基布电池以PBS作为电解质,能够在基布表面形成稳定的电势差和电流;当黏合剂水性聚丙烯乳液的质量分数为15%,银、锌微纳米颗粒的质量分数均为30%时,所制备条纹状图案的基布在48 h内能够维持0.96 V的电压,电流维持在43μA。基于已有研究,微电流在皮肤伤口表面形成的外源性电场可以有效调控伤口处细胞的迁移速度,从而促进伤口的愈合,所制备的微电流基布有望应用于生物电敷料领域。

Preparation and performance of flexible micro-current fabrics for dressing

Using a polyester nonwoven fabric as a based fabric,flexible micro-current fabrics with different patterns of silver and zinc as positive and negative electrodes are prepared by screen printing technique. The effects of pattern form,binder content and metal particle content on the electrical properties of polyester based fabric are discussed. The results show that screen printing technology could make silver and zinc micro-nano particle adhere to the surface of the based fabric uniformly and form a distinct pattern. The surface of the patterned based fabric is regular. Silver and zinc-based fabric batteries use PBS as an electrolyte to form a stable potential difference and current. When the mass fraction of the binder aqueous polypropylene emulsion is 15% and the mass fraction of silver and zinc metal micro-nano particles is 30%respectively,the voltage and current of the prepared striped pattern based fabric could maintain 0.96 V and 43 μA within 48 h,respectively.Research have shown that the exogenous electric field formed by micro-current on the surface of skin wound could effectively regulate the migration rate of cells at the wound and promote the healing of wounds. Therefore,the micro-current based fabric prepared is expected to be applied in the field of bio-electric dressing.