• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymer bulletin >Electrospun polylactic acid non-woven mats incorporating silver nanoparticles
【24h】

Electrospun polylactic acid non-woven mats incorporating silver nanoparticles

机译：包含银纳米粒子的静电纺聚乳酸无纺垫

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This research is focused on the influence of silver nanoparticles (Ag-NPs) on the spinnability, morphology and wetting properties of electrospun polylactic acid (PLA) non-woven mats. PLA was electrospun from a chloroform solution (4.7 % g/g) and a filament and beads morphology was obtained, the filaments having an average diameter of 1.25 urn. Interestingly, water contact angle measurements showed a contact angle of 8 = 81°, an improvement relative to as-cast film which exhibited a contact angle of 6 = 54°. When AgNP, of ca. 12 nm size, were incorporated at 1 % g/g relative to PLA weight, to the 4.7 % PLA-chloroform solution, and electrospun, the filaments diameter was greatly reduced to an average of 0.65 um, and the density of polymer beads was also reduced. It is believed that the electric conductivity of silver enhanced the spinnability of the polymer solution. Strikingly, water contact angle measurements showed that the PLA/AgNP mats exhibited an angle as high 6 = 134°. Increasing the solution concentration to 6.7 % g/g still produced a beads-and-filament morphology, but with larger filament diameters, probably due to an increase in solution viscosity. When AgNP were added (again at 1 % g/g relative to PLA weight), the occurrence of beads diminished arid the average filament diameter decreased confirming the enhancement in spinnability by the AgNPs. Moreover, contact angles remained above 110° suggesting that the overall morphology is key to PLA's mats hydrophobic behavior and not only filament diameter.
机译：这项研究的重点是银纳米颗粒（Ag-NPs）对电纺聚乳酸（PLA）非织造垫的可纺性，形态和润湿性能的影响。用氯仿溶液（4.7％g / g）对PLA进行电纺丝，得到长丝和珠粒形态，长丝的平均直径为1.25微米。有趣的是，水接触角的测量结果显示接触角为8 = 81°，相对于铸膜的接触角为6 = 54°有所改善。当AgNP时，约为。将相对于PLA重量为1％g / g的12 nm尺寸加入到4.7％PLA-氯仿溶液中，并进行电纺，长丝直径大大减小至平均0.65 um，并且聚合物珠的密度也降低了。减少。据信，银的电导率增强了聚合物溶液的可纺性。引人注目的是，水接触角测量结果显示PLA / AgNP毡垫的夹角高达6 = 134°。将溶液浓度提高到6.7％g / g仍会产生珠和长丝形态，但长丝直径较大，这可能是由于溶液粘度增加所致。当添加AgNP（相对于PLA重量再次为1％g / g）时，珠粒的出现减少，平均长丝直径减小，这证实了AgNPs可纺性的增强。此外，接触角保持在110°以上，表明整体形态是PLA毡垫疏水行为的关键，而不仅是灯丝直径的关键。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号