Brounstein Zachary, Yeager Chris M, Labouriau Andrea
Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Department of Nanoscience and Microsystems Engineering, University of New Mexico, Albuquerque, NM 87131, USA.
Polymers (Basel). 2021 Feb 15;13(4):580. doi: 10.3390/polym13040580.
In addition to possessing the desirable properties of being a biodegradable and biocompatible polymer fabricated from renewable resources, poly (lactic acid) (PLA) has useful mechanical and thermal attributes that has enabled it to be one of the most widely-used plastics for medicine, manufacturing, and agriculture. Yet, PLA composites have not been heavily explored for use in 3D-printing applications, and the range of feasible materials for the technology is limited, which inhibits its potential growth and industry adoption. In this study, tunable, multifunctional antimicrobial PLA composite filaments for 3D-printing have been fabricated and tested via chemical, thermal, mechanical, and antimicrobial experiments. Thermally stable antimicrobial ceramics, ZnO and TiO, were used as fillers up to 30 wt%, and poly (ethylene glycol) (PEG) was used as a plasticizer to tune the physical material properties. Results demonstrate that the PLA composite filaments exhibit the thermal phase behaviors and thermal stability suitable for 3D-printing. Additionally, PEG can be used to tune the mechanical properties while not affecting the antimicrobial efficacy that ZnO and TiO imbue.
聚乳酸（PLA）除了具有由可再生资源制成的可生物降解和生物相容性聚合物的理想特性外，还具有有用的机械和热属性，这使其成为医学、制造业和农业中使用最广泛的塑料之一。然而，PLA复合材料在3D打印应用中的探索并不深入，该技术的可行材料范围有限，这抑制了其潜在的增长和行业应用。在本研究中，通过化学、热、机械和抗菌实验制备并测试了用于3D打印的可调谐、多功能抗菌PLA复合长丝。热稳定抗菌陶瓷ZnO和TiO用作填料，用量高达30 wt%，聚乙二醇（PEG）用作增塑剂来调节材料的物理性能。结果表明，PLA复合长丝表现出适合3D打印的热相行为和热稳定性。此外，PEG可用于调节机械性能，同时不影响ZnO和TiO赋予的抗菌效果。
Zotero 插件
