Silk Protein Paper with In Situ Synthesized Silver Nanoparticles
Silk Protein Paper with In Situ Synthesized Silver Nanoparticles
复制标题
原位合成银纳米颗粒的丝蛋白纸
DOI：
10.1002/mabi.202000357
复制
发表时间：
2021
影响因子：
4.6
通讯作者：
Rajkhowa, Rangam
中科院分区：
文献类型：
--
作者：
Liang, Yujia;Tang, Bin;Sharma, Aarushi;Perera, Dinidu;Allardyce, Benjamin James;Ghosh, Sourabh;Schniepp, Hannes C.;Rajkhowa, Rangam
首次在从蓖麻蚕（Philosamia cynthia ricini，eri）和桑蚕（Bronx mori，桑葚）蚕丝纤维剥离的微纤化蚕丝（Microfibrillated silk，MFS）上原位合成了银纳米粒子（AgNPs）。该工艺快速（小时时间），不依赖于有害化学品，并生产出具有优异处理性能的坚固而灵活的AgNPs涂层MFS（MFS‐AgNPs）蛋白纸。这些都不能通过过去用于制造AgNPs丝系统的方法来实现。MFS牢固地结合AgNP，为NP提供良好的支撑和稳定性，导致强的耐洗性。与没有纳米颗粒的MFS纸相比，MFS-AgNP纸的机械性能基本上没有变化，除了在桑葚丝的情况下AgNP的浓度较高。与桑葚丝纸相比，具有或不具有AgNP的蓖麻丝纸的改善的拉伸性能可以归因于在蓖麻丝中实现的更高程度的原纤化及其固有的更高延展性。来自蓖麻蚕丝的MFS-AgNP也表现出强的抗菌活性。该研究为基于丝素纤维和功能纳米材料的智能蛋白质纸的开发提供了基础。
Silver nanoparticles (AgNPs) are in situ synthesized for the first time on microfibrillated silk (MFS) exfoliated from domesticatedPhilosamia cynthia ricini(eri) andBombyx mori(mulberry) silkworm silk fibers. The process is rapid (hours time), does not rely on harmful chemicals, and produces robust and flexible AgNPs coated MFS (MFS‐AgNPs) protein papers with excellent handling properties. None of these can be achieved by approaches used in the past to fabricate AgNPs silk systems. MFS bonds the AgNPs strongly, providing good support and stabilization for the NPs, leading to strong wash fastness. The mechanical properties of the MFS‐AgNPs papers largely do not change compared to the MFS papers without nanoparticles, except for some higher concentration of AgNPs in the case of mulberry silk. The improved tensile properties of eri silk papers with or without AgNPs compared to mulberry silk papers can be attributed to the higher degree of fibrillation achieved in eri silk and its inherent higher ductility. MFS‐AgNPs from eri silk also exhibit strong antibacterial activity. This study provides the basis for the development of smart protein papers based on silk fiber and functional nanomaterials.