Guo Jianjun, Yang Bo, Ma Qiang, Fometu Sandra Senyo, Wu Guohua
College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212100, China.
College of Agriculture, Anshun University, Anshun 561000, China.
Polymers (Basel). 2021 Nov 15;13(22):3937. doi: 10.3390/polym13223937.
The distinctive mechanical and photothermal properties of Molybdenum sulfide (MoS) have the potential for improving the functionality and utilization of silk products in various sectors. This paper reports on the preparation of regenerated silk fibroin/molybdenum disulfide (RSF/MoS) nanoparticles hybrid fiber with different MoS nanoparticles contents by wet spinning. The simulated sunlight test indicated that the temperature of 2 wt% RSF/MoS nanoparticles hybrid fibers could rise from 20.0 °C to 81.0 °C in 1 min and 98.6 °C in 10 min, exhibiting good thermal stability. It was also demonstrated that fabrics made by manual blending portrayed excellent photothermal properties. The addition of MoS nanoparticles could improve the toughness of hybrid fibers, which may be since the mixing of MoS nanoparticles hindered the self-assembly of β-sheets in RSF solution in a concentration-dependent manner because RSF/MoS nanoparticles hybrid fibers showed a lower β-sheet content, crystallinity, and smaller crystallite size. This study describes a new way of producing high toughness and photothermal properties fibers for multifunctional fibers' applications.
硫化钼（MoS）独特的机械和光热性能具有改善丝绸产品在各个领域的功能和利用率的潜力。本文报道了通过湿法纺丝制备不同MoS纳米颗粒含量的再生丝素蛋白/二硫化钼（RSF/MoS）纳米颗粒复合纤维。模拟阳光测试表明，含2 wt% MoS纳米颗粒的复合纤维温度在1分钟内可从20.0℃升至81.0℃，10分钟内升至98.6℃，表现出良好的热稳定性。还证明了通过手工混合制成的织物具有优异的光热性能。添加MoS纳米颗粒可以提高复合纤维的韧性，这可能是因为MoS纳米颗粒的混合以浓度依赖的方式阻碍了RSF溶液中β-折叠的自组装，因为RSF/MoS纳米颗粒复合纤维显示出较低的β-折叠含量、结晶度和较小的微晶尺寸。本研究描述了一种生产具有高韧性和光热性能纤维以用于多功能纤维应用的新方法。
