Hierarchically Porous Silk/Activated-Carbon Composite Fibres for Adsorption and Repellence of Volatile Organic Compounds

Molecules

Jet-SingM. Lee¹  Michael Dennis¹  AledD. Roberts²  MartinW. Smith²  NigelS. Scrutton³  JonnyJ. Blaker³  Adrián Magaz⁴ 

[1] Henry Royce Institute, The University of Manchester, Manchester M13 9PL, UK;;Bio-Active Materials Group, Department of Materials &Defence Science and Technology Laboratory (Dstl), Porton Down, Salisbury SP4 0JQ, UK;Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan;

关键词: porous fibres;    activated carbon;    ice-templating;    ice segregation induced self-assembly;    silk fibroin;    wet spinning;    solution blow spinning;    freeze casting;   

DOI  :  10.3390/molecules25051207

来源: DOAJ

【 摘 要 】

Fabrics comprised of porous fibres could provide effective passive protection against chemical and biological (CB) threats whilst maintaining high air permeability (breathability). Here, we fabricate hierarchically porous fibres consisting of regenerated silk fibroin (RSF) and activated-carbon (AC) prepared through two fibre spinning techniques in combination with ice-templating—namely cryogenic solution blow spinning (Cryo-SBS) and cryogenic wet-spinning (Cryo-WS). The Cryo-WS RSF fibres had exceptionally small macropores (as low as 0.1 µm) and high specific surface areas (SSAs) of up to 79 m²·g⁻¹. The incorporation of AC could further increase the SSA to 210 m²·g⁻¹ (25 wt.% loading) whilst also increasing adsorption capacity for volatile organic compounds (VOCs).

【 授权许可】

Unknown