Eco-efficient pickering foams: leveraging sugarcane waste-derived cellulose nanofibres

文献情報

出版日 2023-11-03

DOI 10.1039/D3TA04917E

インパクトファクター 12.732

著者

Nasim Amiralian, Sandya S. A. Athukoralalage

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要旨

Foams, known for their diverse material properties, are extensively utilised in fields ranging from food and cosmetics to environmental remediation and mineral processing. Stable foam formation typically requires surface-active substances, such as surfactants, to lower the surface free energy at the air–liquid interface. However, many current foam stabilisers pose environmental risks due to toxicity and non-biodegradability. This study presents cellulose nanofibers (CNF) derived from agricultural waste, as an eco-friendly foam stabiliser. The less dense structure of non-wood biomass yields high aspect ratio and flexible nanofibers, positioning agricultural waste-derived nanofibers as a potential foam stabilising agent. To achieve varying foam stabilities for different applications, the foam generation and stability of 0.1 wt% CNF with different amounts of octylamine (OA) are examined. Insights into the stabilising effect of CNF and OA are drawn from the interfacial tension and dilational rheology of OA and CNF adsorbed layers. Results showed that foam stability peaked with OA concentration at 630 ppm; beyond this, stability decreased because of nanofiber aggregation. The enhanced foam stability is attributed to the increased surface hydrophobicity with OA concentration, which promotes nanofiber adsorption at the air–water interface and improves the interfacial tension and dilational viscoelasticity. Overall, this study provides valuable insights into using agricultural waste-derived nanocellulose as an efficient, eco-friendly, and economical stabilising agent for wet foams.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Eco-efficient pickering foams: leveraging sugarcane waste-derived cellulose nanofibres

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Journal of Materials Chemistry A

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