Microalgae <i>Chlorella vulgaris</i> and kraft lignin stabilized cellulosic wet foams for camouflage

Forsman, Nina; Lohtander, Tia; Jordan, Juha; Huynh, Ngoc; Seppälä, Ari; Laaksonen, Päivi; Franssila, Sami; Österberg, Monika

doi:10.1039/d1sm01719e

Cited by 5 publications

(1 citation statement)

References 65 publications

(92 reference statements)

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“…Today non-degradable synthetic foams are widely used, but for environmental and sustainability reasons cellulose foams has a future. Wet nanocellulose foam stabilized with microalgae and kraft lignin have been investigated for camouflage purposes [50].…”

Section: Introductionmentioning

confidence: 99%

Optical studies of white organic materials for camouflage applications in arctic environments

Åkerlind

Hallberg

Järrendahl

2022

Target and Background Signatures VIII

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Important properties for camouflage materials can be summarized in six criteria: (1) spectrally selective reflectance, (2) low gloss, (3) low degree of polarization, (4) low infrared emissivity, (5) non-destructive effect on radar properties and (6) color adaptivity. We have studied a collection of natural materials for potential use as camouflage surfaces for the arctic region. The four first camouflage criteria are analyzed using spectrometry, scatterometry and spectroscopic ellipsometry techniques. The materials involved in the study are diffuse white nature-inspired surfaces: Cuticles of the beetle Cyphochilus insulanus, and foams of freeze-casted cellulose nanofibrils. We present data that partly fulfills the addressed camouflage criteria. An adequate reflectance is achieved in the spectral range of 400–1600 nm for both samples. Scattering data show that near-Lambertian properties are achieved at 633 nm for both surfaces but at 1550 nm for only the beetle cuticle. The degree of polarization is low for unpolarized light incident near the surface normal for both surfaces.

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Section: Introductionmentioning

confidence: 99%

Optical studies of white organic materials for camouflage applications in arctic environments

Åkerlind

Hallberg

Järrendahl

2022

Target and Background Signatures VIII

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Flexible, durable, and anti-fouling nanocellulose-based membrane functionalized by block copolymer with ultra-high flux and efficiency for oil-in-water emulsions separation

Cui

et al. 2022

Nano Res.

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Recent progress and future prospects on aqueous foams stabilized based on clay minerals

Duan

Zhu

et al. 2023

Applied Clay Science

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Microalgae Chlorella vulgaris and kraft lignin stabilized cellulosic wet foams for camouflage

Abstract: Lignocellulosics, microalgae, and SDS were used to generate stable and colored wet foams intended for camouflage use. It was found that the addition of microalgae increased the foam stability. The hyperspectral and thermal properties were studied.

Cited by 5 publications

References 65 publications

Optical studies of white organic materials for camouflage applications in arctic environments

Optical studies of white organic materials for camouflage applications in arctic environments

Flexible, durable, and anti-fouling nanocellulose-based membrane functionalized by block copolymer with ultra-high flux and efficiency for oil-in-water emulsions separation

Recent progress and future prospects on aqueous foams stabilized based on clay minerals

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