High- and low-molecular-weight lignosulfonates and Kraft lignins as oil/water-emulsion stabilizers studied by means of electrical conductivity

Gundersen, Stig Are; Sjöblom, Johan

doi:10.1007/s003960050409

Cited by 53 publications

(37 citation statements)

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“…81,82 Due to the ionizable groups, both lignosulfonates and Kraft lignin act as polyelectrolytes and may stabilize emulsions through repulsion via an electrical double layer. 66,67,83,84 Unsubstituted regions of lignin remain nonpolar and hydrophobic, and they are likely to induce adsorption at dispersion interfaces. 85 Notably, Kraft lignin exhibits higher surface-activity, which can be explained by its lower polyelectrolytic expansion and degree of sulfonation compared to lignosulfonates.…”

Section: Amphiphilic Surfactantsmentioning

confidence: 99%

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Mikkonen

2020

Green Chem.

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Wood biomass is an abundant renewable source of materials, but due to the accelerating depletion of natural resources, it is important to explore new ways to use it in a more sustainable manner. Modern technologies enable the recovery and valorization of the main components of wood-namely, cellulose, lignin, and hemicelluloses-contributing to sustainability. However, the method of isolation and resulting structure and purity of lignocellulosic materials determine their functionality and applicability. This review discusses the properties of all three main wood-based compounds that can stabilize emulsions, a class of industrial dispersions that are widely used in life science applications and chemicals. Due to the multibillion-dollar annual market for hydrocolloids, the food, pharmaceutical, cosmetic, coating, and paint industries are actively seeking new sustainable emulsion stabilizers that fulfill the demanding requirements regarding safety and functionality. Wood-derived stabilizers facilitate various mechanisms involved in emulsion stabilization: (1) development of amphiphilic structures that decrease interfacial tension, (2) stabilization of interfaces by particles according to the Pickering theory, and (3) increase in the viscosity of emulsions' continuous phase. This review presents pathways for treating cellulose, lignin, and hemicelluloses to achieve efficient stabilization and provides suggestions for their broad use in emulsions.

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Section: Amphiphilic Surfactantsmentioning

confidence: 99%

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Mikkonen

2020

Green Chem.

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“…The presence of this structure modifies both the equilibrium and the transport properties of oil-water systems and should be included in the interpretation of oil-water interfacial properties. The possibility of liquid crystal stabilization of crude oil and water emulsions was suggested by Sjöblom and coworkers, (9) who published extensively on crude oil emulsions (10)(11)(12)(13)(14). Liquid crystal role in emulsion stabilization has been studied in equilibrium systems (15)(16)(17)(18)(19)(20)(21).…”

Section: Introductionmentioning

confidence: 97%

Sandwich Structures at Oil–Water Interfaces under Alkaline Conditions

Horváth‐Szabó

Czarnecki

Masliyah

2002

Journal of Colloid and Interface Science

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“…This would imply the possibility of LLC stabilization of O/W or W/O emulsions. The possibility of LLC stabilization of crude oil and water emulsions was emphasized by Sjöblom and co-workers (13), who published extensively on crude oil emulsions (14)(15)(16)(17)(18).…”

Section: Introductionmentioning

confidence: 99%