Borregaard offers stabilisers based on sustainable and renewable raw materials for wax, AKD and other oil-in-water emulsions.
Bio-based stabilisers for oil-in-water emulsions
The structure of our bio-based additives differs significantly from the linear structure common to most synthetic emulsifiers. Surfactants and emulsifiers are designed to lower the interfacial tension between oil and water so that emulsion droplets can readily form.
The split between the lipophilic and hydrophilic part of the biopolymer molecules is less pronounced than for surfactants. Therefore, our biopolymers will not form micelles and will reduce surface tension in a linear manner, reaching a minimum of 40-50 mN/m at concentrations relevant for most practical emulsion applications.
- Versatility - high adsorption affinity for a wide range of hydrophobic and hydrophilic materials.
- Stability - tolerant to mechanical stress, temperature fluctuations, pH and electrolyte contamination.
- Sustainable - 100% bio-based from renewable sources.
- Safe - REACH exempt, certified in several FDA applications for food contact.
Laboratory work with wax emulsions on temperature stability
A comparative study of different grease formulations defined EP and AW properties of Pionera LUBE 10 compared to Molybdenum bisulfide (MoS2).
Bio-based stabiliser performance for wax emulsions
Shear stability of Borregaard biopolymers vs non-ionic emulsifier in 48% slack wax emulsions.
more on emulsions
Why do emulsions destabilise in storage?
The most important property of any emulsion system is its stability. Several different mechanisms exist by which an unstable emulsified state will seek equilibrium.
How to apply our bio-based emulsion stabilisers
Addition rates range from less than 1% to more than 10%, depending on the internal phase ratio, product, water quality and performance criteria. More than 70% by weight of oil can be used.