The Skoog Flocculant: Taming the Microplastic Tide through Proactive Source Point Protection

The Skoog Flocculant, formally known as Skoog Open Marine Proactive Flocculant (SOMPF), is a materials science system designed to transform the physical behavior of microplastics in marine environments.

Developed by inventor Göran Skoog, the technology focuses on proactive source point protection by programming plastic materials to undergo an ionic strength-dependent response in seawater.

The system is provided as an open-source technical solution that is free to use and implement under the Creative Commons CC BY 4.0 Attribution International license.

Technical Application and Process

The system is applied industrially via a spray tunnel with electrostatic charging immediately after the primary molding process, such as extrusion or casting. By utilizing residual heat between 60-120°C, the solution undergoes controlled thermal activation and surface diffusion. This creates a functional surface zone on a micrometer scale (1-10 µm) that is long-term integrated and resistant to mechanical abrasion throughout the product's life cycle.

The core of the technology involves surface-anchored amphiphilic block copolymers. These consist of hydrophobic segments for fixation and hydrophilic charged segments that respond to the ionic strength of seawater.

While the material remains passive in freshwater or urban environments, the natural salinity of the ocean acts as a trigger for the aggregation mechanism through charge screening and polymer bridging.

Aggregation Mechanism and Risk Reduction

The Skoog Flocculant is most effective at the moment of fragmentation, which is identified as the primary aggregation zone. When the treated material breaks down, new functional surfaces are exposed while the fragments are still at their maximum local concentration.

This maximizes the probability of immediate polymer bridging and hetero-aggregation, preventing the plastic from dispersing as microscopic dust.

The system also benefits from biofilm synergy, as the modified surface energy accelerates the colonization of bacteria. These organisms produce Extracellular Polymeric Substances (EPS), a biological "glue" that stabilizes the clusters and binds them to marine snow.

Bio-Physical Barriers and Environmental Fate

By inducing aggregation into sizes exceeding 50 µm, the technology creates a bio-physical barrier that significantly reduces bioavailability. These macroscopic clusters are too large for endocytosis (cellular uptake), preventing the particles from penetrating cell membranes or migrating into the tissue of marine organisms.

The eventual fate of the aggregates is determined by their density: higher-density materials like PVC are directed toward faster sedimentation, while lower-density materials like PE form floating macro-clusters. Both outcomes simplify mechanical separation and reduce the residence time of plastic fragments in biologically active zones.

Documentation and Contact

Further technical validation is detailed in the official documentation.

Official Website: https://www.skoogmarine.com

Technical Report DOI: https://doi.org/10.5281/zenodo.20005019

Contact:

Göran Skoog

goran@skoogmarine.com

License:

Free to use and implement under Creative Commons CC BY 4.0 Attribution International