Seaweave: compostable seaweed-based biocomposite fibres for inner liner applications

Technology

In development

University

SeaWeave offers a sustainable, compostable alternative to polyolefin liners using seaweed-based biocomposite fibres. Combining seaweed-based thermoplastic starch and PLA, it ensures hydrophilicity, strength, and premium handfeel, ideal for infant-facing materials.

Overview

SeaWeave introduces an innovative approach to sustainable inner liner materials by utilizing seaweed-based biocomposite fibers. This solution marries the natural benefits of seaweed-based thermoplastic starch (swTPS) with polylactic acid (PLA) to create a compostable, high-performance spunbond nonwoven. Offering hydrophilicity and a soft, cool feel from swTPS, coupled with strength and durability from PLA, SeaWeave is designed for applications needing both comfort and environmental responsibility, such as infant diapers and personal care products.

Technical specifications

Material Composition: A compatibilised composite of seaweed-based thermoplastic starch (swTPS) and PLA
Key Features:
- Natural hydrophilicity and soft texture from swTPS
- Strength and thermal bonding from PLA
- Compostable and bio-based
- Rapid strike-through and breathability
Process: Melt-spun into continuous filaments with stable melt flow and clean draw, optimized with a biobased compatibiliser like citric acid
Spunbond Characteristics: Available in 15–20 gsm with tunable softness, fluid uptake, and breathability

Technology readiness level

Currently at Technology Readiness Level 4, SeaWeave has been validated for melt spinning and is undergoing pilot spunbond trials. Future steps include optimizing thermal calendering, conducting performance testing specific to diaper applications, and assessing compostability according to ASTM D6400 standards.

About Technological University of Shannon

Technological University of the Shannon (TUS) is a multi‑campus technological university spanning seven sites across Ireland’s Midlands and Midwest, combining applied research with strong industry engagement. Enterprise Ireland Technology Gateways on TUS campuses provide industry‑accessible labs, testbeds and prototyping with rapid routes to collaboration. A network of campus‑based enterprise and innovation centres offers incubation and co‑located collaboration space for startups and corporate R&D, while work placements are embedded across programmes and coordinated centrally for employers. Research is supported by national agencies such as Science Foundation Ireland, Enterprise Ireland and the Irish Research Council, alongside European funding programmes. A dedicated Knowledge Transfer and Commercialisation Office streamlines IP, licensing and spin‑out support.

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Declan Colbert

Principal Investigator, Technological University of Shannon

Looking for

Co-developmentSponsored researchLicensing

Industry applications

Absorbent hygiene productsPolymer compositesSustainable fabric development