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Future Island-Island Impact Cards:Rathlin Wool Rope
Summary
This practice-led design research project explored the feasibility of replacing polypropylene ropes used in maritime industries with natural wool ropes from the island of Rathlin, as a microplastic reduction strategy. Laboratory testing and lifecycle analysis informed the development of prototype ropes evaluated for strength and biodegradability.
ChallengePolypropylene ropes contribute significantly to marine contamination, shedding microplastics through wear and degradation. These particles persist in ocean ecosystems, harming marine life and entering the food chain. As synthetic materials, they do not biodegrade, leading to long-term pollution and raising urgent concerns about sustainability in maritime industries and practices.ApproachThe research employs a practice-led methodology, combining material testing, environmental analysis, and design innovation. It includes lab-based textile strength and durability trials, field testing in marine environments, and iterative prototyping. Collaborative engagement with fishers and maritime users ensures contextual relevance, while lifecycle assessment evaluates environmental impact and biodegradability.OutcomesOutputs include prototypes of 6–16 mm wool ropes made from home-grown Rathlin Blackface wool, performance data, and field trial reports. Outcomes demonstrate wool’s potential as a sustainable alternative to synthetic ropes, supporting local wool economies, reducing marine microplastic pollution, and informing policy and industry on biodegradable rope innovation.LearningsKey learnings include the potential of Rathlin wool as a biodegradable alternative that eliminates microplastic release in kelp farming. Insights reveal the need for improved treatments to enhance water resistance and durability, while highlighting the value of local, renewable resources in supporting circular design, ecosystem health, and sustainable aquaculture practices.ImpactThe project promotes sustainable aquaculture practices by showcasing wool as an eco-friendly alternative to plastic ropes in kelp farming, reducing microplastic pollution. Collaborating with farmers, agencies, and industry, it shares findings through workshops and publications, encouraging biodegradable material use, informing policy, and supporting a shift toward circular, regenerative marine practices.