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Turning Seaweed into Fabric: How Do We Make It Water-Resistant?

 
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Hey Community!

I'm excited to share that I'm working on a project to create fabric from seaweed! It involves using alginate, a wonderful natural polymer found in seaweed. Right now, I'm in the process of spinning the fibers together, and I've had great success overall! However, there's one challenge I'm facing: unfortunately, the fibers aren't water-resistant. Alginate tends to absorb a lot of water, and some of the other plasticizers I'm using, like PLC and Gelatin, do too. I would love to hear if anyone has suggestions on how to make these biomaterials water-resistant. Maybe there's something we can learn from mushroom leather?

Thanks for any information that you can provide me! I am also wondering if anyone knows about PLA plastics.

All my best!
Screenshot-2025-02-19-at-4.57.20-PM.png
Picture of the alginate material
Picture of the alginate material
 
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This sounds interesting - the only use of seaweed in fibres that I've heard of is in SeaCell® which uses a mixture containing regular cellulose from trees.  So, it's a viscose like the variations that use bamboo and other sources of cellulose and must use all sorts of 'nasty' chemicals.
We also have plastic bags that are said to compost - made from corn I think, but the biodegradable factor might be a drawback for your use.
 
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