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> There’s one major hurdle with any degradable plastic material of course: what if it comes into contact with the catalyst for its destruction before you want i
by barbazoo 2y ago
> There’s one major hurdle with any degradable plastic material of course: what if it comes into contact with the catalyst for its destruction before you want it to? A plastic cup is no good if certain liquids can dissolve it, after all.
> In this case, the team found that applying hydrophobic coatings prevented any early breaking down of the material. When you eventually want to dispose of it, a simple scratch on the surface was enough to let the saltwater back in, allowing the material to dissolve just as quickly as the non-coated sheets.
- Ancalagon 2y agoIs the coating made of PFAS, or wax?
- 6177c40f 2y agoParylene C, a chlorocarbon: [1] > Derivatives of parylene can be obtained by replacing hydrogen atoms on the phenyl ring or the aliphatic bridge by other functional groups. The most common of these variants is parylene C, which has one hydrogen atom in the aryl ring replaced by chlorine. [2] [1] https://www.science.org/doi/10.1126/science.ado1782 https://www.science.org/doi/10.1126/science.ado1782 [2] https://en.wikipedia.org/wiki/Parylene#Permeability https://en.wikipedia.org/wiki/Parylene#Permeability
- pas 2y agoit seems there's even a biodegradable version https://www.kit-technology.de/en/technology-offers/details/705 https://www.kit-technology.de/en/technology-offers/details/7...