Inorganic Chemistry

Insulating Composites Made from Sulfur, Canola Oil, and Wool


An insulating composite was made from the sustainable building blocks wool, sulfur, and canola oil. In the first stage of the synthesis, inverse vulcanization was used to make a polysulfide polymer from the canola oil triglyceride and sulfur. This polymerization benefits from complete atom economy. In the second stage, the powdered polymer is mixed with wool, coating the fibers through electrostatic attraction. The polymer and wool mixture is then compressed with mild heating to provoke S-S metathesis in the polymer, which locks the wool in the polymer matrix. The wool fibers impart tensile strength, insulating properties, and flame resistance to the composite. All building blocks are sustainable or derived from waste and the composite is a promising lead on next-generation insulation for energy conservation.


Thumbnail image of Manuscript.pdf

Supplementary material

Thumbnail image of Supplementary Information.pdf
Supplementary Information
Thumbnail image of Video S1 - polymer UL-94.mp4
Video S1 - polymer UL-94
Thumbnail image of Video S2 - polymer-wool composite UL-94.mp4
Video S2 - polymer-wool composite UL-94