Insulating Composites Made from Sulfur, Canola Oil, and Wool**

7. Clean energy 01 natural sciences 12. Responsible consumption 0104 chemical sciences
DOI: 10.1002/cssc.202100187 Publication Date: 2021-02-26T03:15:45Z
ABSTRACT
AbstractAn 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 was mixed with wool, coating the fibers through electrostatic attraction. The polymer and wool mixture were then compressed with mild heating to provoke S−S metathesis in the polymer, which locks the wool in the polymer matrix. The wool fibers imparted tensile strength, insulating properties, and reduced the flammability of 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.
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