Carbon fiber reinforced epoxy is the most widely used carbon fiber composite and has superior performance. However, the growing demand for carbon fiber reinforced epoxy is leading to enormous consumption of petroleum products and persistent disposal problems, which are highly polluting and affect sustainable human development. To address this dilemma, recyclable carbon fiber composites were produced in this thesis using fully bio-based dynamically crosslinked matrices from natural camphor acid (CPA) and epoxidized soybean oil (ESO) without additional chemical modification. Because the dynamic CPA / ESO networks could be topologically rearranged above Transesterification reactions (TERs), the composite laminates had useful performance at room temperature and were easily recycled, self-adhesive, and repaired at elevated temperatures. In addition, the carbon fibers could be completely recycled above Degradation of the composites using ethylene glycol, with the recycled fibers retaining almost 100% of the mechanical properties of new samples. As part of this work, for the first time, recyclable carbon fiber composites were produced using fully bio-based epoxy matrices, which offered an environmentally friendly and practical strategy for the development of recyclable eco-materials.

Graphic Summary: Recyclable, reprocessable, self-adhesive, and repairable carbon fiber reinforced polymers using fully bio-based matrices of camphoric acid and epoxidized soybean oil


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