Synthesis of a Crosslinked Epoxy Resin Medallion in the Organic Chemistry Laboratory

Abstract

Polymer synthesis has a limited inclusion in most organic chemistry lecture curricula, so emphasizing the concepts of polymer chemistry in a laboratory setting gives students hands-on experience in new content and broadens the scope of the class. The details and outcomes of a robust and well-developed laboratory procedure for the synthesis of a crosslinked epoxy network polymer are described. This experiment has been a part of a first-semester, introductory undergraduate organic chemistry laboratory curriculum for more than two decades and has positively impacted over eight hundred students. The experiment had the unique aspect that students cured the resin in a round, seven-centimeter mold, forming a hardened epoxy disk. This disk, or medallion, was decorated in two different ways: first, a design was etched into the mold before curing to form a permanent imprint; second, the final epoxy medallion was decorated, post-cure, with colored permanent markers and glitter glue. After this laboratory experiment, students took home a durable ornament as a memento of their first-semester organic chemistry laboratory course.

Enhancing Chemical Education through an Epoxy Resin Crafting Activity

“…While many epoxy resins are considered safe when used as directed, it is important to check the product’s safety data sheet (SDS) for information on potential hazards and proper handling precautions. Also, choosing resin systems labeled as low-VOC (where VOC stands for volatile organic compound) or formulated for reduced toxicity can produce safer, nontoxic final goods. , Polymer synthesis in the undergraduate organic chemistry curriculum is important and emphasizes the relevance of epoxy resin synthesis. , These laboratory activities contain diverse methodologies and applications for consideration.…”

“…11,12 Polymer synthesis in the undergraduate organic chemistry curriculum is important and emphasizes the relevance of epoxy resin synthesis. 13,14 These laboratory activities contain diverse methodologies and applications for consideration.…”