|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||Tannic Acid as a Flame Retardant - Deriving Value from Leather Tanning Waste
||Matthew Korey, John Howarter
|On-Site Speaker (Planned)
Tannic acid (TA) is a well known polyphenolic biomolecule found in a wide variety of trees, seeds, and nuts. Although this chemical is biologically derived, TA has become a significant problem in the waste water of the leather tanning industry due to its ability to interact with toxicants in aquatic systems and change their toxicity. Apart from being a strong antioxidant and chelating agent, which make it a good candidate for leather tanning, it has more recently been studied for its applications as a flame retardant additive for polymeric systems. Current flame retardant additives in electronic circuit boards are not biologically derived and have significant effects on human health and the environment in very low concentrations. TA has never been studied in this application. In this study, TA was hydrophobized with acetic anhydride to increase its compatibility with the epoxy matrix. The resulting TA-epoxy composite was then characterized.