Epoxidation of Cardanol's Terminal Double Bond.

ABSTRACT: In this investigation, the terminal double bonds of the side chain epoxidized cardanol glycidyl ether (SCECGE) molecule were further epoxidized in the presence of Oxone® (potassium peroxomonosulfate) and fluorinated acetone. Regular methods for the double bond epoxidation are not effective on the terminal double bonds because of their reduced electronegativity with respect to internal double bonds. The terminal double bond functionality of the SCECGE was epoxidized to nearly 70%, increasing the epoxy functionality of SCECGE from 2.45 to 2.65 epoxies/molecule as measured using proton magnetic nuclear resonance (1H-NMR). This modified material-side chain epoxidized cardanol glycidyl ether with terminal epoxies (TE-SCECGE)-was thermally cured with cycloaliphatic curing agent 4-4'-methylenebis

SUBMITTER: Kinaci E 

PROVIDER: S-EPMC7570343 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature