Synthesis of co-poly(eugenol sulfonate)-DVB from eugenol as a major component of Syzygium aromaticum oils

Abstract

Abstract. Cationic co-polymerization between eugenol and divinylbenzene (DVB) (2%, 4%, 6%, 8%, 10%, and 12%) with BF₃O(C₂H₅)₂ as a catalyst at room temperature without media under nitrogen atmosphere has been investigated. Co-poly (eugenol sulfonate)-DVB has been synthesized by sulfonation of co-poly(eugenol-DVB). In the sulfonation, concentrated sulfuric acid was used as the reagent and Ag₂SO₄ as a catalyst. Structure and characterization of co-poly (eugenol-DVB) and Co-poly(eugenol sulfonate)-DVB were analyzed by Infra-Red (IR), Differential Thermal Analysis) DTA and UV-Vis. Measurement of the number-average molecular weight (Mn) of the copolymer was used Ostwald capillary viscometer. The yields of co-polymerization of eugenol-DVB were solid matter, and the highest result was found on a copolymer of 10% of DVB. Its melting point was 69.33^oC. The increasing mole of DVB increases the number-average molecular weight (Mn) of co-poly (eugenol sulfonate)-DVB. A copolymer of 12% of DVB gave the highest molecular weight, Mn = 2984 g/mole. Synthesized co-poly (eugenol sulfonate)-DVB was a solid matter too, and the highest result was found on a copolymer of 12% of DVB. Its melting point was 95.5^oC.