Abstract—This research aims to synthesize and characterize of rosin-polyethylene glycol derivatives from natural rosin and polyethylene glycol 1500 (PEG1500). In this research, reaction conditions for the synthesis of rosin-PEG derivatives such as catalyst type, catalyst concentration, reaction temperature and etc. were optimized. Chemical and physical properties of water soluble rosin (WSR) were characterized using FT-IR, 13C-NMR, DSC, and GPC. It was found that water soluble rosin-PEG derivatives were successful synthesized from natural china rosin and PEG using 2% ZnO as catalyst, 2:1 molar ratio of rosin: PEG at 250 °C for 9 hours. The obtained rosin-PEG1500 derivative were completely soluble in water and rosin-PEG1500 derivative showed melting point at 40.6 °C.
Index Terms—Water soluble rosin, polyethylene glycol 1500, esterification, zinc oxide.
P. Kanlaya is with the Program in Petrochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand (e-mail: Kanlaya.P@Student .chula.ac.th).
W. Sumrit and P. Amorn are with the Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand (e-mail: sumrit.w@chula.ac.th , amorn.p @chula.ac.th).
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Cite: P. Kanlaya, W. Sumrit, and P. Amorn, "Synthesis and Characterization of Water Soluble Rosin-Polyethylene Glycol 1500 Derivative," International Journal of Chemical Engineering and Applications vol. 7, no. 4, pp. 277-281, 2016.
