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bce ›› 2017, Vol. 51 ›› Issue (4): 47-52.doi: 10.3969/j.issn.1673-5854.2017.04.007

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Synthesis and Characterization of Ester of Acrylic Rosin Adduct and GMA

XU Jianben1, YU Caili1, BIAN Feng1, ZHANG Faai2   

  1. 1. College of Chemistry and Biology Engineering, Guilin University of Technology, Guilin 541004, China;
    2. College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
  • Received:2016-06-12 Online:2017-07-30 Published:2017-08-03

Abstract: The ester(RAG) was synthesized with acrylic rosin adduct(RA) and glycidyl methacrylate(GMA) as monomers, triethylamine as catalyst, hydroquinone as inhibitor in toluene solution. The esterification reaction conditions were optimized by single factor experiment and orthogonal experiments. The RAG was analyzed and characterized by Fourier transform infrared spectroscopy(FT-IR), gel permeation chromatography(GPC), viscometer, nuclear magnetic resonance(1H NMR), and thermal gravimetric(TG) analysis. The results showed that the optimum conditions were the molar ratio of GMA and RA at 2:1, the dosage of triethylamine 0.5% (based on RA weight), 120℃ and 4 h. Under these conditions, the ester was deep yellowish brown clear liquid, the esterification rate was 99.5%, the number average relative molecular weight was 547, the weight average relative molecular weight was 848, and the viscosity of the ester in toluene was 10 mPa·s at 25℃ with the mass fraction of 51%. The FT-IR and 1H NMR showed that RAG was successfully prepared. The TG showed that the thermal stability of the ester was higher than that of the acrylic rosin adduct.

Key words: acrylic rosin adduct, glycidyl methacrylate, solvent method, ester

CLC Number: