Soybean oil-based thermoset reinforced with rosin-based monomer

作者：Zhang, Haibo; Yang, Yanping; Shen, Minggui; Shang, Shibin^*; Song, Jie; Jiang, Jianxin; Song, Zhanqian

来源：Iranian Polymer Journal, 2018, 27(6): 405-411.

DOI：10.1007/s13726-018-0618-5

• Bio-based cured resin
• Mechanical properties
• Rosin-based monomer
• Thermal stability
• Radical copolymerization

A full bio-based cured resin was synthesized by copolymerization of acrylated-epoxidized soybean oil (AESO) and 2-acrylamidoethyl dehydroabietic acid (DHA-HEMAA). The rigid rosin-based monomer 2-acrylamidoethyl dehydroabietic acid was first prepared from dehydroabietic acid and N-hydroxyethylacrylamide, which was characterized by nuclear magnetic resonance and Fourier transform infrared (FTIR) spectrometry techniques. The cured resin was then synthesized and characterized by FTIR spectroscopy, differential scanning calorimetry, dynamic thermomechanical analysis, and thermogravimetric analysis, as well as using a Kruss tensiometer and a universal testing machine. The results indicated that the resin cured with rosin-based monomer exhibited excellent thermomechanical properties. The crosslink density and thermal stability of cured samples containing DHA-HEMAA at molar ratio between 10 and 30% were higher than those of AESO/DHA-HEMAA0 sample. With increasing DHA-HEMAA content, the glass transition temperature (T-g), elongation-at-break, and tensile strength of samples increased, in the stated order, from 16 to 38 degrees C, from 24 to 45.8%, and from 1.7 to 6.5 MPa. Due to DHA-HEMAA with a hydrophenanthrene structure, the theta values increased with the increase of DHA-HEMAA molar ratios. The full bio-based rosin thermosetting resins may have great potentials in practical application fields, such as coating, adhesive, and packaging materials.

• 出版日期2018-6
• 单位中国林业科学研究院林产化学工业研究所; 北京林业大学; 中国林业科学研究院