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Issue 7, 2012
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Synthesis and properties of thermosetting resin based on urushiol

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Abstract

We have synthesized a novel benzoxazine monomer and polybenzoxazine thermosetting resin based on urushiol, a natural product. Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC) studies demonstrate that the thermally activated ring opening polymerization of the benzoxazine occurs at around 210 °C without addition of catalyst. Thermal gravimetric analysis (TGA) measurements show the temperatures corresponding to 5% and 10% weight loss are 325 °C and 357 °C, respectively, with a char yield of 22% at 600 °C. Dynamic mechanical analysis (DMA) studies indicate the urushiol-based polybenzoxazine exhibits excellent toughness with a storage modulus (G′) of 606 MPa at room temperature and an elongation at break of 17.4%.

Graphical abstract: Synthesis and properties of thermosetting resin based on urushiol

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Article information


Submitted
04 Oct 2011
Accepted
20 Dec 2011
First published
08 Feb 2012

RSC Adv., 2012,2, 2768-2772
Article type
Paper

Synthesis and properties of thermosetting resin based on urushiol

H. Xu, Z. Lu and G. Zhang, RSC Adv., 2012, 2, 2768
DOI: 10.1039/C2RA00829G

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