期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 11, 页码 10682-10692出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b02650
关键词
Benzoxazine; Rosin; Biobased resin; Dielectric properties; Anticorrosion
资金
- Shanghai Natural Science Foundation [16ZR1407700]
- National Natural Science Foundation of China [51573045, 51773060]
- Shanghi Scientific and Technological Innovation Project [16520722000]
In the present study, two novel fully biobased benzoxazines were synthesized using modified products of rosin, dehydroabietylamine, guaiacol, 4-methylumbelliferone, and paraformaldehyde. The chemical structures of DM (dehydroabietylamine, 4-methylumbelliferone) and DG (dehydroabietylamine, guaiacol) were characterized by Fourier transform infrared spectroscopy (FTIR), H-1 nuclear magnetic resonance (NMR) and C-13 NMR spectra, dimensional nuclear magnetic and high-resolution mass spectrometry. The curing process of DM and DG was monitored by differential scanning calorimetry and in situ FTIR The results demonstrated that the corresponding polymers PDM and PDG had high thermal stability. In addition, they had low dielectric constants below 3.30 at 25 degrees C and 1 kHz condition. Water contact angle measurements, OPC-time curves, and Tafel plots of PDG and PDM were also studied. The results showed that anticorrosion performances of PDG and PDM were stable during the immersion process and had strong abilities as shield corrosive media. Therefore, these two benzoxazine resins based on dehydrobietylamine may have potential applications in many fields.
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