Synthesis, thermal stability, and degradation kinetics of a novel boron-containing novolac based on triphenyl borate
Corresponding Author
Shijun Huang
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Shaxian Hongsheng Plastic Co. Ltd, Sanming, China
Correspondence
Shijun Huang
Email: [email protected]
Search for more papers by this authorSuyu Zhai
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorWenzhong Lai
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorKai Chen
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorWangchuan Xiao
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorJida Bu
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorCorresponding Author
Shijun Huang
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Shaxian Hongsheng Plastic Co. Ltd, Sanming, China
Correspondence
Shijun Huang
Email: [email protected]
Search for more papers by this authorSuyu Zhai
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorWenzhong Lai
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorKai Chen
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorWangchuan Xiao
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorJida Bu
School of Resources and Chemical Engineering, Sanming University, Sanming, China
Search for more papers by this authorAbstract
A novel boron-containing novolac (triphenyl borate-formaldehyde resin, TPBF) was synthesized. The structure, thermoplasticity, molecular weight, and molecular weight distribution of TPBF have been characterized with FT-IR, melt viscosity, 13C NMR and GPC. The thermal stability of TPBF was investigated by TGA, indicating the thermal stability of TPBF was much better than that of normal novolac (phenol-formaldehyde resin, PF). TPBFs with different molar ratios of formaldehyde to benzene ring in triphenyl borate (TPB) were also synthesized and compared for molecular size, polydispersity and thermal stability. Further, the thermal degradation kinetics of TPBFs and PF were studied by TGA using Madhusdanan-Krishnan-Ninan method and the activation energies were calculated at different degradation stages. It was found that the thermal degradations of TPBFs and PF are a multistage reaction and the degradation reactions in every stage follow the first order reaction mechanism. Finally, the activation energies of thermal degradations of novolac increase with the introduction of boron, the progress of degradation reaction as well as the increase of molar ratios.
CONFLICT OF INTEREST STATEMENT
The authors declare no competing financial interest.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Supporting Information
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