Abstract
A theoretical study on the multi-channel hydrogen addition of maleimide containing 2-hydroxy-benzophenone onto polyethylene in ultra-violet (UV) radiation cross-linking process was carried out using density functional theory (DFT) method at the B3LYP/6–311 + G(d,p) level. The energetic information and the minimum energy path (MEP) are calculated for nine reaction channels. The electrophilic addition reactions at two positions in the target molecule (maleimide containing 2-hydroxy-benzophenone) were investigated, which are on the C atom of C = C groups and on the O atom of C = O groups. Frontier molecular orbitals (MOs) and natural bond orbital (NBO) charge population of the target molecule have been analyzed in detail. As a result, the reaction site of C in C = C group is more active than the site of O in C = O groups. The target molecule can be used as a multi-functional additive candidate. The predicted mechanism may provide a theoretical basis for the real application of cross-linked polyethylene (XLPE) high-voltage insulation cables.
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The standard coordination of the TSs for every channel is given in the Supplementary information.
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The study was carried out on the basis of Gaussian 09, Revision A.01.
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This work is supported by the National Natural Science Foundation of China (51337002) and Key Project of the Joint Fund for Regional Innovation and Development of National Natural Science Foundation of China (U20A2030).
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We declare that this work was done by the authors named in this article, and all liabilities pertaining to claims relating to the content of this article will be borne by the authors. In addition, a declaration of the role of each author is mentioned as follows: Prof Hui Zhang carried out the geometry optimizations, participated in data analysis, and drafted the manuscript; Dr Chi Deng carried out the calculation of stationary points and frequency analysis; Dr Xia Du carried out the calculation of charger density and the statistical analysis and collected field data; Prof Yan Shang participated in the analysis of the results; Prof Hong Zhao, Xuan Wang, and Baozhong Han designed the study; Prof Zesheng Li helped perform the analysis with constructive discussions. All authors read and approved the final manuscript.
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Zhang, H., Deng, C., Du, X. et al. Theoretical study on the grafting reaction of maleimide containing 2-hydroxy-benzophenone onto polyethylene. J Mol Model 27, 259 (2021). https://doi.org/10.1007/s00894-021-04874-2
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DOI: https://doi.org/10.1007/s00894-021-04874-2