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Synthesis and characterization of an isocyanate-terminated hyperbranched polymer and its waterborne study

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Abstract

An isocyanate-terminated hyperbranched polymer (HBI) was successfully synthesized by reacting hyperbranched polyester (BoltornTM HB-20) with isophorone diisocyanate (IPDI). Gel permeation chromatography (GPC) was used to monitor the molecular weight and its distribution changes during the synthesis. The structure and composition of IPDI were characterized by 1H and 13C nuclear magnetic resonance (NMR) spectroscopy. The structure of HBI was confirmed by one-dimensional 1H, 13C NMR, and distortionless enhancement by polarization transfer (DEPT) NMR spectroscopy as well as two-dimensional heteronuclear multiple bond coherence (2D-HMBC) and heteronuclear single quantum coherence (HSQC) NMR spectroscopy. Furthermore, HBI was reacted with methoxypolyethylene glycols (MPEG) to obtain a water-dispersible polyisocyanate with hyperbranched structure.

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Funding

This study was supported by Shanghai Leading Academic Discipline Project (No.B 502).

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Authors and Affiliations

  1. School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

    Jie Zhang, Hui-Ting Tian, Yu-Ting Zhang, Chun-Pu Hu & Zhi-Ping Zhang

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  1. Jie Zhang
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Correspondence to Jie Zhang.

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Zhang, J., Tian, HT., Zhang, YT. et al. Synthesis and characterization of an isocyanate-terminated hyperbranched polymer and its waterborne study. J Polym Res 28, 149 (2021). https://doi.org/10.1007/s10965-021-02499-w

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