One-pot synthesis of hydroxyl terminated hyperbranched semi-aromatic Poly(ester-imide)s. (22nd June 2022)

• Record Type: Journal Article
• Authors: Zhou, Jiajun; Li, Mao; Wu, Jiadong; Zhang, Chongyin; He, Zidong; Xiao, Yan; Tong, Gangsheng; Zhu, Xinyuan
• Is Part Of: Polymer. Volume 253(2022)
• Publication Date: 2022-06-22
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2022.124970
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: A new kind of hyperbranched semi-aromatic poly(ester-imide)s with hydroxyl terminated groups has been prepared from commercially available 1, 2, 4-benzenetricarboxylic anhydride (TMA) as the AA′-type aromatic monomer and 3-amino-1, 2-propanediol (3APPD), 2-amino-1, 3-propanediol (2APPD), N, N-bis(2-hydroxyethyl)ethylenediamine (BHED) as CB2 -type aliphatic monomers via a simple one-pot melting polymerization method. The effects of synthesis conditions on the structures and properties of the products were investigated in detail. The combination of FTIR, 1 H NMR, 2D NMR, MALDI-FTICR-MS and model reactions have been used to characterize the structures of the obtained polymers. As assessed using thermal measurements, the obtained hyperbranched semi-aromatic poly(ester-imide)s possess low glass transition temperature (≤120 °C) and high thermostability with an onset decomposition temperature ranging from 355 to 420 °C in nitrogen. The products possess abundant terminal hydroxyl functional groups. Hydroxyl values vary between 198 and 248 mg KOH/g depending on the particular precursors used to generate the polymers. Graphical abstract: The synthesis of hydroxyl terminated hyperbranched semi-aromatic poly(ester-imide)s. Image 1 Highlights: Hyperbranched semi-aromatic poly(ester-imide)s were prepared by one-pot melting polymerization. HBPEIs possess low Tg and high thermostability. HBPEIs are terminated by abundant hydroxyl function groups. This synthetic strategy exhibits good fault-tolerant ability for reaction condition.