Hyperbranched polymer surfactant: synthesis, characterization and surface tension activity

Abstract

A series of hyperbranched polymer surfactants (HBP-C8, HBP-C12 and HBP-C16) were synthesized by the reaction between hydroxyl-terminated hyperbranched polymers (HBP) and fatty acyl chloride. The structure of obtained hyperbranched polymer surfactant was characterized by FTIR, NMR and GPC. The results showed that the products have amphiphilic structure. The thermal property of the hyperbranched polymer surfactant investigated by DSC and TGA was strongly influenced by the length of end alkyl chain. Surface activity of hyperbranched polymer surfactant was analyzed by surface tension method and UV spectrophotometry, respectively. The results showed that hyperbranched polymer surfactant took on better surface activity, which can effectively reduce the surface tension of the water. The hyperbranched polymer surfactant has a lower critical micelle concentration (CMC) and displays single molecular micellar properties, which can package small hydrophilic molecules in relatively low concentration. Graphical abstract

Branched Polymers: Synthesis and Application

“…Zhang et al prepared hyper-branched polymer surfactants (HBP-C) by grafting hydrophobic fatty acyl chloride on hydroxyl-terminated hyperbranched polymer, which was prepared by polycondensation between trimethylolpropane and the dimer of succinic anhydride and diethanolamine. 92 The HBP-C could significantly reduce the surface tension of water and therefore could be used as an effective surfactant. The HBP-C could also encapsulate small hydrophilic molecules at relatively low concentrations to form single-molecule micelles, and this property was expected to be useful in dye separation.…”

“…The application of branched polymers in biomedicine has been summarized previously, , and we will not further discuss it here. In the following, we mainly introduce the applications of branched polymers in solid polymer electrolytes for Li batteries, ,− coatings and membranes, − surfactants, − and hydrogels. − …”

“…Unlike common ionic surfactants, the HPE anionic surfactant had a special hyperbranched structure that not only had electrostatic repulsion but also had spatial resistance, and the emulsion remained stable even when electrolyte salts were added. Zhang et al prepared hyperbranched polymer surfactants (HBP-C) by grafting hydrophobic fatty acyl chloride on hydroxyl-terminated hyperbranched polymer, which was prepared by polycondensation between trimethylolpropane and the dimer of succinic anhydride and diethanolamine . The HBP-C could significantly reduce the surface tension of water and therefore could be used as an effective surfactant.…”

“…Copyright 2016 Royal Society of Chemistry. (B) Reproduced with permission from ref . Copyright 2021 MDPI.…”

Triethoxysilane End-Functional Branched Waterborne Polyurethane Adhesives for Leather Substrates

“…In the case of the same molecular weight, the viscosity of the hyperbranched polymer is much smaller than that of the linear polymer because of its small fluid size; , as a result, the use of solvents can be reduced during the synthesis of WPU. In addition, the hyperbranched polymer is rich in a large number of end-active groups, so it is easy to react with other materials, as well as its highly branched structure can endow the hyperbranched WPU with good mechanical properties and good film-forming ability. − …”