Synthesis and application of long‐chain alkyl quaternary ammonium‐functionalized hyperbranched polyester

Abstract

A novel kind of macromolecule, long-chain alkyl quaternary ammonium functionalized hyperbranched polyester (QHPE), was synthesized by the reaction of hyperbranched polyester Boltorn H30 (H30) and 2,3-epoxypropyl alkyl dimethyl ammonium chloride under alkaline conditions in dimethylformamide. After modification, the hydroxyl terminal group of H30 was converted into an ammonium functional group. A series of products was obtained with different lengths of an alkyl chain (C8, C12, C16, and C18) in the ammonium functional group. All of the products were characterized by Fourier transform infrared and NMR spectroscopy. The application of QHPEs as accelerators for the alkaline hydrolysis of poly(-ethylene terephthalate) (PET) fabric was studied. The influences of the structure of QHPEs and hydrolysis conditions, such as alkaline concentration, hydrolysis time, and temperature, on the weight loss of PET fabrics were investigated. The results indicated that QHPE was a novel, efficient accelerator for the alkaline hydrolysis of PET fabrics.

Architecture, Assembly, and Emerging Applications of Branched Functional Polyelectrolytes and Poly(ionic liquid)s

“…166 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 polyester-polyol second generation (Boltorn H30) by epoxypropyl alkyl dimethylammonium chloride. 170 HBPILs can be useful as thermosensitive separation agents and thermosensitive reaction promoters or inhibitors.…”

Thermally Responsive Hyperbranched Poly(ionic liquid)s: Assembly and Phase Transformations

“…4,14−17 The majority of these researches considers aprotic amphiphilic HBP-ILs, and few existing reports describe either synthesis or properties of cationic HBP-ILs. [1][2][3][4][5][6][7][8][9]18,19 The assembly of HBP-ILs in aqueous media and the formation of functional nanomaterials based on HBP-ILs are a complex process that depends on the poly(ionic liquid)s architecture, chemical composition, and a balance of intramolecular and intermolecular interactions. 20−23 Moreover, the assembly behavior of branched poly(ionic liquid)s is rarely analyzed especially in variable environmental conditions.…”

“…Poly­(ionic liquid)­s based on hyperbranched polyesters (HBP-ILs) with different types of peripheral ionic liquid groups show high thermal stability and low viscosity even for high molecular weight of HBP-ILs which can be synthesized in one-step reaction. ,− The majority of these researches considers aprotic amphiphilic HBP-ILs, and few existing reports describe either synthesis or properties of cationic HBP-ILs. − ,, The assembly of HBP-ILs in aqueous media and the formation of functional nanomaterials based on HBP-ILs are a complex process that depends on the poly­(ionic liquid)­s architecture, chemical composition, and a balance of intramolecular and intermolecular interactions. − Moreover, the assembly behavior of branched poly­(ionic liquid)­s is rarely analyzed especially in variable environmental conditions. − Some examples include the synthesis of HBP-ILs based on a hyperbranched poly­(3-ethyl-3-hydroxy­methyloxetane) core with an inner imidazolium cation shell and outer nonpolar n -alkyl shell, hyperbranched poly­(glycidol) terminated with N -methyl­imidazole, or amine-terminated poly­(amido-amine) dendrimers …”

How does the type of counterion influence the polymerization rate and thermal properties of tailored choline‐based linear‐ and star‐shaped poly(ionic liquid)s PILs?

“…On the other hand, an overview of branched PILs topologies is still lacking in the literature . Only a few studies related to these materials of nonlinear topology including star‐shaped or hyperbranched imidazolium‐based polymers and long‐chain alkyl quaternary ammonium functionalized hyperbranched polyester have been published so far. Note that branched PILs possess a unique charge redistribution and a strong counterion confinement ability which influence on their interesting phase behavior and generally properties.…”