Application of Glycerol in the Synthesis of Hyperbranched and Highly Branched Polyethers: Characterization, Morphology and Mechanism Proposal

Abstract

Hyperbranched biopolymers is an important class of polymer that is used in different areas, mainly in biomedicine. AB 2 monomers are crucial to the development of a "hyperbranched" architecture of polyglycerol, being glycidol the most commonly used, even considering its environmental hazard. Glycerol carbonate is an ecologically accepted monomer synthesized directly from glycerol, and the chosen for the studies herein. In literature, no studies described the use of glycerol and cyclic carbonates to prepare hyperbranched polymers. This work describes the obtainment of hyperbranched polymers using glycerol and TMP salt as core-initiator and glycerol carbonate and propylene carbonate as monomers. The polymers were characterized by FTIR, NMR, MALDI-TOF and TEM. NMR spectroscopy showed linear, dendritic, and terminal units of hyperbranched polymer. The degree of branching PGLYGC and PTMPGC was 0.669 and 0.667, respectively. The molecular weight of PTMCGC, PTMPPC, PGLYPC was found and compared with MALDI. The molar mass was not different from the calculated by Inverse Gated. These polymers have enormous potential as drug delivery and an environmentally correct synthetic route due to the substitution of glycidol by biocompatible monomers.

Synthesis, Reaction Kinetics and Properties of Aromatic Hyperbranched Polyesters of different Generations (G1 to G4) prepared via One-shot Solution Polycondensation

“…Moreover, the Ar.HBPs synthesized in this paper presented a higher molecular mass in comparison to the literature. Higher value of PDI is justified by the fact that, higher the molecular mass, more the possibility of forming dispersed chains [54]. Ar.HBP-G4.…”

Synthesis and Performance of a Series of Polyisobutylene-Substituted Succinic Acid Ester Dispersants for Reducing Thermal Oxidation Deposition of Jet Fuel

“…Inspired by these articles, polyglycerol, which contains multiple ethers and hydroxyl groups, may exhibit an outstanding performance as the head part of the dispersant. If so, this could become an alternative choice to produce dispersants in industry since polyglycerol is an economical and nontoxic biomass-derived product. , …”

“…If so, this could become an alternative choice to produce dispersants in industry since polyglycerol is an economical and nontoxic biomass-derived product. 17 In this study, a series of polyisobutylene-substituted succinic acid ester (PIBSAE) type dispersants were synthesized through the esterification reaction between PIBSA and polyglycerol. Besides, the effect of the molar ratio of the reactant and the degree of polymerization of polyglycerol on the component and structure of the dispersants were investigated using Fourier transform infrared (FT-IR) and gel permeation chromatography (GPC).…”