Polyether Core‐Shell Cylinder–Polymerization of Polyglycidol Macromonomers

Abstract

Summary: The synthesis and polymerization of macromonomers containing a polymerizable styrene head group and a tail of ethylene oxide derivatives of different character were investigated. The synthesis of macromonomers was based on living anionic polymerization of oxiranes. Two monomers were used: 1‐ethoxyethyl glycidyl ether (glycidol acetal), which after hydrolysis forms hydrophilic glycidol blocks and glycidyl phenyl ether forming hydrophobic blocks. Polymerizable double bonds were introduced by terminating the living chain with p‐(chloromethyl)styrene. The radical polymerization of the macromonomers was carried out in water with addition of a non‐polar solvent (benzene) and AIBN as initiator. Core‐shell polymers of different character and molar masses were obtained. The conversion of polymerized macromonomers was around 50%. However, the polymerization product could easily be separated from the reaction mixture. magnified image

Synthesis and self-association in aqueous media of poly(ethylene oxide)/poly(ethyl glycidyl carbamate) amphiphilic block copolymers

“…As described previously [12,14,16], the anionic polymerization of EEGE can be effectively controlled and is close to living. Polymers with predictable degrees of polymerization and narrow molar mass distributions can be obtained.…”

“…Well defined linear polyglycidol polymers have been obtained by anionic polymerization of ethoxyethyl glycidyl ether-EEGE followed by successive mild cleavage of the protective ethoxyethyl group [12]. In recent years, various polyglycidol based random [13], block [14], star-block [15], brush-like [16], and arborescent [17][18][19][20][21] copolymers have been synthesized.…”

Synthesis of poly(glycidol)‐block‐poly(N‐isopropylacrylamide) copolymers using new hydrophilic poly(glycidol) macroinitiator

“…To explore alternate routes to synthesize interesting amphiphiles, two different polymerization techniques may be combined by the application of the so‐called macroinitiators. For example, the living character of ionic polymerizations permits the introduction of desired functional groups at the end of the polymerizing chain 4, 5. Such well‐defined polymer can be used, either directly (termination with suitable compound) or after a simple organic transformation as an initiator for polymerization of monomers polymerizing according to different mechanisms 5–8.…”

Novel application of double metal cyanide in the synthesis of hyperbranched polyether polyols

“…Hyperbranched polyether polyols are also characterized by 1 H NMR spectroscopy and the representative NMR spectrum is shown in Figure 5. In the 1 H NMR spectrum, chemical shifts of 2.014 and 2.109 ppm correspond to the hydroxyl and the chemical shifts at 3.492-3.611 ppm are due to the alternate overlap coupling of parahydrogen and tert-hydrogen.…”

“…As classic reaction of ring-opening multibranching polymerization (ROMBP), it has been studied extensively for many years [1][2][3][4]. Hyperbranched aliphatic polyethers with controlled molecular weight and narrow molecular weight distribution are prepared via anionic polymerization of glycidol with rapid cation-exchange equilibrium [5,6].…”