Synthesis and characterization of an amphiphilic graft copolymer with a poly(acrylic acid) backbone and n‐octylphenyl polyoxyethylene side chains

Abstract

A novel, well‐defined, amphiphilic graft copolymer was synthesized by the free‐radical copolymerization of acrylic acid and an amphiphilic macromonomer, n‐octylphenyl polyoxyethylene acrylate. This acrylic copolymer was characterized by IR and 1H‐NMR. The number‐average molecular weight was determined by gel permeation chromatography to be 4.37 × 104 (weight‐average molecular weight/number‐average molecular weight = 1.23). The graft copolymer exhibited good solubility in water and high surface activity at much lower concentrations. The molecules of the AA–C8PhEO10Ac copolymer formed polymolecular micelles at 3.0 × 10−4 g/mL. The aggregation of the copolymer was examined in aqueous solution by measurement of the fluorescence of 2‐p‐ toluidinylnaphthalene 6‐sulfonate as a fluorescent probe. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

Synthesis of Poly(acrylamide-Methacrylate)-G-Octylphenyl Polyoxyethylene and its Micellar Behavior in Aqueous Solution

“…Synthesis of the macromonomer and the graft copolymer. C8PhEO10Mac was prepared with C8PhEO10 and methacryloyl chloride in toluene according to Ref [13].…”

Recent advances in the self-assembly of sparsely grafted amphiphilic copolymers in aqueous solution

“…52 For instance, Yin et al prepared the amphiphilic graft copolymer poly(cyclooctene)-g-poly(ethylene glycol) via ring-opening polymerization (ROMP) of poly(ethylene glycol)-modified cyclooctene as a macromonomer and cyclooctene as a comonomer in the presence of Grubbs' generation II catalyst; 53 and Emrick's research group synthesized the similar poly(cyclooctene)-g-poly(ethylene glycol) copolymer by ROMP. 54,55 Free radical polymerization 56,57 and reversible addition-fragmentation chain-transfer polymerization (RAFT) have also been used for the graft-through method. 58 A unique feature of this technique is that the graft density can be controlled by the polymerization reaction conditions.…”

Effect of coating process on morphology, bending rigidity and wearability of polyester harness cords

“…Characteristic peaks at wavenumbers of 3435 and 3342 cm À1 were the -OH stretching and N-H stretching, respectively. The characteristic peaks at wavenumbers of 1678, 1595, 1465 and 1153 cm À1 can be attributed to the C=O stretching of acylamino, C-N stretching, C-H symmetrical bending and C-O-C asymmetric stretching, respectively [33]. When the temperature was heated to 195 C from 130 C, the dehydration and deamination reactions between the macromolecules make the -OH peak and N-H peak shift to 3474 and 3354 cm À1 , respectively, which resulted in emerging a new peak at 2165 cm À1 marked in Figure 8.…”