Synthesis and characterization of model fluoroacylated poly(ethylene oxide)

Synthesis and characterization of a poly(acrylic acid)‐graft‐methoxy poly(ethylene oxide) comblike copolymer

“…It was because the esterification reaction between PAA and MPEO was a typical reversible reaction in the presence of TsOH as a catalyst for the water produced during the reaction, which led to low the grafting degree. However, when DMAP/DCC was used as a catalyst, the polymerization process of the PAA‐ g ‐MPEO comblike copolymer could be illustrated as shown in Scheme 18, 20, 25. First, the carboxylic acid was converted to acid anhydride (a) by the reaction with DCC (1);26 then, the nucleophilic DMAP attacked the carbonyl group in the acid anhydride (2) to form the intermediate (b).…”

“…In general, comblike copolymers have been synthesized by the esterification reaction between poly(carboxylic acid) as a backbone and PEO as side chains at a reaction temperature of 120–180°C; their grafting degree has been low, and the product has been yellow or brown because of oxidization at high reaction temperatures. 4‐Dimethylaminopyridine (DMAP) has been an effective catalyst and has been widely used in the acylation reaction of alcohols with high conversion at room temperature and neutral conditions, even in the acylation reaction of impeditive and inert alcohols with acid anhydride 18–20. In this study, a methoxy poly(ethylene oxide) (MPEO) grafted PAA comblike copolymer was synthesized with the grafting reaction of MPEO onto PAA chains in the presence of DMAP as an activator at a reaction temperature of 30–67°C.…”

Structure factor of polymers interacting via a short range repulsive potential: Application to hairy wormlike micelles

“…The surfactant micelles are formed by diluting in brine ([NaCl]=0.5 M) a mixture of cetylpyridinium chloride (CpCl) and sodium salicylate (NaSal) at a fixed molar ratio [NaSal]/[CpCl] = 0.5 [15]. We use commercially available triblock copolymers (Synperonic F108 and F68, by Serva, used as received) and a diblock copolymer (PC18, synthesized in our laboratory [16]).…”

Novel perfluoroalkylated oligo(oxyethylene) methyl ethers with high hemocompatibility and excellent co-emulsifying properties for potential biomedical uses

“…The reagents include Bu 3 SnH/AIBN [47][48][49][50][51], H 2 /Pd/C [42,44,46], Scheme 1. Preparation of amphiphiles 7-12.…”