Controlled radical polymerization of poly(methyl methacrylate‐g‐epichlorohydrin) using N,N‐dithiocarbamate‐mediated iniferters

Abstract

Poly(epichlorohydrin) (PECH) with pendent N,N‐diethyl dithiocarbamate groups (PECH‐DDC) was prepared by reaction of PECH with sodium N,N‐diethyl dithiocarbamate (DDC) in anhydrous ethanol, before being used as a macrophotoinitiator for the graft polymerization of methyl methacrylate. Photopolymerization was carried out in a photochemical reactor at a wavelength greater than 300 nm. Controlled radical polymerization was confirmed by the linear increase of the molecular weight of polymers with conversion. The polydispersity remained at 1.4–1.6 during polymerization. The formation of PMMA‐g‐PECH copolymer was characterized by GPC, 1H‐NMR, FTIR spectroscopy, and DSC. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

Synthesis of poly(methyl methacrylate‐g‐glycidyl azide) graft copolymers using N, N‐dithiocarbamate‐mediated iniferters

“…All the GPC curves show a unimodal distribution and the elution peaks scarcely shifted to the high‐molecular weight‐side increasing with reaction time. GAP‐macro‐initiator peak disappeared after the polymerization solution was precipitated in methanol, providing proof of removal of un‐reacted macro‐initiator (GAP‐DDC) 12, 18…”

“…The polydispersity remained in the range of 1.4–1.6 (based on polystyrene standards). Therefore, it may be better to call this polymerization a “living” radical mechanism rather than a “controlled.” It is worth mentioning that running photopolymerization of MMA without using photoiniferter yielded only trace amounts of PMMA with high molecular weight and a polydispersity greater than 2 12…”

“…The ring‐opening polymerization of epichlorohydrin was carried out in the presence of 1,4‐butane diol according to the procedure of Ivin and Sagusa 11. Poly(epichlorohydrin) graft N, N ‐diethyl dithiocarbamate (PECH‐DDC) was synthesized by refluxing hydroxyl terminated poly(epichlorohydrin) with sodium diethyl dithiocarbamate for 18 h in absolute ethanol according to the procedure of Alkaabi and Reenen 12. Successful synthesis of PECH and PECH‐DDC was confirmed by FTIR, UV, and NMR analysis.…”

Synthesis and Characterization of Polysulfone-based Graft Copolymer Possessing Quaternary Ammonium Salts via Photoiniferter Polymerization

“…Iniferter functionalized polysulfone (PSU-DDC) was synthesized from the reaction of PSU with sodium diethyldithiocarbomate (35). The PSU-CH2-Cl (500 mg, 0.013 mmol), sodium diethyldithiocarbamate (60 mg, 0.35 mmol) and pyridine (5 mL) were placed to a 100 mL flask.…”

Synthesis and characterization of comb-type graft copolymers by redox polymerization and "click" chemistry method

“…After Sharpless et al [1] described "click" chemistry method in 2001, applications of the methods have been widely studied [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Polyepichlorohydrin (PECH) is present in many syntheses of copolymers [18][19][20][21][22]. Poly(methyl methacrylate) (PMMA) is frequently used in sheet form as an alternative to glass.…”