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In Situ Crosslinking of Nanoparticles in Polymerization‐Induced Self‐Assembly via ARGET ATRP of Glycidyl Methacrylate
Author(s) -
Wang Jian,
Wu Zhigang,
Wang Guowei,
Matyjaszewski Krzysztof
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800332
Subject(s) - glycidyl methacrylate , polymer chemistry , polymerization , materials science , monomer , nanoparticle , atom transfer radical polymerization , methacrylate , dynamic light scattering , chemical engineering , polymer , nanotechnology , engineering , composite material
Polymerization‐induced self‐assembly (PISA) and in situ crosslinking of the formed nanoparticles are successfully realized by activators regenerated by electron‐transfer atom transfer radical polymerization (ARGET ATRP) of glycidyl methacrylate (GMA) or a mixture of GMA/benzyl methacrylate (B n MA) monomers in ethanol. Poly(oligo(ethylene oxide) methyl ether methacrylate) was employed as macroinitiator/stabilizer, and a cupric bromide/tris(pyridin‐2‐ylmethyl)amine complex as catalyst. Tin (2‐ethylhexanoate) was used as reducing agent for ARGET ATRP, and simultaneously acted as a catalyst for ring‐opening polymerization of oxirane ring in GMA. The kinetics shows that the double bond in GMA was completely polymerized in 4.0 h, while only a 33% conversion of oxirane ring in GMA was reached at 117.0 h. Such a large difference would guarantee a smooth PISA and a subsequent in situ crosslinking of formed nanoparticles. The transmission electron microscopy and dynamic light scattering show spherical nanoparticles formed. With a feed molar ratio [B n MA] 0 /[GMA] 0 = 150/50, 100/100, and 50/150, the nanoparticles formed in ethanol can dissociate or swell in toluene. When pure GMA was used, the solid nanoparticles were observed in toluene or ethanol. The ARGET ATRP provides an efficient strategy to stabilize the nanoparticles formed in the PISA of GMA‐containing system.