Polymerization-induced self-assembly: ethanolic RAFT dispersion polymerization of 2-phenylethyl methacrylate

Abstract

Reversible addition-fragmentation chain transfer (RAFT) radical dispersion polymerization (RAFTDP) has been employed to polymerize 2-phenylethyl methacrylate (PEMA) using poly[2-(dimethylamino)ethyl methacrylate] (PDMAEMA) macromolecular chain transfer agents (macro-CTAs) of varying average degree of polymerization (X̄n).

Polymerization-induced self-assembly of block copolymer nanoparticles via RAFT non-aqueous dispersion polymerization

“…Recently, Lowe and co-workers [29,87,88] and hence the effective packing parameter for the diblock copolymer chains [87]. Such thermo-reversible degelation has been previously reported for diblock copolymer worms prepared by RAFT aqueous dispersion polymerization, where a worm-to-sphere transition was observed upon cooling [39,89].…”

“…Such formulations can be very efficient [15][16][17], but in many cases this approach leads to the formation of kinetically-trapped spheres, rather than the full range of copolymer morphologies [15][16][17][18][19][20][21]. In contrast, there are many examples of RAFT dispersion polymerization formulations that yield spheres, worms and vesicles [17,[22][23][24][25][26][27][28][29]. In this approach, a soluble macromolecular chain transfer agent (macro-CTA) is utilized to polymerize a soluble monomer to form an insoluble polymer block, thus forming amphiphilic diblock copolymers that undergo spontaneous in situ selfassembly during chain growth (see Figure 1).…”

Poly( N -2-(methacryloyloxy)ethyl pyrrolidone)-poly(benzyl methacrylate) diblock copolymer nano-objects via RAFT alcoholic dispersion polymerisation in ethanol

“…[29][30][31][32][33][34][35][36] Pan and co-workers have made a number of notable contributions to the field of RAFT alcoholic dispersion polymerisation [37][38][39][40]. Their approach typically involves chain extension of a soluble macro-CTA such as poly(2-dimethylaminoethyl methacrylate) with styrene in methanol [37].…”

Characterization of Diblock Copolymer Order-Order Transitions in Semidilute Aqueous Solution Using Fluorescence Correlation Spectroscopy

“…[14][15][16] This versatile approach has enabled spherical, worm-like or vesicular copolymer morphologies to be generated in concentrated solution. [ 11,[17][18][19][20][21][22][23][24][25][26] Such a nonionic PGMA-PHPMA diblock copolymer exhibits a thermoreversibleThe temperature and pH-dependent diffusion of poly(glycerol monomethacrylate)-blockpoly(2-hydroxypropyl methacrylate) nanoparticles prepared via polymerization-induced self-assembly in water is characterized using fl uorescence correlation spectroscopy (FCS). Lowering the solution temperature or raising the solution pH induces a worm-to-sphere transition and hence an increase in diffusion coeffi cient by a factor of between four and eight.…”

“…[14][15][16] This versatile approach has enabled spherical, worm-like or vesicular copolymer morphologies to be generated in concentrated solution. [ 11,[17][18][19][20][21][22][23][24][25][26] Such a nonionic PGMA-PHPMA diblock copolymer exhibits a thermoreversible…”