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Amphiphilic poly(methyl methacrylate)-b-poly(acrylic acid) (PMMA-b-PAA) copolymers with 4 and 6 arms were synthesized by atomic transfer radical polymerization (ATRP). The polymers were characterized by GPC, H-NMR and FTIR analysis. Polymer samples synthesized at various molecular weights between 18-80 kDa were investigated in terms of maximum loading capacity and critical micelle concentration by...
A novel technique based on in situ steady state fluorescence measurements is introduced for studying swelling processes of gels formed by free radical crosslinking copolymerization of methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDM) in homopolymer solutions. Gels were prepared at 55+/-2 o C for various EGDM contents. After drying these gels, swelling experiments were performed...
Novel asymmetric difunctional initiators 2-phenyl-2-[(2,2,6,6-tetramethylpiperidino)oxy]ethyl 2-bromo-2-methyl propanoate and of 2-phenyl-2-[(2,2,6,6-tetramethylpiperidino)oxy]ethyl 2-bromo propanoate were synthesized in a three-step reaction sequence and used in atom transfer radical polymerization (ATRP) of methyl methacrylate or tert-butyl acrylate leading to corresponding polymer with tempo moiety...
The polymerization of acrylamide (AAm) initiated by redox pair: the cerie ammonium nitrate[Ce(IV)]-hydroxy containing thermolabile azo compounds (R) has been investigated in aqueousnitric acid at 20°C. It was determined that how the rate of polymerization depends on [AAm], [R] (1 or 2) and [Ce(IV)I, respectively. The relationships between degree of polymerization and AAm-, R-, and Ce(IV)-concentrations...
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