Abstract
Double-hydrophilic block copolymers containing the charged blocks of poly(acrylic acid) (PAAc) and the neutral blocks of monomethyl ether of poly(ethylene oxide) (MEPEO) are synthesized by a free radical block copolymerization of PAAc with monomethyl ether of poly(ethylene glycol) of various molecular weights (M vMEPEG = 1.1·103 – 5·103). It is revealed that the block copolymerization has a matrix character because non-covalent interactions of propagating PAAc chains with MEPEG. This fact points out the formation of intramolecular polycomplexes in the given diblock copolymers. The MEPEO-b-PAAc copolymers obtained are characterized by 1H NMR spectroscopy.
Notes
a The molar ratio between Ce1V and AAc.
b The polymerization rate at the 20% and 40% monomer conversion.
c The monomer conversion in 28.5 hours after the polymerization beginning.