Distinction between Features of Mixed-Brushes raised from Solution-Grown and Melt-Grown Single Crystals

Self-assembled mixed-brushes with matrix-dispersed and co-continuous surface morphologies were developed from solution and melt of poly(ethylene glycol)-b-polystyrene (PEG-b-PS) and poly(ethylene glycol)-b-poly(methyl methacrylate) (PEG-b-PMMA) diblock copolymers by self-seeding technique. The preceding observations implied some major differences which exist between two growth systems. The portion of PMMA/PS brushes in the surface of polymer melt grown mixed-brushes increased in comparison to the corresponding solution grown mixed-brush single crystals. The thicknesses for the same molecular weights were higher in melt grown mixed-brush single crystals. Similar trends, nevertheless, observed for the thickness variances vs. molecular weight and crystallization temperature

Keywords:

mixed-brush , PEG-b-PS , PEG-b-PMMA , self-seeding