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Synthesis, Characterization, and Thermal Properties of Block Copolymers Containing Poly(styrene‐ co ‐4‐vinylpyridine) and Poly(styrene‐ co ‐butyl acrylate) by Controlled Radical Polymerization
Author(s) -
Taube Carsten,
Fernández García Marta,
SchmidtNaake Gudrun,
Fischer Hartmut
Publication year - 2002
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200290047
Subject(s) - copolymer , styrene , polymer chemistry , small angle x ray scattering , materials science , acrylate , polymer , polymerization , radical polymerization , butyl acrylate , differential scanning calorimetry , scattering , composite material , physics , optics , thermodynamics
Radical polymerization of styrene and mixtures of styrene and 4‐vinylpyridine was performed in the presence of 2,2,6,6‐tetramethylpiperidine‐ N ‐oxyl (TEMPO) producing polymers with controlled molecular weights and molecular weight distributions. The living nature of these polymers was confirmed by using them as macroinitiators in the block copolymerization of styrene and butyl acrylate. The thermal properties of the synthesized statistical diblock copolymers measured by differential scanning calorimetry indicated that a phase‐separated morphology was exhibited in most of the block copolymers. The results were confirmed by transmission electron microscopy (TEM) and small angle X‐ray scattering (SAXS) showing microphase‐separated morphology as is known for homo A‐B diblock polymers.SAXS of a block copolymer synthesized from S/V 70:30 macroinitiators (03) with one detected T g .