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Issue 9, 2015
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Synthetic strategy for preparing chiral double-semicrystalline polyether block copolymers

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Abstract

We report an effective strategy for the synthesis of semi-crystalline block copolyethers with well-defined architecture and stereochemistry. As an exemplary system, triblock copolymers containing either atactic (racemic) or isotactic (R or S) poly(propylene oxide) end blocks with a central poly(ethylene oxide) mid-block were prepared by anionic ring-opening procedures. Stereochemical control was achieved by an initial hydrolytic kinetic resolution of racemic terminal epoxides followed by anionic ring-opening polymerization of the enantiopure monomer feedstock. The resultant triblock copolymers were highly isotactic (meso triads [mm]% ∼ 90%) with optical microscopy, differential scanning calorimetry, wide angle X-ray scattering and small angle X-ray scattering being used to probe the impact of the isotacticity on the resultant polymer and hydrogel properties.

Graphical abstract: Synthetic strategy for preparing chiral double-semicrystalline polyether block copolymers

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Publication details

The article was received on 04 Nov 2014, accepted on 01 Dec 2014 and first published on 11 Dec 2014


Article type: Paper
DOI: 10.1039/C4PY01503G
Citation: Polym. Chem., 2015,6, 1465-1473
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    Synthetic strategy for preparing chiral double-semicrystalline polyether block copolymers

    A. J. McGrath, W. Shi, C. G. Rodriguez, E. J. Kramer, C. J. Hawker and N. A. Lynd, Polym. Chem., 2015, 6, 1465
    DOI: 10.1039/C4PY01503G

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