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Issue 21, 2010
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Morphology transitions in RAFT polymerization

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Abstract

Polymerization-induced self-assembly and re-organization (PISR) was used to prepare polymeric nanostructured materials with a variety of morphologies. Reversible addition-fragmentation chain transfer (RAFT) polymerization of styrene in a selective solvent, methanol, was carried out using cyanoisopropyl dithiobenzoate-terminated poly(2-dimethylaminoethyl methacrylate) (PDMAEMA-DBT) as the macro chain transfer agent and stabilizer for investigation of the factors influencing the formation of morphologies. Various morphologies, including spherical micelles, nanostrings, vesicles and large compound vesicles, with different shapes were obtained by changing the feed ratios and reaction conditions. The sequential morphologic transitions from spherical micelles to nanostrings, to vesicles and to large compound vesicles via increasing the chain length ratio of the hydrophobic block to the hydrophilic one in the same system were observed for the first time. This approach can be performed at a high concentration, thus it can be scaled up for the reproducible preparation of nanostructured materials in a relatively high volume.

Graphical abstract: Morphology transitions in RAFT polymerization

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Publication details

The article was received on 23 Apr 2010, accepted on 20 Jul 2010 and first published on 14 Sep 2010


Article type: Paper
DOI: 10.1039/C0SM00284D
Citation: Soft Matter, 2010,6, 5554-5561
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    Morphology transitions in RAFT polymerization

    W. Cai, W. Wan, C. Hong, C. Huang and C. Pan, Soft Matter, 2010, 6, 5554
    DOI: 10.1039/C0SM00284D

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