Macromolecular Chemistry and Physics

Cover image for Vol. 213 Issue 17

September 14, 2012

Volume 213, Issue 17

Pages 1753–1862

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. Macromol. Chem. Phys. 17/2012 (page 1753)

      Brian Fitzpatrick, Brian Creran, Graeme Cooke and Vincent M. Rotello

      Version of Record online: 4 SEP 2012 | DOI: 10.1002/macp.201290052

      Thumbnail image of graphical abstract

      Front Cover: Three block copolymers featuring a flavin moiety, a hydrophobic (methyl, benzyl, and naphthyl) methacrylate block and a post-functionalized trimethylammonium group were synthesized to be used as environmental probes. The photograph shows the propensity of these polymers to form gels in dilute aqueous solutions. Further details can be found in the article by B. Fitzpatrick, B. Creran, G. Cooke*, and V. M. Rotello* on page 1758.

  2. Masthead

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. Macromol. Chem. Phys. 17/2012

      Version of Record online: 4 SEP 2012 | DOI: 10.1002/macp.201290053

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. Flavin-Functionalized Amphiphilic Block Copolymer Gels (pages 1758–1767)

      Brian Fitzpatrick, Brian Creran, Graeme Cooke and Vincent M. Rotello

      Version of Record online: 12 JUL 2012 | DOI: 10.1002/macp.201200225

      Thumbnail image of graphical abstract

      The synthesis of three amphiphilic block copolymers featuring a flavin end group, a hydrophobic methacrylate block, and a hydrophilic ammonium block is described. It is shown that these materials have the propensity to form gels in dilute aqueous solution, which can be disrupted upon irradiation with ultrasound. The interesting optical properties of the flavin unit are exploited to conveniently monitor the disruption of the gel using UV–vis spectroscopy.

    2. Aqueous RAFT Polymerization of N-Acryloylmorpholine, Synthesis of an ABA Triblock Glycopolymer and Study of its Self-Association Behavior (pages 1768–1782)

      Luca Albertin, Anna Wolnik, Ali Ghadban and Frédéric Dubreuil

      Version of Record online: 7 AUG 2012 | DOI: 10.1002/macp.201200256

      Thumbnail image of graphical abstract

      The RAFT polymerization of N-acryloylmorpholine with a symmetric trithiocarbonate in homogeneous aqueous solution was investigated. For all temperatures tested, uniform polymers with a predetermined molar mass were obtained. An ABA triblock glycopolymer was prepared by extending a poly(NAM)-macro chain transfer agent with N-acryloyl-β-D-glucopyranosylamine: In THF/water mixture, the latter formed unilamellar polymersomes with a diameter of 380 nm.

    3. Synthesis of Oxetane-Functional Aliphatic Polyesters via Enzymatic Polycondensation (pages 1783–1790)

      Sophie S. Müller and Holger Frey

      Version of Record online: 2 AUG 2012 | DOI: 10.1002/macp.201200269

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      The incorporation of 3,3-bis(hydroxymethyl)oxetane (BHMO) into aliphatic polyesters is described. The strategy introduces oxetane-diols as a new type of reactive monomers for Lipase B (CALB) and demonstrates the possibilities of enzymatic polycondensation as an orthogonal strategy for acid-labile diols. Additionally, the characterization, physical properties, and crosslinking are investigated.

    4. Morphology Prediction in HDPE/PA-6/EVOH Ternary Blends: Defining the Role of Elasticity Ratio (pages 1791–1802)

      Mohammad Reza Saeb, Hossein Ali Khonakdar, Meshkat Razban, Seyyed Hassan Jafari, Hamid Garmabi and Udo Wagenknecht

      Version of Record online: 7 AUG 2012 | DOI: 10.1002/macp.201200158

      Thumbnail image of graphical abstract

      The type of morphology in polyethylene (HDPE)-based ternary blends containing PA-6 and EVOH minor components is studied by both predictive models and electron microscopy. Also, the role of elasticity ratio on the size of composite droplets is considered at various temperatures and component ratios.

    5. Synthesis of Triazole-Based Amphiphilic Block Copolymers Containing Carbazole Moiety By RAFT Polymerization (pages 1803–1814)

      Hideharu Mori, Kazunori Ishikawa, Yohei Abiko, Yuya Maki, Atsuhiko Onuma and Makoto Morishima

      Version of Record online: 20 JUL 2012 | DOI: 10.1002/macp.201200176

      Thumbnail image of graphical abstract

      N-Vinyl-1,2,4-triazole (NVTri), which is a nonconjugated N-vinyl monomer having a basic aromatic heterocycle, was polymerized by reversible addition– fragmentation chain transfer (RAFT) polymerization. Chain extension from poly(NVTri) to N-vinyl carbazole (NVC) could be well controlled under suitable conditions and provided novel amphiphilic block copolymers. We also investigated assembled structures and optoelectronic properties of the block copolymers.

    6. Macroporous Polymer Beads and Monoliths From Pickering Simple, Double, and Triple Emulsions (pages 1815–1832)

      Amro K. F. Dyab

      Version of Record online: 27 JUL 2012 | DOI: 10.1002/macp.201200172

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      The fabrication of various polymeric materials based on Pickering emulsion templates is reported. Macroporous polymer beads and monoliths are prepared and functionalized using different materials such as magnetite, quantum dots, zinc metal particles, and natural sporopollenin microcapsules. A new porous hierarchical polymer foam from polymerization of Pickering triple emulsions is presented.

    7. Polystyrene Solutions: Characterization of Molecular Motional Modes by Spectrally Resolved Low- and High-Field NMR Relaxation (pages 1833–1840)

      Markus Cudaj, Judith Cudaj, Thorsten Hofe, Burkhard Luy, Manfred Wilhelm and Gisela Guthausen

      Version of Record online: 8 AUG 2012 | DOI: 10.1002/macp.201200092

      Thumbnail image of graphical abstract

      Physical properties of dilute polymer solutions are of interest, for example, in chromatography and reaction monitoring. With MR-NMR, the characterization of molecular mobility can be achieved with sufficient spectroscopic resolution at low magnetic field. Diffusion measurements and frequency-dependent 1H longitudinal relaxation studies give insight into the complex translational and rotational molecular motional modes and their frequency dependence of polystyrene in CDCl3.

    8. Preparation of AB2 Monomers and the Corresponding Hyperbranched Polyureas in a One-Pot Procedure (pages 1841–1850)

      Fei Xiang, Ton Loontjens, Erik Geladé and Joop Vorenkamp

      Version of Record online: 18 JUL 2012 | DOI: 10.1002/macp.201200138

      Thumbnail image of graphical abstract

      A one-pot technique is described for preparing AB2 monomers and the corresponding hyperbranched polyureas. Each polymer chain comprises a secondary amino group at the focal point and numerous blocked isocyanates at the end of the polymer branches. Mark- Houwink coefficients of 0.30 and branching frequencies of 0.30 demonstrate a nearly ideal hyperbranched topology.

    9. Facile and Efficient Synthesis of Fluorescence-Labeled RAFT Agents and Their Application in the Preparation of α-,ω- and α,ω-End-Fluorescence-Labeled Polymers (pages 1851–1862)

      Ruiwei Guo, Xingxing Wang, Chungang Guo, Anjie Dong and Jianhua Zhang

      Version of Record online: 8 AUG 2012 | DOI: 10.1002/macp.201200258

      Thumbnail image of graphical abstract

      A facile and efficient approach to prepare fluorescence-labeled RAFT agents on the basis of a nucleophilic substitution reaction between commercially available 2-(4-(chloromethyl)phenyl)benzoxazole (CMPB) and excessive carbodithioate or dithiocarbamate salts. The advantages include the mild reaction conditions, relatively high yields, and readily available dyes.

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