Macromolecular Chemistry and Physics

Cover image for Vol. 213 Issue 19

October 15, 2012

Volume 213, Issue 19

Pages 1981–2090

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Macromol. Chem. Phys. 19/2012 (page 1981)

      Robert Dorresteijn, Robert Haschick, Markus Klapper and Klaus Müllen

      Version of Record online: 4 OCT 2012 | DOI: 10.1002/macp.201290059

      Thumbnail image of graphical abstract

      Front Cover: Polylactide nanoparticles are prepared in non-aqueous emulsion via ring-opening polymerization of lactide in one step. Due to the water-sensitivity of the catalyst, the polymerization must be conducted in a water-free system. The obtained polylactide nanoparticles possess a narrow particle size distribution (see SEM and DLS images). Further details can be found in the article by R. Dorresteijn, R. Haschick, M. Klapper,* and K. Müllen on page 1996.

  2. Back Cover

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Macromol. Chem. Phys. 19/2012 (page 2092)

      Jiatao Yan, Xiaoqian Zhang, Xiuqiang Zhang, Kun Liu, Wen Li, Peiyi Wu and Afang Zhang

      Version of Record online: 4 OCT 2012 | DOI: 10.1002/macp.201290060

      Thumbnail image of graphical abstract

      Back Cover: Inclusion complexation of a cyclodextrin trimer with oligoethylene glycol-based dendritic guests leads to the formation of supramolecular dendrimers, which show characteristic thermoresponsive behavior with sharp phase transitions and small hysteresis. For more information, see the article by J. Yan, X. Zhang, X. Zhang, K. Liu, W. Li,* P. Wu,* and A. Zhang on page 2003.

  3. Masthead

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Macromol. Chem. Phys. 19/2012

      Version of Record online: 4 OCT 2012 | DOI: 10.1002/macp.201290061

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
  5. Talents & Trends

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Combinations of Elements: a New Paradigm for Fire Retardancy (pages 1987–1995)

      Thirumal Mariappan and Charles A. Wilkie

      Version of Record online: 23 AUG 2012 | DOI: 10.1002/macp.201200363

      Thumbnail image of graphical abstract

      The presence of a nanodimensional material, together with a conventional fire retardant, leads to increased char formation and better fire retardancy.

  6. Full Papers

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Poly(L-lactide) Nanoparticles via Ring-Opening Polymerization in Non-aqueous Emulsion (pages 1996–2002)

      Robert Dorresteijn, Robert Haschick, Markus Klapper and Klaus Müllen

      Version of Record online: 14 AUG 2012 | DOI: 10.1002/macp.201200345

      Thumbnail image of graphical abstract

      Non-aqueous emulsions are used to generate nanoparticles by ring-opening polymerization. L-lactide is polymerized in this novel emulsion—consisting of two immiscible organic aprotic solvents stabilized by a block copolymer—to generate poly(L-lactide) nanoparticles. The preparation is conducted in one step catalyzed by a N-heterocyclic carbene at very mild conditions.

    2. Thermoresponsive Supramolecular Dendrimers via Host–Guest Interactions (pages 2003–2010)

      Jiatao Yan, Xiaoqian Zhang, Xiuqiang Zhang, Kun Liu, Wen Li, Peiyi Wu and Afang Zhang

      Version of Record online: 10 AUG 2012 | DOI: 10.1002/macp.201200320

      Thumbnail image of graphical abstract

      Inclusion complexation of cyclodextrins with oligoethylene glycol-based dendritic guests leads to the formation of supramolecular dendrimers, which show characteristic thermoresponsive behavior with sharp phase transitions and small hystereses. Induced by the dehydration and collapse, these supramolecular dendrimers start to decompose at a temperature depending on the hydrophilicity of the guests.

  7. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Macromol. Chem. Phys. 19/2012 (page 2011)

      Raffaele Ferrari, Yingchuan Yu, Marco Lattuada, Giuseppe Storti, Massimo Morbidelli and Davide Moscatelli

      Version of Record online: 4 OCT 2012 | DOI: 10.1002/macp.201290058

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      Frontispiece: Synthesis of PEGylated, poly(lactic acid) (PLA)-based nanoparticles (NPs), without the use of any surfactant or organic solvent, is shown. Monodispersed NPs, stable in physiological conditions and with sizes down to 90 nm, have been obtained through the direct semibatch emulsion copolymerization of modified PLA chains in the presence of vinyl-terminated PEG that acts as a surfmer. For further details, see the article by R. Ferrari, Y. Yu, M. Lattuada, G. Storti, M. Morbidelli, and D. Moscatelli* on page 2012.

  8. Full Papers

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Talents & Trends
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Controlled PEGylation of PLA-Based Nanoparticles (pages 2012–2018)

      Raffaele Ferrari, Yingchuan Yu, Marco Lattuada, Giuseppe Storti, Massimo Morbidelli and Davide Moscatelli

      Version of Record online: 13 AUG 2012 | DOI: 10.1002/macp.201200368

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      Novel PEGylated PLA-based biodegradable monodispersed nanoparticles with sizes down to 25 nm have been produced via monomer-starved semibatch emulsion polymerization. The developed process does not require the use of any organic solvent or surfactant, and it is therefore ideal for biomedical applications.

    2. Activation–Deactivation Equilibrium Associated With Iron-Mediated Atom-Transfer Radical Polymerization up to High Pressure (pages 2019–2026)

      Hendrik Schroeder, Denis Yalalov, Michael Buback and Krzysztof Matyjaszewski

      Version of Record online: 21 AUG 2012 | DOI: 10.1002/macp.201200244

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      The activation–deactivation equilibrium associated with iron-mediated atom-transfer radical polymerization has been determined up to 4000 bar via online FT-VIS/NIR spectroscopy for binary FeBr2/α-bromoester model systems in the absence of monomer. Other than with Cu-mediated systems, high pressure reduces the equilibrium constant.

    3. Poly(phenylnorbornene) from Ring-Opening Metathesis and Its Hydrogenated Derivatives (pages 2027–2033)

      Sheng Li, Adam B. Burns, Richard A. Register and Andrew Bell

      Version of Record online: 28 AUG 2012 | DOI: 10.1002/macp.201200294

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      Novel polymers of 5-phenyl-2-norbornene (PhNb) and 5-cyclohexyl-2-norbornene (CyNb) are synthesized using ring-opening metathesis polymerization (ROMP). Though the ROMP initiator system and monomer endo/exo ratio have a negligible effect on the polymers' glass transition temperatures (Tg), hydrogenation of the side group consistently produces a 14 °C increase in Tg, whereas hydrogenation of the backbone produces a 17 °C decrease.

    4. Effect of Nanoclay on in situ Preparation of “All Acrylate” ABA Triblock Copolymers via ATRP and Their Morphology (pages 2034–2043)

      Nikhil K. Singha, Amalin Kavitha, Dhruba J. Haloi, Prithwiraj Mandal, Andreas Janke, Dieter Jehnichen, Hartmut Komber and Brigitte Voit

      Version of Record online: 4 SEP 2012 | DOI: 10.1002/macp.201200174

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      The preparation of organic/inorganic hybrid material has drawn great attention in recent years. Here, the preparation and characterization of “all acrylate” triblock copolymers and their clay nanocomposites via in situ ATRP is described.

    5. Microstructure-Controllable Graphene Oxide Hydrogel Film Based on a pH-Responsive Graphene Oxide Hydrogel (pages 2044–2051)

      Si-Yong Qin, Xiang-Ji Liu, Ren-Xi Zhuo and Xian-Zheng Zhang

      Version of Record online: 22 AUG 2012 | DOI: 10.1002/macp.201200281

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      A pH-responsive self-assembled graphene oxide hydrogel is fabricated by simply suspending the graphene oxide in water without any additional processing steps. The microstructure of the grapheme oxide film based on the hydrogel can be tailored via the dehydration method used, as well as by varying the concentration.

    6. Oxidant-Dependent REDOX Responsiveness of Polysulfides (pages 2052–2061)

      Paolo Carampin, Enrique Lallana, Jureerat Laliturai, Sabrina C. Carroccio, Concetto Puglisi and Nicola Tirelli

      Version of Record online: 28 AUG 2012 | DOI: 10.1002/macp.201200264

      Thumbnail image of graphical abstract

      Organic polysulfides are oxidation-sensitive materials. Herein is shown that they exhibit different responsiveness to different oxidants: the thioethers of poly(propylene sulfide) are quantitatively converted to sulfoxides when treated with hydrogen peroxide, while sulfones are generated with the more powerful hypochlorite. This has a profound influence in the stability and toxicity of the oxidation products.

    7. Droplet-in-Droplet Polymer Blend Microstructures: a Potential Route Toward the Recycling of Co-mingled Plastics (pages 2062–2074)

      Pierre Le Corroller and Basil D. Favis

      Version of Record online: 4 SEP 2012 | DOI: 10.1002/macp.201200297

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      Herein a new concept is studied wherein polymer segregation is used to locate multiple phases within one of two major phases. From microscopic characterization, it can be clearly seen that the PS/PMMA/PC composite droplet forms a hierarchical structure where PS encapsulates PMMA, which, in turn, engulfs the PC, all of which is encapsulated by the PP phase. This approach has potential as a novel route toward the recycling of co-mingled plastics.

    8. Functionalized Nanoporous Thin Films From Blends of Block Copolymers and Homopolymers Interacting via Hydrogen Bonding (pages 2075–2080)

      Cé Guinto Gamys, Alexandru Vlad, Olivier Bertrand and Jean-François Gohy

      Version of Record online: 27 AUG 2012 | DOI: 10.1002/macp.201200255

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      Taking advantage of the presence of hydrogen bonds between poly(acrylic acid) (PAA) and poly(ethylene oxide) (PEO), blends of poly(acrylic acid)-block-polystyrene (PAA-b-PS) copolymers and PEO homopolymers are used to prepare nanoporous PS thin films with cavities decorated of PAA chains.

    9. Manipulating the Crystallization of Methanofullerene Thin Films with Polymer Additives (pages 2081–2090)

      Lidong Zheng, Jiangang Liu, Yue Sun, Yan Ding and Yanchun Han

      Version of Record online: 28 AUG 2012 | DOI: 10.1002/macp.201200341

      Thumbnail image of graphical abstract

      PCBM polycrystalline films made up of well-connected domains and isolated spherulites with tunable size are produced with the assistance of polymer additives (PS, P3HT, and PMMA) and thermal annealing. The additives are found to have a depressing effect on PCBM nucleation in the nucleation stage and limit the PCBM molecular diffusion in the growth stage.

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