Macromolecular Rapid Communications

Cover image for Vol. 31 Issue 20

October 18, 2010

Volume 31, Issue 20

Pages 1747–1826

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Review
    5. Communications
    1. Macromol. Rapid Commun. 20/2010

      Wu Aik Yee, Shanxin Xiong, Guoqiang Ding, Chien Anh Nguyen, Pooi See Lee, Jan Ma, Masaya Kotaki, Ye Liu and Xuehong Lu

      Article first published online: 20 OCT 2010 | DOI: 10.1002/marc.201090055

      Thumbnail image of graphical abstract

      Cover: The image presents electrospun PDVF membranes treated with supercritical CO2. The treatment induces the formation of nanopores and extended-chain β crystallites in the nanofibers. It also creates interfiber junctions, resulting in a remarkable improvement of the mechanical properties, enabling the membranes to retain their shape after ionic-liquid (IL) swelling. The ionic conductivity of the IL-loaded membrane is close to that of the neat IL. Further information can be found in the article by W. A. Yee, S. Xiong, G. Ding, C. A. Nguyen, P. S. Lee, J. Ma, M. Kotaki, Y. Liu, and X. Lu*on page 1779.

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Review
    5. Communications
    1. Macromol. Rapid Commun. 20/2010 (pages 1747–1750)

      Article first published online: 20 OCT 2010 | DOI: 10.1002/marc.201090056

  3. Review

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Review
    5. Communications
    1. Modification of Polysaccharides Through Controlled/Living Radical Polymerization Grafting—Towards the Generation of High Performance Hybrids (pages 1751–1772)

      Morgan Tizzotti, Aurelia Charlot, Etienne Fleury, Martina Stenzel and Julien Bernard

      Article first published online: 8 JUL 2010 | DOI: 10.1002/marc.201000072

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      Polysaccharide-based hybrids using controlled radical polymerizations are reviewed in this article. Strategies to generate macromolecular materials with controlled chemical composition and architecture (in homogeneous medium) or to graft functionalize a range of polysaccharide surfaces (in heterogeneous medium) in a controlled manner are discussed in detail. In an effort to provide a basis for the further development of this category of materials, the most promising applications of these polysaccharide-based hybrids are highlighted.

  4. Communications

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Review
    5. Communications
    1. Phase Transition and Phase Transformation in Block Copolymer Nanoparticles (pages 1773–1778)

      Takeshi Higuchi, Kiwamu Motoyoshi, Hidekazu Sugimori, Hiroshi Jinnai, Hiroshi Yabu and Masatsugu Shimomura

      Article first published online: 3 AUG 2010 | DOI: 10.1002/marc.201000299

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      Block copolymer nanoparticles were prepared from the mixture solutions containing good/poor solvents by a simple evaporation process. Thermal annealing induced the disorder–order phase transition and order–order phase transformation in the block copolymer nanoparticles, even though the annealing temperature is lower than that of one polymer segment. The unusual thermal behaviors suggest that the glass transition temperature of the block copolymer is decreased by the effect of nanoparticle.

    2. Supercritical Carbon Dioxide-Treated Electrospun Poly(vinylidene fluoride) Nanofibrous Membranes: Morphology, Structures and Properties as an Ionic-Liquid Host (pages 1779–1784)

      Wu Aik Yee, Shanxin Xiong, Guoqiang Ding, Chien Anh Nguyen, Pooi See Lee, Jan Ma, Masaya Kotaki, Ye Liu and Xuehong Lu

      Article first published online: 8 JUL 2010 | DOI: 10.1002/marc.201000201

      Thumbnail image of graphical abstract

      The treatment of electrospun poly(vinylidene fluoride) membranes with supercritical carbon dioxide induces the formation of nanopores and extended-chain β crystallites of small lateral dimensions in the nanofibers. It also creates interfiber junctions so that the treated membranes are able to retain their shape very well after loading with an ionic liquid (IL). The ionic conductivity of the IL-loaded membrane is very close to that of the neat IL.

    3. A Novel Route to Prepare Highly Reactive and Versatile Chromatographic Monoliths (pages 1785–1790)

      Yongqin Lv, Timothy C. Hughes, Xiaojuan Hao, Noel K. Hart, Stuart W. Littler, Xiaoqing Zhang and Tianwei Tan

      Article first published online: 5 AUG 2010 | DOI: 10.1002/marc.201000345

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      Poly(isocyanatoethyl methacrylate-co-methyl methacrylate-co-ethylene glycol dimethacrylate) is developed as a novel, facile, highly reactive and versatile monolithic matrix, which is amenable to surface functionalization by a variety of nucleophilic modifiers, resulting in its utility for a number of chromatography applications. The potential of the monoliths is demonstrated by the separation of a series of compounds, exhibiting high mechanical stability, column efficiency and good repeatability and reproducibility.

    4. The First Example of Main-Chain Cyclic Azobenzene Polymers (pages 1791–1797)

      Xu Xu, Nianchen Zhou, Jian Zhu, Yingfeng Tu, Zhengbiao Zhang, Zhenping Cheng and Xiulin Zhu

      Article first published online: 16 JUL 2010 | DOI: 10.1002/marc.201000218

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      A novel main-chain azobenzene cyclic polymer,cyclic-PEHPA, has been successfully synthesized by ‘click’ cyclization of the α-alkyne-ω-azido heterodifunctional linear precursor (linear-PEHPA), which was synthesized by step-growth polymerization of the 3′-ethynylphenyl[4-hexyl-(2-azido-2-methyl-propionate)phenyl] azobenzene. Because of the absent chain ends, the cyclic-PEHPAs have higher glass transition temperatures than the linear precursors, but almost the same decom- position temperatures. In addition, the obtained cyclic azobenzene polymer cyclic-PEHPA with lower molar mass shows a slightly faster trans–cis–trans photo„isomerization ability than the corresponding linear-PEHPA.

    5. Au/CdS Hybrid Nanoparticles in Block Copolymer Micellar Shells (pages 1798–1804)

      Haeng-Deog Koh, Mohammad Changez and Jae-Suk Lee

      Article first published online: 21 JUL 2010 | DOI: 10.1002/marc.201000214

      Thumbnail image of graphical abstract

      CdS nanoparticles (NPs) embedded in block copolymer micellar cores undergo the core-shell inversion by solvent tuning. Au NPs are spontaneously grown at CdS surfaces. This method leads to formation of Au/CdS hybrid NPs at the micellar shell domain. Also, Au/CdS hollow NPs can be prepared by removing the polymer parts under exposure of oxygen plasma.

    6. Monodispersed Magnetic Polystyrene Beads with Excellent Colloidal Stability and Strong Magnetic Response (pages 1805–1810)

      Mu Niu, Meihong Du, Zhenyu Gao, Chunhui Yang, Xianyong Lu, Ruirui Qiao and Mingyuan Gao

      Article first published online: 4 AUG 2010 | DOI: 10.1002/marc.201000293

      Thumbnail image of graphical abstract

      Monodispersed polystyrene beads incorporated with Fe3O4nanoparticles are prepared via dispersion polymerization. The resultant magnetic beads present well-defined composite structures, excellent colloidal stability and strong magnetic response. After being coated with anti-Salmonella CSA-1 antibody, the magnetic beads show capturing efficiencies of >99.4% in isolating Salmonella sp.

    7. Hyperbranched PEG by Random Copolymerization of Ethylene Oxide and Glycidol (pages 1811–1815)

      Daniel Wilms, Martina Schömer, Frederik Wurm, M. Iris Hermanns, C. James Kirkpatrick and Holger Frey

      Article first published online: 5 AUG 2010 | DOI: 10.1002/marc.201000329

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      Direct copolymerization of ethylene oxide and glycidol has been realized, leading to hyperbranched poly(ethylene glycol) (hbPEG) with branch-on-branch topology and glycerol branching points. The resulting multifunctional hbPEGs with molecular weights up to 49800gmol−1 are amorphous and possess up to 300 hydroxyl end groups. The hyperbranched PEGs are promising for a plethora of applications in biomedicine, pharmaceutics, and cosmetics.

    8. Investigation on RAFT Polymerization of a Y-Shaped Amphiphilic Fluorinated Monomer and Anti-Fog and Oil-Repellent Properties of the Polymers (pages 1816–1821)

      Yun Wang, Qibao Dong, Yanxue Wang, Hu Wang, Guang Li and Ruke Bai

      Article first published online: 21 JUL 2010 | DOI: 10.1002/marc.201000243

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      Solvent-sensitive stimuli-responsive surfaces have potential applications as self-cleaning and anti-fog coatings. A Y-shaped amphiphilic fluorinated monomer has been synthesized and well-defined homopolymers and copolymers containing DMAEMA have been prepared by RAFT polymerization. The surface of the block copolymers simultaneously exhibits excellent hydrophilicity and oleophobicity, which leads to anti-fog and oil-repellent properties.

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      Fatty Acid Derived Monomers and Related Polymers Via Thiol-ene (Click) Additions (pages 1822–1826)

      Oĝuz Türünç and Michael A. R. Meier

      Article first published online: 21 JUL 2010 | DOI: 10.1002/marc.201000291

      Thumbnail image of graphical abstract

      Clicking renewable resources: The castor oil derived platform chemical methyl 10-undecenoate is a very suitable starting material for thiol-ene click reactions. Different functional groups can thus be introduced in an efficient manner to yield renewable monomers. Their polymerization leads to plant oil derived polyesters with good thermal properties, which could probably substitute existing fossil resource based materials.

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