Macromolecular Chemistry and Physics

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Recently Published Articles

  1. Relationship Between the Free Radical Polymerization Rates of Methacrylates and the Chemical Properties of their Monomeric Radicals

    Sesil Agopcan Cinar, Frank De Proft, Duygu Avci, Viktorya Aviyente and Freija De Vleeschouwer

    Article first published online: 25 NOV 2014 | DOI: 10.1002/macp.201400484

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    The polymerization rate Rp of alkyl methacrylates can be correlated with the stability and the electrophilicity of their monomeric radicals, two very important properties in radical chemistry. A higher Rp can be obtained via an increase of the stability or a decrease of the nucleophilic character of the monomeric radical. Moreover, polar effects become more important at higher radical stability.

  2. Glycopolymer Polyelectrolyte Multilayers Composed of Heparin and Maltose-Modified Poly(ethylene imine) as a Strong/Weak Polyelectrolyte System for Future Drug Delivery Coatings: Influence of pH and Sugar Architecture on Growth of Multilayers and Multilayer Swelling and Stability

    Samaa Salem, Martin Müller, Bernhard Torger, Andreas Janke, Klaus-Jochen Eichhorn, Brigitte Voit and Dietmar Appelhans

    Article first published online: 22 NOV 2014 | DOI: 10.1002/macp.201400428

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    Biocompatible branched and linear sugar architectures, cationic dendritic ­glycopolymer, and anionic heparin are used to fabricate polyelectrolyte multilayers (PEMs) by the layer-by-layer method. The physiological stability of PEMs, tailored by pH-dependent polyelectrolyte deposition on the PEM surface, is needed for future PEM use in biomedical applications (e.g., sensors or drug-delivery systems).

  3. pH-Sensitive Drug-Conjugates on Water-Soluble Polymer Frameworks

    Abu Bakkar Siddique, Youngjun Cho, Yujin Kim, Sung Hoon Bahng, Sung Woo Kim, Jae Yeol Lee, Ho-Jung Kang, Sehoon Kim, You Han Bae and Jungahn Kim

    Article first published online: 20 NOV 2014 | DOI: 10.1002/macp.201400457

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    A potent synthetic methodology to generate a useful intermediate for the preparation of pH-sensitive polymeric pro-drugs by a combination of living anionic block polymerization of ethylene oxide (EO) and N-phenylmaleimide (N-PMI) and the Gabriel process is introduced. Hydrazinolysis of the resulting poly(ethylene oxide)-block-poly(N-PMI) (PEO-b-PN-PMI) using hydrazine under acidic conditions leads to the production of the corresponding PEO-based frameworks with hydrazide (HZ) groups. The HZ groups are found to effect the formation of the acid-sensitive bond under neutral conditions (pH = 7.2).

  4. Bioinspired Polymeric Nanocomposites for Regenerative Medicine

    James K. Carrow and Akhilesh K. Gaharwar

    Article first published online: 18 NOV 2014 | DOI: 10.1002/macp.201400427

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    Designing bioinspired nanomaterials for tissue-engineering applications requires a fundamental understanding of the interactions between polymers, nanostructures, and cells. Biomimetic structures composed of fibrous architectures are discussed, the emerging trends in designing complex nanocomposites with multiple functionalities are assessed and finally, some of the most critical challenges that come with the design and fabrication of bioinspired polymeric nanocomposites are highlighted.

  5. Dynamic Response of Anchored Poly(N-isopropylacrylamide-co-methacrylic acid-co-benzophenone methacrylate) Terpolymer Hydrogel Layers to Physicochemical Stimuli

    Maria Gianneli, Ilke Anac, Robert Rostkamp, Bernhard Menges, Benoit Loppinet, Uli Jonas, Wolfgang Knoll and George Fytas

    Article first published online: 18 NOV 2014 | DOI: 10.1002/macp.201400361

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    The structure and dynamics in photo-crosslinked, surface-attached films (≈1 μm dry thickness) of a poly(N-isopropylacryl­amide) (PNIPAAm)-based terpolymer at different temperature and salt contents are reported. The dynamics respond distinctly to structural changes induced by increasing temperature or added salt.