Macromolecular Chemistry and Physics

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Best of Macros 2017 is now online. Click here to read about the selected articles and their authors.

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  1. A New Four-Arm Organosiloxane with Thermopolymerizable Trifluorovinyl ether Groups: Synthesis and Conversion to the Polymer with both Low Dielectric Constant and Low Water Uptake

    Yumeng Xin, Jiajia Wang, Kaikai Jin, Yijie Luo, Junfeng Zhou, Yuanqiang Wang, Jing Sun, Shijun Zheng and Qiang Fang

    Version of Record online: 26 APR 2017 | DOI: 10.1002/macp.201700010

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    A new fluoro-containing polysiloxane showing low dielectric constant, low water uptake, high transparency, and high thermostability is successfully synthesized by direct thermocrosslinking of a four-arm organosiloxane having thermopolymerizable trifluorovinyl ether groups.

  2. Structure Formation of Binary Blends of Amphiphilic Block Copolymers in Solution and in Bulk

    Maryam Radjabian, Clarissa Abetz, Birgit Fischer, Andreas Meyer, Brigitte Lademann and Volker Abetz

    Version of Record online: 25 APR 2017 | DOI: 10.1002/macp.201600587

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    Solutions of block copolymer blends show mixed microdomains above the critical micelle concentration and show a long period in the bulk, which depends on the number averaged molecular weight with a power law. This scaling behavior differs from the scaling behavior of the surface structure of integral asymmetric membranes made from similar blends.

  3. ABA and BAB Triblock Copolymers Based on 2-Methyl-2-oxazoline and 2-n-Propyl-2-oxazoline: Synthesis and Thermoresponsive Behavior in Water

    Anna Zahoranová, Miroslav Mrlík, Katarína Tomanová, Juraj Kronek and Robert Luxenhofer

    Version of Record online: 18 APR 2017 | DOI: 10.1002/macp.201700031

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    The preparation of triblock copolymers composed of hydrophilic 2-methyl-2-oxazoline and thermoresponsive 2-n-propyl-2-oxazoline is described. The copolymers exhibit temperature-driven micellization and aggregation, as well as temperature-induced increase in viscosity. The thermoresponsive behavior in water depends on composition, molar mass, concentration, and position of blocks.

  4. Coordinative Layer-by-Layer Assembly of Thin Films Based on Metal Ion Complexes of Ligand-Substituted Polystyrene Copolymers and Their Use as Separation Membranes

    Gülara Krieger and Bernd Tieke

    Version of Record online: 18 APR 2017 | DOI: 10.1002/macp.201700052

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    Polystyrene copolymers with terpyridine and bis(methylbenzimidazolyl)pyridine ligands in the side chain are studied on metal ion coordination in solution and coordinative sequential assembly of films and membranes. Permeation across the membranes and separation of ions and aromatic molecules are investigated.

  5. Branching Analysis of Comb-Shaped Polystyrene with Long Chain Branches

    Sanghoon Lee and Taihyun Chang

    Version of Record online: 18 APR 2017 | DOI: 10.1002/macp.201700087

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    Chain branching analyses are carried out with well-defined PS random combs with 1-4 long branches in a good and a theta solvent, respectively. The relationship of g′ = gε (g[TRIPLE BOND] (Rg2)B/(Rg2)L, g[TRIPLE BOND] [η]B/[η]L) works reasonably well with ε ~1 in tetrahydrofuran and ~0.66 in diethyl malonate while the theoretical grw does not agree well with gexp.

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