Macromolecular Chemistry and Physics

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Recently Published Articles

  1. Effect and Evolution of Nanostructural Complexity in Sensitive Polymer Gels

    Sebastian Seiffert

    Article first published online: 31 OCT 2014 | DOI: 10.1002/macp.201400410

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    Sensitive and supramolecular polymer gels can be selectively swollen and deswollen or gelled and degelled in response to external stimulation; to truly benefit from this ability, the impact of nanometer-scale structural heterogeneity in the constituent polymer networks must be understood and accounted for in materials design.

  2. Programmable Polymer Memory Device Based on Hydrophilic Polythiophene and Poly(ionic liquid) Electrolyte

    Yueqin Li, Yang Song, Xiyu Zhang, Xiangxiang Wu, Fang Wang and Zhuye Wang

    Article first published online: 31 OCT 2014 | DOI: 10.1002/macp.201400432

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    Three-terminal memory devices based on hydrophilic polythiophene (P3CPT) and poly(ionic liquid) (PVBIT) electrolyte are fabricated through a simple solution-processing technique. Research on memory characteristics indicates that this system possesses very stable ON- and OFF-states under the low operating voltage of ±3 V. The write–read–erase–read cycles can be up to 100 and the retention is over 1.6 × 104 s.

  3. Effects of Isophorone Diisocyanate on the Thermal and Mechanical Properties of Shape-Memory Polyurethane Foams

    Sayyeda M. Hasan, Jeffery E. Raymond, Thomas S. Wilson, Brandis K. Keller and Duncan J. Maitland

    Article first published online: 30 OCT 2014 | DOI: 10.1002/macp.201400407

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    Porous, low-density shape-memory polymers are developed with tunable transition temperatures and actuation rates by altering the polymer backbone from trimethyl-1,6-hexamethylene diisocyanate (a) to isophorone diisocyanate (b) at varying concentrations.

  4. LED-Induced Polymerization (385, 405, and 455 nm) Using Star-Shaped Tris(4-(thiophen-2-yl)phenyl)amine Derivatives as Light-Harvesting Photoinitiators

    Jing Zhang, Xavier Sallenave, Thanh-Tuan Bui, Frédéric Dumur, Pu Xiao, Bernadette Graff, Didier Gigmes, Jean Pierre Fouassier and Jacques Lalevée

    Article first published online: 29 OCT 2014 | DOI: 10.1002/macp.201400403

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    Two new light-harvesting photoinitiators for radical and cationic polymerizations under near-UV and visible light emitting diodes (LEDs) are proposed. These systems are also interesting for overcoming oxygen inhibition. The photo­chemical mechanisms are studied by steady-state photolysis, electron spin resonance spin trapping, fluorescence, cyclic voltammetry, and laser flash photolysis techniques.

  5. Characterization of the Chemical Composition Distribution of Poly(n-butyl acrylate-stat-acrylic acid)s

    Helena Maier, Frank Malz and Wolfgang Radke

    Article first published online: 29 OCT 2014 | DOI: 10.1002/macp.201400399

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    A chromatographic method is presented which allows poly(n-butyl acrylate-stat-acrylic acid)s to be separated with respect to the content of acrylic acid over the complete composition range. The applied SEC-gradient allows the determination of the chemical composition distribution. Samples of similar compositions prepared in different solvents exhibit differences in chemical composition distribution.

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