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791 Aktuelle Fachpublikationen zum Thema temperature

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Low Temperature Thermochromic Polydiacetylenes: Design, Colorimetric Properties, and Nanofiber Formation

05.02.2016 | In Sung Park; Hye Jin Park; Woomin Jeong; Jihye Nam; Youngjong Kang; Kayeong Shin; Hoeil Chung; Jong-Man Kim, Macromolecules, 2016

Owing to their stimulus responsive color changing properties, polydiacetylenes (PDAs) have been extensively investigated as colorimetric sensors. Thermochromic properties of PDAs have been the central focus of a number of investigations that were aimed not only at gaining a fundamental ...

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Ultrasensitive pH-Induced Water Solubility Switch Using UCST Polymers

04.02.2016 | Hu Zhang; Shengwei Guo; Weizheng Fan; Yue Zhao, Macromolecules, 2016

For some thermosensitive polymers, the absence of an upper critical solution temperature (UCST) in water in an accessible temperature range (say, 5–90 °C) can be attributed to the influence of charged groups in the polymer structure. This property was exploited in the present study to achieve ...

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Hierarchical Sol–Gel Transition Induced by Thermosensitive Self-Assembly of an ABC Triblock Polymer in an Ionic Liquid

02.02.2016 | Yuzo Kitazawa; Takeshi Ueki; Lucas D. McIntosh; Saki Tamura; Kazuyuki Niitsuma; Satoru Imaizumi; Timothy P. Lodge; M ..., Macromolecules, 2016

We investigated a hierarchical morphology change and accompanying sol–gel transition using a doubly thermosensitive ABC-triblock copolymer in an ionic liquid (IL). The triblock copolymer contains two different lower critical solution temperature (LCST) thermosensitive polymers, poly(benzyl ...

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Multication Side Chain Anion Exchange Membranes

25.01.2016 | Liang Zhu; Jing Pan; Ying Wang; Juanjuan Han; Lin Zhuang; Michael A. Hickner, Macromolecules, 2016

Anion exchange membrane fuel cells (AEMFCs) have been developed as promising energy conversion devices for stationary and mobile applications due to their potentially low cost. To realize high-performance AEMFCs, new polymeric membranes are needed that are highly conductive and chemically stable. ...

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Ultrahigh Tg Epoxy Thermosets Based on Insertion Polynorbornenes

25.01.2016 | Basile Commarieu; Jonathan Potier; Moubarak Compaore; Sylvain Dessureault; Brian L. Goodall; Xu Li; Jerome P. Claverie, Macromolecules, 2016

Thermosetting materials (thermosets) are widely used organic materials derived from 3D-network forming monomers. Achieving high glass transition temperature (Tg) thermosets is often a challenging task due to the complexity of designing efficiently and cheaply monomers which are rigid enough to ...

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Stereoregular High-Density Bottlebrush Polymer and Its Organic Nanocrystal Stereocomplex through Triple-Helix Formation

21.01.2016 | Jing M. Ren; Kenji Ishitake; Kotaro Satoh; Anton Blencowe; Qiang Fu; Edgar H. H. Wong; Masami Kamigaito; Greg G. Qiao, Macromolecules, 2016

We report the synthesis of a well-defined molecular bottlebrush polymer with stereoregular side chains (i.e., syndiotactic PMMA). The simultaneous control over the molecular weight, side-chain tacticity, and architecture allows the macromolecule to stereocomplex with the complementary linear ...

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Random Copolymers from Polyamide 11 and Polyamide 12 by Reactive Extrusion: Synthesis, Eutectic Phase Behavior, and Polymorphism

20.01.2016 | Lien Telen; Peter Van Puyvelde; Bart Goderis, Macromolecules, 2016

Random copolymers from polyamide 11 (PA11) and polyamide 12 (PA12) were obtained from the parent homopolymers by transamidation reactions during high-temperature reactive extrusion. Concomitantly, the product molecular weight increased by postcondensation reactions. With both species being ...

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Conformation Transitions of Thermoresponsive Dendronized Polymers across the Lower Critical Solution Temperature

19.01.2016 | Cheng Zhang; Hui Peng; Wen Li; Lianxiao Liu; Simon Puttick; James Reid; Stefano Bernardi; Debra J. Searles; Afang Zh ..., Macromolecules, 2016

Thermoresponsive dendronized polymers, displaying remarkable phase behavior, are currently being studied for their potential exploitation as polymeric sensors and biomaterials. Understanding the conformational transitions occurring at the LCST is essential for improved design and translation of ...

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Nitroxide-Mediated Polymerization of Vinyl Chloride at Low Temperature: Kinetic and Computational Studies

14.01.2016 | Carlos M. R. Abreu; Patrícia V. Mendonça; Arménio C. Serra; Benjamin B. Noble; Tamaz Guliashvili; Julien Nicolas; Mi ..., Macromolecules, 2016

The synthesis of poly(vinyl chloride) (PVC) by nitroxide-mediated polymerization (NMP) using the SG1-based BlocBuilder alkoxyamine at low temperature (30 and 42 °C) is reported. The reaction system was studied regarding the nature of the solvent, the monomer-to-solvent ratio, the polymerization ...

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An Indacenodithiophene–Quinoxaline Polymer Prepared by Direct Arylation Polymerization for Organic Photovoltaics

14.01.2016 | Shanshan Chen; Kyu Cheol Lee; Zhi-Guo Zhang; Dong Suk Kim; Yongfang Li; Changduk Yang, Macromolecules, 2016

Seeking preparation of high-performance donor–acceptor (D–A) polymers based on bare thiophene units in a more environmentally friendly and faster way, we have carried out a direct arylation polymerization (DAP) of two starting β-unprotected thiophene-containing monomers (indacenodithiophene (IDT) ...

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