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2.234 Aktuelle Fachpublikationen zum Thema temperature

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Permeability of Rubbery and Glassy Membranes of Ionic Liquid Filled Polymersome Nanoreactors in Water

20.11.2015 | Soonyong So; Letitia J. Yao; Timothy P. Lodge, Journal of Physical Chemistry B, 2015

Nanoemulsion-like polymer vesicles (polymersomes) having ionic liquid interiors dispersed in water are attractive for nanoreactor applications. In a previous study, we demonstrated that small molecules could pass through rubbery polybutadiene membranes on a time scale of seconds, which is ...


Room‐temperature dynamic quasi‐elastic mechanical behavior of a Zr–Cu–Fe–Al bulk metallic glass

19.11.2015 | V. Yu. Zadorozhnyy, M. Yu. Zadorozhnyy, A. Yu. Сhuryumov, S. V. Ketov, I. S. Golovin, D. V. Louzguine‐Luzgin, physica status solidi (a), 2015

The paper represents storage modulus and internal friction modulation upon cyclic loading of Zr61Cu27Fe2Al10 bulk metallic glassy samples within quasi‐reversible deformation regime. The structure of the samples was studied by X‐ray diffraction and transmission electron microscopy including ...


Preparation of a CuInS2 Nanoparticle Ink and Application in a Selenization‐Free, Solution‐Processed Superstrate Solar Cell

19.11.2015 | Amir Hossein Cheshme Khavar, Ali Reza Mahjoub, Fariba Tajabadi, Mehdi Dehghani, Nima Taghavinia, European Journal of Inorganic Chemistry, 2015

Abstract We report a study on chalcopyrite solar cells fabricated by low‐cost, nonvacuum, and selenization‐free methods. Superstrate‐type CuInS2 (CIS) thin‐film solar cells were prepared by sequential ink deposition. The CIS film was formed from a stable low‐carbon ink, which was synthesized ...


Electrical properties of polyimide composite films containing TiO2 nanotubes

14.11.2015 | Marius Andrei Olariu, Corneliu Hamciuc, Lidia Okrasa, Elena Hamciuc, Lubomir Dimitrov, Yuri Kalvachev, Polymer Composites, 2015

A study on the dielectric behavior of polyimide composite films containing different amounts of TiO2 nanotubes (TNs) was performed. The films were prepared by casting solutions resulting from direct mixing of a poly(amic acid) and TNs onto glass plates, followed by thermal imidization. The ...


Novel propargyl‐substituted azo‐coupled phenolic resins

12.11.2015 | Denis Kalugin, Denis Luchinkin, Sergey Nechausov, Artem Malakho, Alexey Rogozin, Nikita Garadja, Polymers for Advanced Technologies, 2015

Novel propargyl that contains phenolic resins via azo‐coupling reaction was synthesized. Peculiarities of curing process were investigated by differential scanning calorimetry analysis. Polymerization of resins with azo groups was estimated to be affected by radicals obtained at resin ...


Solid-State Dynamic Nuclear Polarization at 9.4 and 18.8 T from 100 K to Room Temperature

12.11.2015 | Moreno Lelli; Sachin R. Chaudhari; David Gajan; Gilles Casano; Aaron J. Rossini; Olivier Ouari; Paul Tordo; Anne Les ..., Journal of the American Chemical Society, 2015

Efficient dynamic nuclear polarization (DNP) in solids, which enables very high sensitivity NMR experiments, is currently limited to temperatures of around 100 K and below. Here we show how by choosing an adequate solvent, 1H cross effect DNP enhancements of over 80 can be obtained at 240 K. To ...


Temperature-Dependent Dynamics of Polyalkylthiophene Conjugated Polymers: A Combined Neutron Scattering and Simulation Study

09.11.2015 | Anne A. Y. Guilbert; Antonio Urbina; Jose Abad; Carlos Díaz-Paniagua; Francisco Batallán; Tilo Seydel; Mohamed Zbiri ..., Chemistry of Materials, 2015

The dynamics of conjugated polymers are known to influence the performance of optoelectronic devices. Polyalkylthiophenes are a widely studied class of conjugated polymers, which exhibit a glass transition around room temperature and consequently are sensitive to temperature variations. We ...


Synthesis and Properties of Side‐Chain Liquid Crystalline Polypeptides Bearing Various Alkyl Spacers and Oligo‐Ethylene‐Glycol Tails

06.11.2015 | Dan Liu, Qiulin Yuan, Ying Ling, Haoyu Tang, Macromolecular Chemistry and Physics, 2015

A series of polypeptides bearing various alkyl (i.e., propyl, hexyl, or octyl) spacers, biphenyl mesogens, and oligo‐ethylene‐glycol (OEG) tails (i.e., PPLG26‐BPOEG m, PHLG34‐BPOEGm, and POLG32‐BPOEGm [m = 3 or 7]) has been synthesized via 1,3‐dipolar cycloaddition reactions with quantitative ...


Application of Tammann’s Two-Stage Crystal Nuclei Development Method for Analysis of the Thermal Stability of Homogeneous Crystal Nuclei of Poly(ethylene terephthalate)

04.11.2015 | René Androsch; Christoph Schick; Alicyn Marie Rhoades, Macromolecules, 2015

Tammann’s two-stage crystal nuclei development method has been applied to gain information about the kinetics of formation and the stability of homogeneous crystal nuclei in poly(ethylene terephthalate). The method requires rapid cooling of the relaxed melt to different nucleation temperatures ...


Renewable thermoplastic multiphase systems from dimer fatty acids, with mineral microfillers

03.11.2015 | Marie Reulier, Rodrigue Matadi Boumbimba, Damien Rasselet, Luc Avérous, Journal of Applied Polymer Science, 2015

ABSTRACT Renewable thermoplastic blends based on polyurethane (TPU) and polyamide (DAPA) obtained from dimers of fatty acids were reinforced with mineral microfillers, surface coated calcium carbonate (CaCO3) or high aspect ratio talc (HAR), to prepare different micro‐biocomposites systems. ...


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