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2.106 Aktuelle Fachpublikationen zum Thema temperature

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Preparation and Characterization of Chitosan Nanoparticles‐Loaded Fish Gelatin‐Based Edible Films

25.06.2015 | Seyed Fakhreddin Hosseini, Masoud Rezaei, Mojgan Zandi, Farhid Farahmandghavi, Journal of Food Process Engineering, 2015

Abstract Bio‐based nanocomposite films were obtained from fish gelatin (FG) and different amounts of chitosan nanoparticles (CSNPs) (0, 2, 6 and 8% w/w) with diameters ranging from 40 to 80 nm. The influence of nanoparticles on the surface morphology, physicochemical properties, crystalline ...


Temperature Distribution within a Cold Cap during Nuclear Waste Vitrification

25.06.2015 | Derek R. Dixon; Michael J. Schweiger; Brian J. Riley; Richard Pokorny; Pavel Hrma, Environmental Science & Technology, 2015

The kinetics of the feed-to-glass conversion affects the waste vitrification rate in an electric glass melter. The primary area of interest in this conversion process is the cold cap, a layer of reacting feed on top of the molten glass. The work presented here provides an experimental ...


Experimental investigation of moisture diffusion in short‐glass‐fiber‐reinforced polyamide 6,6

20.06.2015 | Shi Zhang, Zhigao Huang, Yun Zhang, Huamin Zhou, Journal of Applied Polymer Science, 2015

ABSTRACT Moisture diffusion in polyamide 6,6 (PA66) and its short glass fiber‐reinforced composites has a great influence on their mechanical properties and service lives under hydrothermal environments. Hence, the moisture diffusion in neat PA66 and its composites was studied comprehensively ...


Bi‐Functional Mechanism in Degradation of Toxic Water Pollutants by Catalytic Amorphous Metals

19.06.2015 | Santanu Das, Seth Garrison, Sundeep Mukherjee, Advanced Engineering Materials, 2015

The authors report on the high catalytic activity and bi‐functional catalysis mechanism of amorphous metals in degrading AZO Dye, a toxic water pollutant and carcinogen. Aluminum‐based metallic glass was found to completely degrade AZO dye at room temperature without any toxic by‐products. The ...


Shape Persistence of Polyproline II Helical Oligoprolines

18.06.2015 | Luca Garbuio, Bartosz Lewandowski, Patrick Wilhelm, Ludmila Ziegler, Maxim Yulikov, Helma Wennemers, Gunnar Jeschke, Chemistry - A European Journal, 2015

Abstract Oligoprolines are commonly used as molecular scaffolds. Past studies on the persistence length of their secondary structure, the polyproline II (PPII) helix, and on the fraction of backbone cis amide bonds have provided conflicting results. We resolved this debate by studying a series ...


Exploring the glass transition region: crowding effect, nonergodicity and thermorheological complexity

18.06.2015 | Ashok K. Das, Physical Chemistry Chemical Physics, 2015

Monte Carlo simulations performed on multiple polymer chains have produced accurate relaxation modulus Gs(t) curves which match the experimental G(t) curves of polystyrene reasonably well, over a wide temperature range around the glass transition region. The inter-segmental interactions, defined ...


Extremely fragile glass‐formers? Calorimetric and rheological determinations

16.06.2015 | Astrid K. Torres Arellano, Gregory B. McKenna, Journal of Polymer Science Part B: Polymer Physics, 2015

ABSTRACT We use calorimetry and rheology to investigate reports of extremely fragile polymers and the speculation that d,l‐lactic acid should be extremely fragile. The dynamic fragilities of lactic acid, polysulfone, bisphenol‐A polycarbonate, and poly(vinyl chloride) were studied. The ...


Macromol. Chem. Phys. 12/2015

16.06.2015 | Minh‐Phuong Tran, Jean‐Michel Thomassin, Michaël Alexandre, Christine Jerome, Isabelle Huynen, Christophe Detrembleur, Macromolecular Chemistry and Physics, 2015

Back Cover: Electrically conductive polymeric foams of polypropylene and carbon nanotubes are prepared using supercritical carbon dioxide technology. Cell nucleation occurs when the high saturation pressure is rapidly released at a temperature higher than the glass transition temperature. Green ...


Relaxation suppression in a stretched copolymer matrix above Tg

12.06.2015 | Dmitriy Alhazov, Michael Burman, Arkadii Arinstein, Eyal Zussman, Journal of Polymer Science Part B: Polymer Physics, 2015

ABSTRACT Electrospun thermoplastic polyurethane (TPU) copolymer nanofiber mats are known to contract considerably upon heating up to ∼90 °C, whereas cast TPU films expand as expected. This work examined contraction in single electrospun nanofibers. In contrast to nanofiber mats, where mat ...


Effect of Self-Association on the Phase Stability of Triphenylamine Derivatives

12.06.2015 | Carlos F. R. A. C. Lima; José C. S. Costa; André Melo; Hilário R. Tavares; Artur M. S. Silva; Luı́s M. N. B. F. Santos, Journal of Physical Chemistry A, 2015

The self-association equilibrium, i.e. formation of noncovalent dimers, in two triphenylamine derivatives, TPD (N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine) and mMTDAB (1,3,5-tris[(3-methylphenyl)phenylamino]benzene), in solution was evaluated by 1H NMR spectroscopy. The gas-phase energetics ...


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