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2.368 Aktuelle Fachpublikationen zum Thema temperature

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Thermal Stability of Sulfonated Poly(Ether Ether Ketone) Films: on the Role of Protodesulfonation

27.08.2015 | Beata T. Koziara, Emiel J. Kappert, Wojciech Ogieglo, Kitty Nijmeijer, Mark A. Hempenius, Nieck E. Benes, Macromolecular Materials and Engineering, 2015

Thin film and bulk, sulfonated poly(ether ether ketone) (SPEEK) have been subjected to a thermal treatment at 160–250 °C for up to 15 h. Exposing the films to 160 °C already causes partial desulfonation, and heating to temperatures exceeding 200 °C results in increased conjugation in the ...

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Hydrothermal Degradation Behavior of Y‐TZP Ceramics Sintered by Nonconventional Microwave Technology

21.08.2015 | Álvaro Presenda, Maria Dolores Salvador, Rodrigo Moreno, Amparo Borrell, Journal of the American Ceramic Society, 2015

Different factors such as the characteristics of starting powders, their processing, the sintering technique and the final sintering temperature were assessed with the goal to improve the low‐temperature degradation (LTD) resistance of 3Y‐TZP materials without compromising on the mechanical ...

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Extraction of Oligosaccharides from Passion Fruit Peel by Subcritical Water Treatment

20.08.2015 | Khwanjai Klinchongkon, Pramote Khuwijitjaru, Jintana Wiboonsirikul, Shuji Adachi, Journal of Food Process Engineering, 2015

Abstract Passion fruit peel, a major by‐product of the fruit processing, was treated in subcritical water under nonisothermal conditions in batch‐type reactor containing the dried peel and water in the ratio 1:16 (w/w), with maximum temperatures in the range of 100–245C. The effects of the ...

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Enhanced electrochemical performance of ZnO-MnO composite as an anode material for lithium ion batteries

20.08.2015 | Min Seob Song; Sahn Nahm; Won Il Cho; Chongmok Lee, Physical Chemistry Chemical Physics, 2015

A ZnO-MnO composite was synthesized using a simple solvothermal method combined with a high-temperature treatment. To observe the phase change during the heating process, in situ high-temperature XRD analysis was performed under vacuum conditions. The results indicated that ZnMn2O4 transformed to ...

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Electrospinning‐induced shape memory effect in thermoplastic polyurethane characterization and thermoviscoelastic modeling

17.08.2015 | Dimitry Alhazov, Charly Azra, Eyal Zussman, Journal of Polymer Science Part B: Polymer Physics, 2015

ABSTRACT Electrospun thermoplastic polyurethane (TPU) nanofibers are known to contract considerably (∼40%) on heating up to ∼90 °C. This study investigates this thermomechanical behavior and the TPU shape memory capabilities. The shape memory effect was first studied in TPU films as a model ...

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Thermochemical Characterization of Bio- and Petro-diesel Fuels Using a Novel Laser-Heating Technique

17.08.2015 | Cary Presser; Ashot Nazarian; Thomas J. Bruno; Jacolin A. Murray; John L. Molloy, Energy & Fuels, 2015

A state-of-the-art, rapid laser-heating technique, referred to as the laser-driven thermal reactor, was used to characterize National Institute of Standards and Technology Standard Reference Material (SRM) diesel and biodiesel fuels, as well as a prototype biodiesel fuel. Also described are the ...

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Raman Spectroscopic Observations of the Ion Association between Mg2+ and SO42– in MgSO4-Saturated Droplets at Temperatures of ≤380 °C

17.08.2015 | Ye Wan; Xiaolin Wang; Wenxuan Hu; I-Ming Chou, Journal of Physical Chemistry A, 2015

Liquid–liquid phase separation was observed in aqueous MgSO4 solutions with excess H2SO4 at elevated temperatures; the aqueous MgSO4/H2SO4 solutions separated into MgSO4-rich droplets (fluid F1) and a MgSO4-poor phase (fluid F2) during heating. The phase separation temperature increases with ...

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Synthesis of high-magnetization and monodisperse Fe3O4 nanoparticles via thermal decomposition

16.08.2015 | Author(s): Thi Kim Oanh Vuong, Dai Lam Tran, Trong Lu Le, Duy Viet Pham, Hong Nam Pham, Thi Hong Le Ngo, ..., Materials Chemistry and Physics, 2015

Publication date: Available online 14 August 2015 Source:Materials Chemistry and Physics Author(s): Thi Kim Oanh Vuong, Dai Lam Tran, Trong Lu Le, Duy Viet Pham, Hong Nam Pham, Thi Hong Le Ngo, Hung Manh Do, Xuan Phuc Nguyen Fe3O4 nanoparticles with high saturation ...

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Fabrication and characterization of silver/nickel sulphide solar absorber coatings on stainless steel by chemical bath deposition

16.08.2015 | Author(s): Alcina Johnson Sudagar, R. Subasri, Materials Chemistry and Physics, 2015

Publication date: Available online 15 August 2015 Source:Materials Chemistry and Physics Author(s): Alcina Johnson Sudagar, R. Subasri Metal chalcogenide (silver/nickel sulphide) thin film absorber coatings on AISI SS 321 substrates were deposited using a chemical bath deposition ...

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Effect of process parameters and talc ratio on hot plate welding of polypropylene

13.08.2015 | E. Taşkıran, S. Sayer, Ç. Özes, Ç. Yeni, A. Ülker, Materialwissenschaft und Werkstofftechnik, 2015

This study analyzes the influence of different talc ratios on weld strength of polypropylene joined with hot plate welding process. It further determines the optimum welding parameter settings to achieve the optimum weld strength and observes the effect of process parameters, namely plate ...

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