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3.493 Aktuelle Fachpublikationen zum Thema temperature

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Poly(ether‐imide) and related sepiolite nanocomposites: investigation of physical, thermal, and mechanical properties

20.02.2015 | Zahra Tabatabaei‐Yazdi, Shahram Mehdipour‐Ataei, Polymers for Advanced Technologies, 2015

Novel poly(ether‐imide) and sepiolite nanocomposites were synthesized based on a unique diamine monomer with the aim of improving physical and mechanical properties of final polyimide films. The diamine was polycondensed with 4,4′‐(hexafluoroisopropylidene) diphthalic anhydride to produce ...


Viscosity and refractive index adjustment of poly(methyl methacrylate‐co‐ethyleneglycol dimethacrylate) for application in microoptics

20.02.2015 | Thomas Hanemann, Kirsten Honnef, Polymers for Advanced Technologies, 2015

Polymer optical components like waveguides or lenses are gaining more and importance as passive or active devices enabling the formation of a sensor and detector platform, e.g. for monitoring the health of large area functional surfaces, which are difficult to access like the wings of an ...


Quick quantification of proteins by MALDI

18.02.2015 | Sung Hee Ahn, Jeong Won Kang, Jeong Hee Moon, Kwang Pyo Kim, Seong Hoon Lee, Myung Soo Kim, Journal of Mass Spectrometry, 2015

Previously, we reported that the matrix‐assisted laser desorption ionization spectrum of a peptide became reproducible when an effective temperature was held constant. Using a calibration curve drawn by plotting the peptide‐to‐matrix ion abundance ratio versus the peptide concentration in a ...


Enhanced thermal stability of biomedical thermoplastic polyurethane with the addition of cellulose nanocrystals

18.02.2015 | Jen‐Chieh Liu, Darren J. Martin, Robert J. Moon, Jeffrey P. Youngblood, Journal of Applied Polymer Science, 2015

ABSTRACT Freeze‐dried cellulose nanocrystals (CNCs) were dispersed in the thermoplastic polyurethane [Pellethane 2363‐55D (P55D)] by a solvent casting method to fabricate CNC‐reinforced nanocomposites. This study demonstrated that the addition of small amounts (1–5 wt %) of CNCs to P55D ...


Preparation of Ag/Au bimetallic nanostructures and their application in surface‐enhanced fluorescence

18.02.2015 | Jun Dong, Yanyan Ye, Wenhui Zhang, Zebin Ren, Yiping Huo, Hairong Zheng, Luminescence, 2015

Abstract An effective substrate for surface‐enhanced fluorescence, which consists of cluster Ag/Au bimetallic nanostructures on a copper surface, was synthesized via a multi‐stage galvanic replacement reaction of a Ag cluster in a chlorauric acid (HAuCl4) solution at room temperature. The ...


Xanthan gum: A versatile biopolymer for biomedical and technological applications

16.02.2015 | Denise F. S. Petri, Journal of Applied Polymer Science, 2015

ABSTRACT Xanthan gum is an extracellular polymer produced mainly by the bacterium Xanthomonas campestris. Traditionally it plays an important role in industrial applications as thickener, emulsion stabilizer and it has been added to water‐based drilling fluids due to its pseudoplastic behavior ...


Hyperelasticity, dynamic mechanical property, and rheology of addition‐type silicone rubber (VPDMS cured by PMHS)

16.02.2015 | Dong Hao, Dongxu Li, Yihuan Liao, Journal of Applied Polymer Science, 2015

ABSTRACT The aerospace‐level addition‐type silicone rubber (ASR) was prepared by vinyl‐terminated polydimethylsiloxane (VPDMS) and aerospace‐level polymethylhydrosiloxane (PMHS) and its mechanical properties were investigated through the hyperelastic measurements, the dynamic mechanical tests ...


Purification, immobilization, and characterization of protease from local Bacillus subtilis M‐11

09.02.2015 | Selmihan Sahin, Ismail Ozmen, Esengul Kir, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract Protease from Bacillus subtilis M‐11 was produced and purified using ammonium sulfate precipitation, gel filtration chromatography with 15.8‐fold. The purified enzyme showed a single band on sodium dodecyl sulfate‐polyacrylamide gel electrophoresis, and it was determined that its ...


Large‐scale plant growth chamber design for elevated pCO2 and δ13C studies

28.01.2015 | William M. Hagopian, Brian A. Schubert, A. Hope Jahren, Rapid Communications in Mass Spectrometry, 2015

Rationale Throughout at least the next century, CO2 fertilization and environmental stresses (e.g. nutrient, moisture, insect herbivory) are predicted to affect yields of economically important crop species. Stable isotopes of carbon are used to study plant stresses, which affect yields, but a ...


Imaging and identification of endogenous peptides from rat pituitary embedded in egg yolk

15.01.2015 | Piotr Sosnowski, Tymoteusz Zera, Beata Wilenska, Ewa Szczepanska‐Sadowska, Aleksandra Misicka, Rapid Communications in Mass Spectrometry, 2015

Rationale Mass spectrometry imaging (MSI) can provide accurate data containing the spatial distribution of endogenous peptides in tissue sections without previous treatment. One of the key issues in analyzing small samples is establishing a proper technique for mounting and manipulating ...


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