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5.113 Aktuelle Fachpublikationen zum Thema temperature

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Tunable Encapsulation Structure of Block Copolymer Coated Single-Walled Carbon Nanotubes in Aqueous Solution

15.05.2015 | Youngkyu Han; Suk-kyun Ahn; Zhe Zhang; Gregory S. Smith; Changwoo Do, Macromolecules, 2015

Nanosized and shape-tunable molecular building blocks can provide great opportunities for the fabrication of precisely controlled nanostructures. In this work, we have fabricated a molecular building block of single-walled carbon nanotubes (SWNTs) coated by PPO–PEO–PPO block copolymers whose ...

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Crystallization behavior and mechanical properties of an electrospun ethanol‐mediated poly(ethylene terephthalate) fibrous membrane

14.05.2015 | Li‐Na Wang, Yan‐Wei Wang, Wen‐Tao Liu, Xue‐Lian Xia, Su‐Qin He, Hao Liu, Cheng‐Shen Zhu, Journal of Applied Polymer Science, 2015

ABSTRACT A simple approach for preparing electrospun poly(ethylene terephthalate) (PET) fibrous membranes with excellent spinnability and mechanical properties is introduced in this article. To enhance the electrospinnability of PET, a small content of ethanol was incorporated into a 16 wt % ...

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Salting‐Out of Acetone, 1‐Butanol, and Ethanol from Dilute Aqueous Solutions

14.05.2015 | Shaoqu Xie, Conghua Yi, Xueqing Qiu, AIChE Journal, 2015

ABSTRACT The salting‐out phase equilibria for acetone, 1‐butanol, and ethanol (ABE) from dilute aqueous solutions by using potassium carbonate (K2CO3) and dipotassium hydrogen phosphate trihydrate (K2HPO4·3H2O) as outstanding salting‐out agents were investigated. Increasing the salt ...

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Theoretical Study of Decomposition of Methanediol in Aqueous Solution

14.05.2015 | Satoshi Inaba, Journal of Physical Chemistry A, 2015

Methanediol is a product of the hydration of formaldehyde and is more abundant than formaldehyde in aqueous solution. We carried out a number of quantum chemical simulations to study the decomposition of methanediol in aqueous solution. The decomposition of a methanediol proceeds by transferring ...

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Solubility of 3,7-Dinitro-1,3,5,7-tetraazabicyclo [3.3.1] Nonane in Ethanenitrile, Methanol, 1,1-Dichloroethane, Dimethyl Sulfoxide, Acetone, and Mixed Solvents

13.05.2015 | Min Xue; Siyu Wu; Wenjin Liu; Qiao Zhu; Zihui Meng; Zhihui Lin, Journal of Chemical & Engineering Data, 2015

The solubility of 3,7-dinitro-1,3,5,7-tetraazabicyclo [3.3.1] nonane (DPT) was measured in ethanenitrile, methanol, 1,1-dichloroethane, dimethyl sulfoxide (DMSO), acetone, ethyl acetate, ethyl acetate and methanol mixture, and acetonitrile and water mixture from 288.15 K to 308.15 K. In this ...

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Understanding the Role of Temperature Change and the Presence of NaCl Salts on Caffeine Aggregation in Aqueous Solution: From Structural and Thermodynamics Point of View

13.05.2015 | Bhanita Sharma; Sandip Paul, Journal of Physical Chemistry B, 2015

To examine the molecular level understanding of temperature induced self-association of caffeine molecules in aqueous solution both in the presence and absence of salt NaCl, we have performed long MD simulations at a regime of temperatures ranging from 275 to 350 K with a temperature difference ...

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Solubility and Solution Thermodynamics of Diphenoxylate in Different Pure Solvents

13.05.2015 | Xue-Yan Qing; Hua-Lin Fu; Gang Shu; Meng-Jiao Liu; Jian-Yu Zhou; Wen-Bin Wu; Yan-Li Zhang; Jun-Jie Zhou, Journal of Chemical & Engineering Data, 2015

The solubility data of diphenoxylate in pure solvents of water, methanol, ethanol, acetone, acetonitrile, 2-propanol were measured within the temperature range of 293.15–318.15 K by a static analytical method under atmospheric pressure. Several commonly used thermodynamic models, including the ...

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Carbene Supported Dimer of Heavier Ketenimine Analogue with P and Si Atoms

12.05.2015 | Sudipta Roy; Birger Dittrich; Totan Mondal; Debasis Koley; A. Claudia Stückl; Brigitte Schwederski; Wolfgang Kaim; M ..., Journal of the American Chemical Society, 2015

A cyclic alkyl(amino) carbene (cAAC) stabilized dimer [(cAAC)Si(P-Tip)]2 (2) (Tip = 2,4,6-triisopropylphenyl) is reported. 2 can be considered as a dimer of the heavier ketenimine (R2C═C═N–R) analogue. The dark-red rod-shaped crystals of 2 were synthesized by reduction of the precursor, ...

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Highly Fluorescent Flavins: Rational Molecular Design for Quenching Protection Based on Repulsive and Attractive Control of Molecular Alignment

11.05.2015 | Haruka Suzuki, Ryo Inoue, Soichiro Kawamorita, Naruyoshi Komiya, Yasushi Imada, Takeshi Naota, Chemistry - A European Journal, 2015

Abstract Unprecedented intense fluorescent emission was observed for a variety of flavin compounds bearing a perpendicular cyclic imide moiety at the C7 position of an isoalloxazine platform. A series of alloxan‐substituted flavins was prepared selectively by reduction of the corresponding ...

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Materials, Vol. 8, Pages 2514-2522: Synthesis and Thermoelectric Properties in the 2D Ti1 – xNbxS3 Trichalcogenides

11.05.2015 | Misse, Patrick R. N.; Berthebaud, David ; Lebedev, Oleg I.; Maignan, Antoine ; Guilmeau, Emmanuel, Materials, 2015

A solid solution of Ti1 − xNbxS3 composition (x = 0, 0.05, 0.07, 0.10) was synthesized by solid-liquid-vapor reaction followed by spark plasma sintering. The obtained compounds crystallize in the monoclinic ZrSe3 structure type. For the x = 0.07 sample, a mixture of both A and B variants of the ...

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