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Influence of non-covalent modification of multiwalled carbon nanotubes on the crystallization behaviour of binary blends of polypropylene and polyamide 6

01-Mar-2015 | Nabaneeta Mukhopadhyay; Ajay S. Panwar; Gulshan Kumar; I. Samajdar; Arup R. Bhattacharyya, Physical Chemistry Chemical Physics, 2015

Blends of polypropylene (PP) and polyamide 6 (PA6) with multiwalled carbon nanotubes (MWNTs) were prepared using different processing strategies in a twin-screw micro-compounder. The effect of MWNTs on the crystallization behaviour of the PP phase and the PA6 phase of the blend has been ...

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Validation of methods for H, C, N and S stable isotopes and elemental analysis of cheese: results of an international collaborative study

28-Jan-2015 | Federica Camin, Daniela Bertoldi, Alessandro Santato, Luana Bontempo, Matteo Perini, Luca Ziller, Angelo Stroppa, Ro ..., Rapid Communications in Mass Spectrometry, 2015

Rationale PDO cheeses, such as Parmigiano Reggiano and Grana Padano, which cost more than double generic similar cheeses, must be protected against mislabelling. The aim of this study was to validate the methods for the isotopic and elemental analysis of cheese, in order to support official ...

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ChemInform Abstract: Design, Development, Mechanistic Elucidation, and Rational Optimization of a Tandem Ireland Claisen/Cope Rearrangement Reaction for Rapid Access to the (Iso)Cyclocitrinol Core.

23-Jan-2015 | Christopher W. Plummer, Carolyn S. Wei, Carrie E. Yozwiak, Arash Soheili, Sara O. Smithback, James L. Leighton, ChemInform, 2015

Abstract The core structures (I) of cyclocitrinol (IIa) and isocyclocitrinol (IIb) are discussed.

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Determination of methylmercury in marine biota samples with advanced mercury analyzer: Method validation

04-Jan-2015 | Author(s): Sabine Azemard , Emilia Vassileva, Food Chemistry, 2015

Publication date: 1 June 2015 Source:Food Chemistry, Volume 176 Author(s): Sabine Azemard , Emilia Vassileva In this paper, we present a simple, fast and cost-effective method for determination of methyl mercury (MeHg) in marine samples. All important parameters influencing the sample ...

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Enzyme-assisted process for DAG synthesis in edible oils

04-Jan-2015 | Author(s): Daniela von der Haar , Andreas Stäbler , Rolf Wichmann , Ute Schweiggert-Weisz, Food Chemistry, 2015

Publication date: 1 June 2015 Source:Food Chemistry, Volume 176 Author(s): Daniela von der Haar , Andreas Stäbler , Rolf Wichmann , Ute Schweiggert-Weisz This study deals with the enzymatic synthesis of diacylglycerols in rapeseed oil by the esterification of free fatty acids and ...

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Gas chromatography of safranal as preferable method for the commercial grading of saffron (Crocus sativus L.)

04-Jan-2015 | Author(s): Monica Bononi , Paola Milella , Fernando Tateo, Food Chemistry, 2015

Publication date: 1 June 2015 Source:Food Chemistry, Volume 176 Author(s): Monica Bononi , Paola Milella , Fernando Tateo We present a new extraction protocol, using ethyl alcohol as a solvent, to evaluate safranal by gas chromatography (GC). A linear response was obtained with R 2 ...

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Novel nonammonia preservative for concentrated natural rubber latex

30-Dec-2014 | Ting Wang, Hong‐Xing Gui, Wen‐Fei Zhang, Ke‐Xi Zhang, Wei‐Qiang Yu, Yi‐Min Li, Ri‐Zhong Zeng, Mao‐Fang Huang, Journal of Applied Polymer Science, 2014

ABSTRACT A derivative of sym‐triazine (HTT) was chosen as a new nonammonia preservative for concentrated natural rubber latex (CNRL) in place of NH3–TT/zinc oxide (ZnO). The preservation effects of the HTT for CNRL, drying characteristics, mechanical properties, and cytotoxicity of the ...

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Methane calibration burner and C‐factor determination with cone calorimeter – validation of the standardized calibration protocol

29-Dec-2014 | Eric Guillaume, Laurent Saragoza, Fire and Materials, 2014

SUMMARY The cone calorimeter is one of the major fire tests. In its reference standard ISO 5660‐1, the apparatus (and especially a characteristic of its orifice plate mass flow meter, called C‐Factor) is calibrated using a methane burner set at 5 kW. However, measurements performed in end‐use ...

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Enzymatic treatment applied as a final stage in E. globulus kraft pulp bleaching

26-Dec-2014 | Joana I. T. Sousa, Ana I. G. Moura, Dmitry V. Evtuguin, M. Graça V. S. Carvalho, Journal of Chemical Technology & Biotechnology, 2014

Abstract Background Brightness stability of bleached chemical pulps is often associated with the final bleaching stages that should provide the removal of chromogenic species responsible for brightness reversion without compromising the papermaking potential. Aiming at promoting higher ...

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UV Absorption Spectrum and Photodissociation Channels of the Simplest Criegee Intermediate (CH2OO)

24-Dec-2014 | Richard Dawes; Bin Jiang; Hua Guo, Journal of the American Chemical Society, 2014

The lowest-lying singlet states of the simplest Criegee intermediate (CH2OO) have been characterized along the O–O dissociation coordinate using explicitly correlated MRCI-F12 electronic structure theory and large active spaces. It is found that a high-level treatment of dynamic ...

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