Dissection of a bicapped octahedral copper hydride cluster by halides or pseudohalides to form two different classes of racemic tetrahedral copper hydride clusters and the discovery of an unusual auto deracemization in the crystallization process

The analysis of the effect of the cooling rate on the main parameters of the crystallization process from the melt of composites obtained based on various matrices - polyethylene, polypropylene and polycarbonate, using copper microparticles as a filler is carried out.

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Innovative energy and mass balance of a continuous evaporating crystallizer

Sugar Industry ◽

10.36961/si23794 ◽

2019 ◽

pp. 646-654

Author(s):

Jan Iciek ◽

Kornel Hulak ◽

Radosław Gruska

Keyword(s):

Energy Balance ◽

Mass Balance ◽

Working Conditions ◽

Crystallization Process ◽

Heat Losses ◽

Inert Gas ◽

Gas Removal ◽

Energy Balances ◽

Heat Released ◽

Mass And Energy Balances

The article presents the mass and energy balances of the sucrose crystallization process in a continuous evaporating crystallizer. The developed algorithm allows to assess the working conditions of the continuous evaporating crystallizers and the technological and energy parameters. The energy balance algorithm takes into account the heat released during the crystallization of sucrose, which was analyzed in this study, heat losses to the environment and heat losses due the vapor used for inert gas removal.

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Initiation of the Explosive Crystallization Process in Amorphous Alloys of the Fe-Zr System by Pulse Laser Treatment

Journal of Nano- and Electronic Physics ◽

10.21272/jnep.11(2).02005 ◽

2019 ◽

Vol 11 (2) ◽

pp. 02004-1-02004-5

Author(s):

T. L. Tsaregradskaya ◽

◽

Yu. A. Kunitskyi ◽

О. О. Kаlenyk ◽

I. V. Plyushchay ◽

...

Keyword(s):

Laser Treatment ◽

Pulse Laser ◽

Amorphous Alloys ◽

Crystallization Process ◽

Explosive Crystallization

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The effect of kinetic parameters on discontinuous crystallization process

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19752592 ◽

1975 ◽

Vol 40 (9) ◽

pp. 2592-2604 ◽

Cited By ~ 3

Author(s):

J. Nývlt

Keyword(s):

Kinetic Parameters ◽

Crystallization Process

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Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

Materials ◽

10.3390/ma14040753 ◽

2021 ◽

Vol 14 (4) ◽

pp. 753

Author(s):

M. Baibarac ◽

A. Nila ◽

I. Smaranda ◽

M. Stroe ◽

L. Stingescu ◽

...

Keyword(s):

Crystallization Process ◽

Weight Ratio ◽

Thermoplastic Elastomers ◽

Visible Spectral Range ◽

X Ray Diffraction ◽

Thermoplastic Polymers ◽

The Matrix ◽

Free Films ◽

Batio3 Nanoparticles ◽

Properties Of Composites

In this work, new films containing composite materials based on blends of thermoplastic polymers of the polyurethane (TPU) and polyolefin (TPO) type, in the absence and presence of BaTiO3 nanoparticles (NPs) with the size smaller 100 nm, were prepared. The vibrational properties of the free films depending on the weight ratio of the two thermoplastic polymers were studied. Our results demonstrate that these films are optically active, with strong, broad, and adjustable photoluminescence by varying the amount of TPU. The crystalline structure of BaTiO3 and the influence of thermoplastic polymers on the crystallization process of these inorganic NPs were determined by X-ray diffraction (XRD) studies. The vibrational changes induced in the thermoplastic polymer’s matrix of the BaTiO3 NPs were showcased by Raman scattering and FTIR spectroscopy. The incorporation of BaTiO3 NPs in the matrix of thermoplastic elastomers revealed the shift dependence of the photoluminescence (PL) band depending on the BaTiO3 NP concentration, which was capable of covering a wide visible spectral range. The dependencies of the dielectric relaxation phenomena with the weight of BaTiO3 NPs in thermoplastic polymers blends were also demonstrated.

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Antimicrobial Property of Polypropylene Composites and Functionalized Copper Nanoparticles

Polymers ◽

10.3390/polym13111694 ◽

2021 ◽

Vol 13 (11) ◽

pp. 1694

Author(s):

Noemi Jardón-Maximino ◽

Gregorio Cadenas-Pliego ◽

Carlos A. Ávila-Orta ◽

Víctor Eduardo Comparán-Padilla ◽

Luis E. Lugo-Uribe ◽

...

Keyword(s):

Copper Nanoparticles ◽

Crystallization Process ◽

Copper Ions ◽

Antimicrobial Property ◽

Aminobutyric Acid ◽

New Materials ◽

Melt Mixing ◽

Polypropylene Composites ◽

And Staphylococcus Aureus ◽

Thermal Stability Of

Copper nanoparticles (CuNPs) functionalized with polyethyleneimine (PEI) and 4-aminobutyric acid (GABA) were used to obtain composites with isotactic polypropylene (iPP). The iPP/CuNPs composites were prepared at copper concentrations of 0.25–5.0 wt % by melt mixing, no evidence of oxidation of the CuNP was observed. Furthermore, the release of copper ions from iPP/CuNPs composites in an aqueous medium was studied. The release of cupric ions was higher in the composites with 2.5 and 5.0 wt %. These composites showed excellent antibacterial activity (AA) toward Pseudomona aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus). The incorporation of CuNP into the iPP polymeric matrix slightly decreased the thermal stability of the composite material but improved the crystallinity and the storage modulus. This evidence suggests that CuNPs could work as nucleating agents in the iPP crystallization process. The iPP/CuNPs composites presented better AA properties compared to similar composites reported previously. This behavior indicates that the new materials have great potential to be used in various applications that can be explored in the future.

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