Relevant bibliographies by topics / Ammonium(benzyl trimethyl) bromure

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Ammonium(benzyl trimethyl) bromure'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Ammonium(benzyl trimethyl) bromure"

1

Komendová-Vlašánková, Renata, and Lumír Sommer. "Separation and Preconcentration of Platinum Group Metals and Gold on Modified Silica and XAD Sorbents in the Presence of Cationic Surfactants for Their Determination by ICP-AES." Collection of Czechoslovak Chemical Communications 67, no. 4 (2002): 454–70. http://dx.doi.org/10.1135/cccc20020454.

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Various modified silica sorbents and unmodified silica were tested for the separation and preconcentration of 10-200 ng cm-3 from 50-1 000 cm3 sample volume of platinum group metals (PGMs), Pt(IV, II), Pd(II), Ir(IV), Rh(III), Os(VI), Ru(IV) and Au(III) in the form of ion associates of their chloro and bromo complexes with cationic surfactants. [1-(Ethoxycarbonyl)pentadecyl]trimethylammonium bromide (Septonex®), benzyl(dodecyl)dimethylammonium bromide (Sterinol®), trimethyl(tetradecyl)ammonium bromide or hexadecyl(trimethyl)ammonium chloride and 0.1 M HCl or 0.1 M HBr are suitable for the purpose. 100% recovery for Pd(II), Pt(IV) and Au(III) was obtained with octadecyl silicas Separon™ SGX C18, Separon™ SGX RPS and Phenyl™ silica in the presence of 0.006 M Septonex® or 0.003 M Sterinol®. The retained PGMs and Au(III) were eluted with acetonitrile and determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) after evaporation of organic solvent in the presence of 0.1 M HCl. The enrichment factor on Separon™ SGX RPS reaches 100. A 1 000 : 1 excess of Cl-, NO3-, SO42-, Na+, K+, Ca2+, Mg2+, Fe3+ or Al3+ does not interfere with the preconcentration of PGMs and Au(III) on this sorbent. With the silica-based anion exchanger Separon™ SGX AX, the 100% recovery is observed for Ir(IV), Pd(II), Pt(IV) when the elution is performed with 5 M HCl or 5 M HNO3. Macroporous sorbents Amberlite™ XAD2 and Amberlite™ XAD4 are suitable for the retention of Au(III), Pd(II) and Pt(IV) from 0.1 M HCl and 0.006 M Septonex®. 100% recovery is achieved using acetonitrile as eluent but there is no preference of these sorbents to modified silica. In this way, the recovery of 0.1-0.2 μg cm-3 Au(III), Pd(II), Pt(IV) was also successfully tested with spiked matrices of soil extracts, power station dust samples and natural waters.
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Reddy, K. Rajendar, K. C. Rajanna, K. Uppalaiah, and S. Ramgopal. "Cetyltrimethylammonium Bromide as an Efficient Catalyst for Regioselective Bromination of Alkoxy Naphthalenes with Trimethyl Benzyl Ammonium Tribromide: Synthetic and Kinetic Approach." International Journal of Chemical Kinetics 46, no. 1 (October 5, 2013): 10–23. http://dx.doi.org/10.1002/kin.20821.

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Kuczera, Janina, Teresa E. Krai, Marian Podolak, and Stanisław Przestalski. "A Joint Effect of Cationic and Anionic Amphiphilic Compounds on the Desorption of Calcium Ions from Lecithin Liposome Membranes." Zeitschrift für Naturforschung C 54, no. 5-6 (June 1, 1999): 429–37. http://dx.doi.org/10.1515/znc-1999-5-620.

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Abstract The aim of the work was to determine the synergism and antagonism of mixtures of the cationic amphiphilic compounds: N-benzyl-N,N-dimethyl-N-tetradecylammonium chloride (BD TA), N-benzyl-N,N-dimethyl-N-dodecylammonium chloride (BDDA), N-methyl-N-te-tradecyl-morpholinium bromide (MTM), N,N,N-trimethyl-N-tetradecylammonium bromide (TMTA) and those of tripropyltin chloride in a mixture with amphiphilic anionic compounds (a homologous series of sodium alkylsulfonates with n = 2, 4, 6, 8, 10, 12 and 14 alkyl carbon atoms) in the process of calcium ion desorption from liposome lecithin membranes. Radioactive labels and spin labels were used in the investigations. All compounds studied caused an increase in the kinetic rate constant of calcium ion desorption from liposome membranes with increasing concentration. In case of mixtures containing cationic and anionic compounds both synergism and antagonism were observed. It was shown that the regulatory effect depended on the properties of both cationic and anionic compounds. A mixture of the most effective cationic compound (BDTA) with each of the anionic compounds decreased the effect. Mixtures of the remaining ammonium com­ pounds with sodium alkylsulfonates produced both synergism and antagonism. Anionic com­ pounds with short chains increased, and with longer chains decreased efficiency, while com­ pounds with comparable chains caused totally blocked desorption. A mixture of an organometallic compound having three short chains with anionic compounds gave a reversed effect: short-chain compounds caused a decreased and those with long-chains -increased efficiency of tripropyltin chloride. Studies with spin labels supported the conclusion that the most important factor responsi­ ble for the regulatory effect is the molecular shape of the complexes formed in a mixture of both groups of compounds -a factor that determines membrane packing density
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Penfold, J., E. Staples, I. Tucker, L. Soubiran, and R. K. Thomas. "Comparison of the Coadsorption of Benzyl Alcohol and Phenyl Ethanol with the Cationic Surfactant, Hexadecyl Trimethyl Ammonium Bromide, at the Air–Water Interface." Journal of Colloid and Interface Science 247, no. 2 (March 2002): 397–403. http://dx.doi.org/10.1006/jcis.2001.8041.

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WATANABE, M., K. LEE, K. GOTO, S. KUMAGAI, Y. SUGITA-KONISHI, and Y. HARA-KUDO. "Rapid and Effective DNA Extraction Method with Bead Grinding for a Large Amount of Fungal DNA." Journal of Food Protection 73, no. 6 (June 1, 2010): 1077–84. http://dx.doi.org/10.4315/0362-028x-73.6.1077.

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To identify a rapid method for extracting a large amount of DNA from fungi associated with food hygiene, extraction methods were compared using fungal pellets formed rapidly in liquid media. Combinations of physical and chemical methods or commercial kits were evaluated with 3 species of yeast, 10 species of ascomycetous molds, and 4 species of zygomycetous molds. Bead grinding was the physical method, followed by chemical methods involving sodium dodecyl sulfate (SDS), cetyl trimethyl ammonium bromide (CTAB), and benzyl chloride and two commercial kits. Quantity was calculated by UV absorbance at 260 nm, quality was determined by the ratio of UV absorbance at 260 and 280 nm, and gene amplifications and electrophoresis profiles of whole genomes were analyzed. Bead grinding with the SDS method was the most effective for DNA extraction for yeasts and ascomycetous molds, and bead grinding with the CTAB method was most effective with zygomycetous molds. For both groups of molds, bead grinding with the CTAB method was the best approach for DNA extraction. Because this combination also is relatively effective for yeasts, it can be used to extract a large amount of DNA from a wide range of fungi. The DNA extraction methods are useful for developing gene indexes to identify fungi with molecular techniques, such as DNA fingerprinting.
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Choe, Yoong-Kee, Cy Fujimoto, Kwan-Soo Lee, Luke T. Dalton, Kathy Ayers, Neil J. Henson, and Yu Seung Kim. "Alkaline Stability of Benzyl Trimethyl Ammonium Functionalized Polyaromatics: A Computational and Experimental Study." Chemistry of Materials 26, no. 19 (October 2014): 5675–82. http://dx.doi.org/10.1021/cm502422h.

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Kolhe, Shailesh M., and Ashok Kumar. "Radiation-induced grafting of vinyl benzyl trimethyl ammonium chloride onto nylon-6 fabric." Radiation Physics and Chemistry 76, no. 5 (May 2007): 901–6. http://dx.doi.org/10.1016/j.radphyschem.2006.09.004.

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Ritonga, Ahmad Hafizullah, Barita Aritonang, and Liver Iman Putra Zai. "MODIFIKASI KOPOLIMER KARET ALAM SIKLIS GRAFTING ASAM OLEAT MENGGUNAKAN INISIATOR BENZOIL PEROKSIDA DAN BAHAN PENGISI BENTONIT-CETIL TRIMETIL AMONIUM BROMIDA." JURNAL KIMIA MULAWARMAN 16, no. 1 (November 29, 2018): 40. http://dx.doi.org/10.30872/jkm.v16i1.726.

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Research on the modification of Cyclic Natural Rubber (CNR) grafting Oleic Acid (OA) copolymer using initiator of Benzoyl Peroxide (BPO) and the filler of bentonite-Cetil Trimethyl Ammonium Bromide (CTAB) has been carried out, which aims to determine the method of modifying Cyclic Natural Rubber (CNR) and Oleic Acid (OA) so it can produce CNR-g-OA copolymer through grafting method with BPO initiator mixed together with bentonite-CTAB. This research was conducted in three stages. The first stage is the process of dissolving CNR using xylene. The second stage is the process of mixing CNR solution and OA with the composition (70:30) phr, followed by the addition of BPO initiator and bentonite-CTAB filler. The third stage is characterization using FTIR and Scanning Electron Microscopy (SEM). The results of the analysis using FT-IR showed an absorption at 1708,23 cm-1 which indicated the presence of C=O bonds from oleic acid which had been grafted on CNR, and increased intensity after addition of bentonite-CTAB at 1568,96 cm-1; 1446,13 cm-1; 1255,66 cm-1; and 866,94 cm-1. Characterization results using SEM showed that the mixing of Bentonite-CTAB in KAS-g-OA was evenly distributed and quite homogeneous.
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El-Dossoki, Farid I., Esam A. Gomaa, and Osama K. Hamza. "Solvation Thermodynamic Parameters for Alkyl Benzyl Dimethyl Ammonium Chloride and Cetyl Trimethyl Ammonium Chloride Surfactants in Water and Alcoholic-Water Solvents." Journal of Chemical & Engineering Data 64, no. 10 (September 11, 2019): 4482–92. http://dx.doi.org/10.1021/acs.jced.9b00527.

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Huang, Lijie, Xiaoxue Han, Haobin Chen, Shuxiang An, Hanyu Zhao, Hao Xu, Chongxing Huang, Shuangfei Wang, and Yang Liu. "Preparation and Barrier Performance of Layer-Modified Soil-Stripping/Cassava Starch Composite Films." Polymers 12, no. 7 (July 20, 2020): 1611. http://dx.doi.org/10.3390/polym12071611.

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In this study, we investigated the barrier properties of a montmorillonite-reinforced biomass material, starch. Organically modified montmorillonite materials were prepared from natural montmorillonite by reacting it with dodecyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride or octadecyl trimethyl ammonium chloride under ultrasonic conditions. The composite starch films incorporated with these organically modified montmorillonite samples were characterized by scanning electron microscopy, transmission electron microscopy, infrared spectroscopy and X-ray diffraction. The results showed that the introduction of montmorillonite decreases the transmittance of the composite film by 10% in the visible region and significantly inhibits UV-light transmittance. The decomposition temperature of the composite film ranges from 200 to 500 °C, with a weight loss rate of 80%. The distance between the montmorillonite layers increases from 0.14 nm in the non-magnetized state to 1.49 nm after magnetization. The oxygen permeability of the starch film modified by organic montmorillonite (0.067 cm3/m2·d) is lower than that of the montmorillonite starch film without magnetization (0.097cm3/m2·d). The oxygen barrier capacity is close to zero. Particularly in the ordered magnetic montmorillonite starch composite film, the oxygen barrier ability is the best. Therefore, modified montmorillonite could serve as an excellent reinforcing agent for cassava starch films and effectively improve the oxygen barrier performance of the films.
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Dissertations / Theses on the topic "Ammonium(benzyl trimethyl) bromure"

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Bennis, Khalil. "Etude de l'adsorption et de la reduction electrochimique sur electrode de mercure de quelques cetones en presence de tensio-actifs en milieu aqueux." Clermont-Ferrand 2, 1988. http://www.theses.fr/1988CLF2E406.

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Etude de la reduction electrochimique de l'acetophenone, l'oxyde de mesityle et l'ethylideneacetone en milieu aqueux en presence d'agents de surface anioniques (laurylsulfate de sodium), d'agents de surface cationiques (bromure de benzyltrimethylammonium et bromure de cetyltrimethylammonium) et d'agents de surface non ioniques (brij 35 et poly(oxyethylene))
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Belmajdoub, Abdelaly. "Étude comparative des systèmes micellaires bromure de cetyltrimethylammonium/eau lourde et bromure de cétyltriméthylammonium/fromamide par relaxation magnétique nucléaire multichamp/multifréquence des isotopes **(1)H, **(2)H, **(14)N, **(13)C, et **(17)O." Nancy 1, 1988. http://www.theses.fr/1988NAN10250.

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Études des propriétés du formamide en tant que substitut de l'eau dans les systèmes micellaires et les phases lyotropes et description quantitative de l'agrégation des tensioactifs en solution non aqueuse
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Bahri, Hamed. "Thermodynamique dans les milieux diphasés dispersés : cas des solutions micellaires et des microémulsions." Paris 6, 1986. http://www.theses.fr/1986PA066280.

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Déduction de relations théoriques générales liant dans les systèmes liquides diphasés, les grandeurs observables "globales" aux grandeurs "locales" dans les différentes phases. Exposé de définitions et de notions thermodynamiques. Etablissement de relations générales pour les grandeurs molaires partielles. Etudes du cas d'un système réel : bromures d'alkyltrimethylammonium en milieu eau-kcl, qui montre que les solutions micellaires en milieu salin concentré peuvent être considérées comme un système diphasé. Données sur le partage d'un soluté moléculaire aniline en milieu micellaire. Etudes des volumes molaires partiels des constituants d'une microémulsion, etc. . .
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Souabi, Salah. "Etude de l'adsorption de tensioactifs cationiques sur charbon actif influence de coadsorbats /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376186543.

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Riyahi, Benzakour Jamila. "Étude du mode d'action de quelques pesticides sur le métabolisme énergétique du soja (glycine Max L. )." Nancy 1, 1988. http://www.theses.fr/1988NAN10253.

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Les mitochondries prises comme révélateurs de l'activité de pesticides ont été extraites de trois types de tissus (cotyledons, feuilles et racines). Les trois types de pesticides utilisés (herbicides 2,4-D et pyrifenops, fongicides aacl ou sels d'alkylammonium) agissent comme découplants-inhibiteurs sur les mitochondries. Les composés du groupe AACL sont les plus puissants et les différences d'action entre mitochondries de tissus chlorophyllien et racinaire semblent provenir de la présence d'une voie de transport d'électrons résistante au cyanure dans les tissus photosynthétiques
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Book chapters on the topic "Ammonium(benzyl trimethyl) bromure"

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Itoh, T. "Of Trimethyl[4-(trimethylsilylmethyl)benzyl]ammonium Halides." In Monocyclic Arenes, Quasiarenes, and Annulenes, 1. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-045-00632.

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Conference papers on the topic "Ammonium(benzyl trimethyl) bromure"

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Mathew, Manjusha Elizabeth, Ishak Ahmad, Sabu Thomas, Rusli Daik, and Muhammad Kassim. "Synthesis and characterization of poly (benzyl trimethyl ammonium chloride) ionic polymer." In THE 2017 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Author(s), 2018. http://dx.doi.org/10.1063/1.5028023.

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