Synthesis, characterization and antimicrobial activities of water-soluble amphiphilic copolymers containing ciprofloxacin and quaternary ammonium salts

2015 ◽  
Vol 3 (18) ◽  
pp. 3704-3713 ◽  
Author(s):  
Man He ◽  
Huining Xiao ◽  
Yuming Zhou ◽  
Peng Lu
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Antimicrobial Activities ◽  
Quaternary Ammonium Salts ◽  
Water Soluble ◽  
Ammonium Salts ◽  
Amphiphilic Copolymers ◽  
Methacrylate Monomers

Novel water-soluble amphiphilic copolymers with ciprofloxacin are prepared by copolymerization of methacrylate monomers containing ciprofloxacin and quaternary ammonium salt monomers.

scholarly journals Design of chiral urea-quaternary ammonium salt hybrid catalysts for asymmetric reactions of glycine Schiff bases

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78941-78949 ◽  
Author(s):  
Maximilian Tiffner ◽  
Johanna Novacek ◽  
Alfonso Busillo ◽  
Katharina Gratzer ◽  
Antonio Massa ◽  
...  
Keyword(s):  
Schiff Bases ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Quaternary Ammonium Salts ◽  
Asymmetric Reactions ◽  
Ammonium Salts ◽  
Hybrid Catalysts

Bifunctional chiral urea-containing quaternary ammonium salts can be straightforwardly synthesised and systematically fine-tuned for asymmetric reactions of glycine Schiff bases.

Synthesis and Characterizaion of Adamantane-Containing Quaternary Ammonium Salts

2011 ◽  
Vol 233-235 ◽  
pp. 238-241 ◽  
Author(s):  
Jian Wei Guo ◽  
Nian Yun Guan ◽  
Sa Liu ◽  
Chu Fen Yang ◽  
Le Jie Zhu
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Alkylating Agents ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Adamantane Derivatives ◽  
H Nmr ◽  
Potential Use

To develop the potential use of adamantane derivatives in surfactant field, the adamantyl residue was introduced into the quaternary ammonium salt. The method involved synthesizing N-(1-adamantyl)-N, N-dimethylamine from 1-adamantine and quaternizing with different alkylating agents. Eight adamantane-containing quaternary ammonium salts were prepared and their structures were identified by1H NMR and IR.

Preparation of modified montmorillonite with different quaternary ammonium salts and application in Pickering emulsion

2019 ◽  
Vol 43 (29) ◽  
pp. 11543-11548 ◽  
Author(s):  
Zeyu Yang ◽  
Wanxu Wang ◽  
Xiumei Tai ◽  
Guoyong Wang
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Pickering Emulsion ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Modified Montmorillonite ◽  
Long Chain

The emulsion stabilized with long-chain quaternary ammonium salt-modified montmorillonite has better stability.

Preparation of quaternary ammonium salt of chitosan nanoparticles and their textile properties on Antheraea pernyi silk modification

2014 ◽  
Vol 84 (19) ◽  
pp. 2115-2124 ◽  
Author(s):  
Yanhua Lu ◽  
Dehong Cheng ◽  
Sheng Lu ◽  
Fengyuan Huang ◽  
Gang Li
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Chitosan Nanoparticles ◽  
Antimicrobial Activities ◽  
Water Soluble ◽  
Sodium Hypophosphite ◽  
Silk Fabric ◽  
Antheraea Pernyi ◽  
Initial Modulus

A novel eco-friendly finishing agent of quaternary chitosan nanoparticles was prepared in two steps from a chitosan with low molecular weight. The water-soluble quaternary ammonium salt of chitosan, N-[(2-hydroxy-3-trimethylammonium)propyl] chitosan chloride (HTCC), was first synthesized in heterogeneous system by quaternization, and then HTCC was further prepared to nanoparticles via ionotropic gelation reaction in the presence of 1, 2, 3, 4-butane tetracarboxylic acid and sodium hypophosphite. The size distribution and morphology of the HTCC particles were characterized using a laser particle size analyzer and transmission electron microscope (TEM). When Antheraea pernyi ( A. pernyi) silk fabric was treated with HTCC nanoparticles by using a conventional dip-pad-dry-cure process, the modified A. pernyi silk fabric demonstrated durable wrinkle-resistant property, shrinkage-resistant property and antimicrobial activities against Staphylococcus aureus and Escherichia coli, even after being exposed to 50 consecutive home-laundering conditions. However, the modification of A. pernyi silk fabric caused breaking strength loss, breaking elongation reduction and initial modulus rise to some extent.

XRD Study of Hydrophlogopite Intercalated with Alkyl Quaternary Ammonium Salt

2010 ◽  
Vol 178 ◽  
pp. 330-335
Author(s):  
Hong Juan Sun ◽  
Tong Jiang Peng ◽  
Hai Feng Liu ◽  
Jin Mei Sun
Keyword(s):  
Chain Length ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Interlayer Spacing ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Ammonium Bromide ◽  
X Ray Diffraction ◽  
Xrd Study

Hydrophlogopite was modified with sodium and then organically intercalated with a series of alkyl quaternary ammonium salts. The organically intercalated samples were characterized by X-ray diffraction analysis (XRD) and the effect of alkyl quaternary ammonium salt on the interlayer spacing of hydrophlogopite was discussed. The results showed that if the same alkyl quaternary ammonium salt was used to intercalate hydrophlogopite, the interlayer spacing of hydrophlogopite increased gradually with the rise of the added amount of quaternary ammonium salt, and that if different quaternary ammonium salts with the same amount were used, the interlayer spacing increased gradually with the rise of the chain length of the alkyl quaternary ammonium salts. For the alkyl quaternary ammonium salts with large chain length (n>10), the inflection point for the increasing interlayer spacing of the intercalated hydrophlogopite is at about 0.5 times of CEC. When octadecyl trimethyl ammonium bromide is used as intercalation agent and the added amount is 5 times of CEC, the interlayer spacing of hydrophlogopite is relatively maximal.

Preparation and Characterization of Two New Kinds of Soluble Quaternary Ammonium Salts of Chitosan

2011 ◽  
Vol 239-242 ◽  
pp. 496-500
Author(s):  
Li Ju Tan ◽  
He Dong Wang ◽  
Jiang Tao Wang
Keyword(s):  
Schiff Base ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Resonance Spectroscopy ◽  
Spectra Analysis ◽  
Chitosan Derivatives ◽  
H Nmr

Schiff base of chitosan was obtained by the reaction of chitosan and aromatic aldehyde, and then Schiff base of chitosan reacted with methyl iodide to get soluble quaternary ammonium salts of chitosan which were N-metoxybenzenemethyl quaternary ammonium salt of chitosan (NM- Chitosan) and N-hydroxybenzenemethyl quaternary ammonium salt of chitosan(NH-Chitosan). The obtained chitosan derivatives were characterized by Infrared Spectra Analysis(FT-IR), Nuclear Magnetic Resonance Spectroscopy(1H NMR) and elemental analysis. Quantitative analysis showed that there was small difference between degrees of quaternization(DQ) and degrees of substitution(DS), and the solubility of chitosan derivatives was demonstrated to be better in the organic solvents.

scholarly journals Properties of Cotton Fabric Modified with a Chitosan Quaternary Ammonium Salt Nanoparticle

2018 ◽  
Vol 26 (4(130)) ◽  
pp. 116-121 ◽  
Author(s):  
Wei Zhang ◽  
Xinlan Dai ◽  
Jinjie Zhou
Keyword(s):  
Cotton Fabric ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Cellulose Fibre ◽  
Water Soluble ◽  
Chitosan Derivative ◽  
Covalent Bonds ◽  
Wrinkle Resistance ◽  
Alkaline Conditions

In this study, a novel fibre-reactive nanoparticle was synthesised in three steps. First a water-soluble chitosan derivative, N-[(2-hydroxy-3-trimethylammonium)propyl] chitosan chloride (short for HTCC), was prepared by reacting chitosan with 2,3-epoxypropyltrimethylammonium chloride. Second the HTCC was further modified by reacting it with N-(hydroxymethyl)- acrylamide to prepare a fibre-reactive chitosan derivative, O-methyl acrylamide quaternary ammonium salt of chitosan (short for NMA-HTCC), which can form covalent bonds with cellulose fibre under alkaline conditions. Thirdly NMA-HTCC nanoparticles were prepared by the ionotropic gelation reaction method. The particle size and TEM researches indicated that the globular NMA-HTCC nanoparticle with a size distribution of 15 - 50 nm was successfully prepared and presented good dispersity and stability. Then the NMA-HTCC nanoparticle was used for the textile finishing of cotton fabric. The modified cotton fabric demonstrated excellent durable wrinkle-resistance and antibacterial activity against Staphylococcus aureus and Escherichia coli, even after 50 repeated launderings. Moreover the shrinkage-resistance of the modified cotton fabric was distinctly improved, and the contact angle was slightly larger, while the whiteness and mechanical properties had not changed in an obvious way.

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