Synthesis of N-[(3'-Hydroxy-2',3'-dicarboxy)- ethyl]chitosan:A New, Water-Soluble Chitosan Derivative

1995 ◽  
Vol 28 (26) ◽  
pp. 8865-8867 ◽  
Author(s):  
James V. Gruber ◽  
Venceslav Rutar ◽  
Jagdeesh Bandekar ◽  
Peter N. Konish
Keyword(s):  
Water Soluble ◽  
Chitosan Derivative

scholarly journals Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

2020 ◽  
Vol 38 (3-4) ◽  
pp. 113-126
Author(s):  
Qiaoling Xie ◽  
Gaojie Liang ◽  
Tao Lin ◽  
Fuming Chen ◽  
Dandan Wang ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Photoelectron Spectroscopy ◽  
Water Soluble ◽  
Optimum Conditions ◽  
Chitosan Derivative ◽  
Aqua Regia ◽  
Electroplating Wastewater ◽  
X Ray ◽  
Approach Method ◽  
Palladium Metal

A study on selective chelating precipitation of palladium metal from real electroplating wastewater using chitosan and its water-soluble derivative was conducted. The pH parameter, the concentrations of chitosan and its water-soluble derivative and the chelating precipitation time were experimentally investigated, and the optimum conditions were determined. The results revealed that both chitosan and its water-soluble derivative acted as chelating precipitation agents. Rapid chelating precipitation occurred when chitosan was added to real electroplating wastewater containing the chitosan derivative, thereby improving removal efficiency of palladium in different forms up to 95% under the optimum condition of 0.2 g/L chitosan and 0.16 mg/L derivative at pH 2.5. Then, dissolution experiments showed that chelating precipitation products could be dissolved in aqua regia. Additionally, selective chelating precipitation of palladium by chitosan and its derivative was characterized using X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Thus, it can be concluded that the combined utilization of chitosan and its water-soluble derivative is a promising approach method for the removal of different forms of palladium from real electroplating wastewater.

Green and facile synthesis of water-soluble ZnS quantum dots nanohybrids using chitosan derivative ligands

2014 ◽  
Vol 16 (7) ◽  
Author(s):  
Fábio P. Ramanery ◽  
Alexandra A. P. Mansur ◽  
Fernanda G. L. M. Borsagli ◽  
Herman S. Mansur
Keyword(s):  
Quantum Dots ◽  
Water Soluble ◽  
Chitosan Derivative ◽  
Facile Synthesis

Novel water-soluble chitosan derivative prepared by graft polymerization of dicyandiamide: synthesis, characterisation, and its antibacterial property

2015 ◽  
Vol 22 (6) ◽  
Author(s):  
Esra Suliman Khalil ◽  
Bahruddin Saad ◽  
El-Sayed Moussa Negim ◽  
Muhammad Idiris Saleh
Keyword(s):  
Graft Polymerization ◽  
Antibacterial Property ◽  
Water Soluble ◽  
Chitosan Derivative

Preparation and characterization of water-soluble chitosan derivative by Michael addition reaction

2010 ◽  
Vol 47 (5) ◽  
pp. 696-699 ◽  
Author(s):  
Mingyan Jiang ◽  
Kemin Wang ◽  
John F. Kennedy ◽  
Jun Nie ◽  
Qiang Yu ◽  
...  
Keyword(s):  
Michael Addition ◽  
Addition Reaction ◽  
Water Soluble ◽  
Michael Addition Reaction ◽  
Chitosan Derivative

scholarly journals Development of a quaternized chitosan with enhanced antibacterial efficacy

2013 ◽  
Vol 11 (3) ◽  
pp. 410-418 ◽  
Author(s):  
Gurpreet Kaur Khaira ◽  
Rashmi Kumariya ◽  
Manmohan Chibber ◽  
Moushumi Ghosh
Keyword(s):  
Water Soluble ◽  
Ammonium Compound ◽  
Escherichia Coli O157 ◽  
Waterborne Pathogens ◽  
Chitosan Derivative ◽  
Quaternized Chitosan ◽  
Short Contact Time ◽  
Ldh Activity ◽  
Low Dosage ◽  
Cell Supernatant

The antibacterial activity of a water-soluble chitosan derivative prepared by chemical modification to quaternary ammonium compound N,N,N-trimethylchitosan (TC) was investigated against four selected waterborne pathogens: Aeromonas hydrophila ATCC 35654, Yersinia enterocolitica ATCC 9610, Listeria monocytogenes ATCC 19111 and Escherichia coli O157:H7 ATCC 32150. An inactivation of 4 log CFU/ml of all waterborne pathogens was noted for the quaternized chitosan as compared with chitosan over a short contact time (30 min) and low dosage (4.5 ppm) at ambient temperature. A marked increase in glucose level, protein content and lactate dehydrogenase (LDH) activity was observed concurrently in the cell supernatant to be a major bactericidal mechanism. The results suggest that the TC derivative may be a promising commercial substitute for acid-soluble chitosan for rapid and effective disinfection of water.

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.

Water-soluble cationic chitosan derivative to improve pigment-based inkjet printing and antibacterial properties for cellulose substrates

2012 ◽  
Vol 125 (3) ◽  
pp. 1674-1680 ◽  
Author(s):  
Guangjiu Bu ◽  
Chaoxia Wang ◽  
Shaohai Fu ◽  
Anli Tian
Keyword(s):  
Inkjet Printing ◽  
Antibacterial Properties ◽  
Water Soluble ◽  
Chitosan Derivative ◽  
Cellulose Substrates

scholarly journals One-pot green synthesis of antimicrobial chitosan derivative nanocomposites to control foodborne pathogens

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 1095-1104
Author(s):  
Mahmoud H. Abu Elella ◽  
Ahmed Esmail Shalan ◽  
Magdy W. Sabaa ◽  
Riham R. Mohamed
Keyword(s):  
Green Synthesis ◽  
Silver Nitrate ◽  
Foodborne Pathogens ◽  
Antimicrobial Agents ◽  
Water Soluble ◽  
Chitosan Derivative ◽  
One Pot ◽  
The One

This study aimed to show the efficacy of the one-pot green biosynthesis of nanocomposites as effective antimicrobial agents based on a water-soluble biodegradable polysaccharide and silver nitrate (AgNO3).

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