A water-soluble pH fluorescence probe based on quaternary ammonium salt for bioanalytical applications

2015 ◽  
Vol 151 ◽  
pp. 218-224 ◽  
Author(s):  
Xuan-Xuan Zhao ◽  
Di Ge ◽  
Xi Dai ◽  
Wen-Li Wu ◽  
Jun-Ying Miao ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Fluorescence Probe ◽  
Water Soluble ◽  
Bioanalytical Applications

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.

Research of Salt-Free Dyeing of Reactive Dyes on Chitosan Quaternary Ammonium Salt Treated Bombyx mori Silk Fabric

2013 ◽  
Vol 796 ◽  
pp. 347-352
Author(s):  
Wei Zhang ◽  
You Gang Cheng ◽  
Jin Jie Zhou
Keyword(s):  
Bombyx Mori ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Water Soluble ◽  
Processing Temperature ◽  
Silk Fabric ◽  
Reactive Dyeing ◽  
Dyeing Process ◽  
Dyeing Rate

Chitosan quaternary ammonium salt (short for HTCC) was a strong cationic water-soluble polymer. The bombyx Mori silk fabric was treated by HTCC solution and the salt-free reactive dyeing process and properties of modified silk fabric were investigated in this paper. The results showed that salt-free dyeing effect of silk fabric treated with Cibacron Blue FN-G was better when HTCC concentration was 8g/L, the processing temperature was 60°C and the processing time was 35min; the optimum salt-free reactive dyeing process of silk fabric treated by HTCC was: dyeing pH was 8.0, dyeing temperature was 90°C and dyeing time was 70 min; HTCC had obviously promoted dyeing effect, after salt-free dyeing, the dyeing rate, the color fixing rate and the dyeing depth of silk fabric modified by HTCC solution were all increased obviously, and the washing fastness and rubbing fastness were both improved slightly; the smaller molecular weight of chitosan was used to modify to HTCC, the higher dyeing rate and color fixing rate of the treated silk fabric were obtained.

Characterization and Properties of Antheraea pernyi Silk Finished with Reactive Quaternary Ammonium Salt of Chitosan

2011 ◽  
Vol 175-176 ◽  
pp. 288-293 ◽  
Author(s):  
Yan Hua Lu ◽  
De Hong Cheng ◽  
Zhao Dan Yang
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Silk Fiber ◽  
Water Soluble ◽  
Chitosan Derivative ◽  
Sem Images ◽  
Antheraea Pernyi ◽  
Before And After ◽  
Ft Ir

In order to obtain a water soluble and reactive chitosan derivative, quaternary ammonium salt groups and acrylamidomethyl groups were introduced to chitosan by two steps. The chitosan derivative, reactive quaternary ammonium salt of chitosan, was then applied to Antheraea pernyi (A. pernyi) silk by padding and curing method. FT-IR, XRD and SEM were used to characterize the structure of A. pernyi silk before and after treatment. The peak in FT-IR spectra at 1480 cm-1 and 1650 cm-1 revealed the crosslinking reactions of A. pernyi silk fibroin and reactive quaternized chitosan. The XRD results indicated the crystallinity of the treated silk fiber increase a little in comparison with the untreated ones. SEM images clearly showed the reactive quaternary ammonium salt of chitosan attached on the surface of the treated A. pernyi silk fiber, while the surface of the untreated sample was relatively smooth. The thermal stability of the treated silk fiber was enhanced compared to the untreated one by DSC analysis. It was also found that the antibacterial activity of the treated A. pernyi silk fabric against E. coli was more than 99%.

Preparation and characterization of reactive chitosan quaternary ammonium salt and its application in antibacterial finishing of cotton fabric

2016 ◽  
Vol 87 (6) ◽  
pp. 759-765 ◽  
Author(s):  
W Zhang ◽  
JJ Zhou ◽  
XL Dai
Keyword(s):  
Antibacterial Activity ◽  
Ammonium Chloride ◽  
Cotton Fabric ◽  
Ammonium Salt ◽  
Chemical Reaction ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Antibacterial Activities ◽  
Water Soluble ◽  
Better Than

The water soluble and reactive O-methyl acrylamide quaternary ammonium salt of chitosan (NMA-HTCC) was prepared with a view to develop an antibacterial finishing on cotton fabric. 2-hydroxypropyltrimethyl ammonium chloride chitosan (HTCC) was synthesized by the chemical reaction of chitosan and 2,3-epoxypropyltrimethyl ammonium chloride. Then, NMA-HTCC with reactive groups was synthesized by the chemical reaction of HTCC and N-(hydroxymethyl) –acrylamide, and its chemical structure was characterized by the Fourier transform infrared spectroscopy and nuclear magnetic resonance (NMR). The antibacterial activities of chitosan and NMA-HTCC were tested and compared by the minimal inhibitory method. Cotton fabrics were finished by NMA-HTCC under the alkalinity condition using sodium bicarbonate as the catalyst. The antibacterial activity of cotton fabric before and after finishing was measured by the oscillation flask method. The results showed that both chitosan and NMA-HTCC had a significant antibacterial effect on staphylococcus and coli, and the antibacterial activity of NMA-HTCC was better than that of chitosan. The antibacterial activity of cotton fabric to staphylococcus and coli were significantly improved after finishing by chitosan and NMA-HTCC, and the antibacterial activity of the cotton fabric finished by NMA-HTCC was better than that finished by chitosan.

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.

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.

A new water-soluble and colorimetric fluorescent probe for highly sensitive detection of organophosphorus pesticides

RSC Advances ◽  
2016 ◽  
Vol 6 (91) ◽  
pp. 88096-88103 ◽  
Author(s):  
Youming Shen ◽  
Fengmei Yan ◽  
Xi Huang ◽  
Xiangyang Zhang ◽  
Youyu Zhang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Organophosphorus Pesticides ◽  
Water Soluble ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Naphthalimide Dye

A new water-soluble fluorescent probe bearing 1,8-naphthalimide dye, a quaternary ammonium salt and a boronate group was developed for the detection of organophosphorus pesticides.

Sign in / Sign up

Export Citation Format

Share Document