Photoinduced cografting of vinyl benzyl trimethylammonium chloride and 2-hydroxyethyl methacrylate onto nylon nonwoven fabric for preparing an anion-exchange sorbent: Optimum cografting conditions and characterization

2010 ◽  
pp. NA-NA
Author(s):  
Choon-Ki Na ◽  
Hyun-Ju Park
Keyword(s):  
Anion Exchange ◽  
Nonwoven Fabric ◽  
Trimethylammonium Chloride ◽  
Hydroxyethyl Methacrylate ◽  
Vinyl Benzyl

Isolation of immunoglobulin G from bovine milk whey by poly(hydroxyethyl methacrylate)-based anion-exchange cryogel

2013 ◽  
Vol 36 (15) ◽  
pp. 2387-2393 ◽  
Author(s):  
Shasha Dong ◽  
Liang Chen ◽  
Bin Dai ◽  
Wilfred Johnson ◽  
Jialei Ye ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Immunoglobulin G ◽  
Bovine Milk ◽  
Hydroxyethyl Methacrylate ◽  
Milk Whey

Synthesis and characterization of poly(acryloxyethyl-trimethylammonium chloride-co-2-hydroxyethyl methacrylate): A study of its interaction with sodium alginate

2008 ◽  
Vol 108 (3) ◽  
pp. 1680-1688 ◽  
Author(s):  
Oscar Valdés ◽  
Dagmar Monett ◽  
Lissette Agüero ◽  
Dionisio Zaldívar ◽  
Larissa Alexandrova ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Synthesis And Characterization ◽  
Trimethylammonium Chloride ◽  
Hydroxyethyl Methacrylate

Preparation and electrochemical characterisation of anion exchange polymer coated electrodes towards sensing applications

2021 ◽  
Author(s):  
◽  
Matthew J. Rees
Keyword(s):  
Diffusion Coefficient ◽  
Blood Glucose ◽  
Anion Exchange ◽  
Indium Tin Oxide ◽  
Electrode Materials ◽  
Detection Limits ◽  
Absorption Spectrometry ◽  
Modified Carbon Paste Electrode ◽  
Trimethylammonium Chloride ◽  
Sensing Applications

This thesis concerns with the investigation of electrochemical processes at the electrode interface, using different electrode materials coated with anion exchange polymers. There is an ongoing interest in analytical chemistry, with focus on developing sensors with high sensitivity and selectivity to detect specific analytes, sensors can be fabricated to enhance these characteristics. Anion conducting polymers usually used in Anion exchange membrane fuel cells (AEMFC), which gives the potential to use non-platinum based electrocatalysts in its operation, are useful in this respect in electroanalytical applications, as their selectivity towards negative species in solution allow their preconcentration at the electrode surface. Two polymers were used in this project, Hexamethyl-p-terphenyl poly(benzimidazolium) - HMT-PMBI and poly(ethylene-co-tetrafluoroethylene)-g-poly(benzyl-trimethylammonium chloride) – BTMA. The former was utilized by dropcasting solution onto glassy carbon electrode (GCE) and layering indium tin oxide substrate (ITO) with Langmuir Schaefer (LS) films and BTMA was used to fabricate a modified carbon paste electrode. Amperometric sensors are very attractive compared to other analytical methods such as, atomic absorption spectrometry (AAS) and molecular absorption spectrometry (MAS) because of their potential low cost and the possibility to perform measurements in situ using portable devices. Applications for these devices can be utilised in many industries, including medical, environmental and food. A common example of a commercial sensor is the blood glucose sensor, which uses the enzyme glucose oxidase to break blood glucose down. To investigate the basic electrochemical properties of the different electrodes, redox mediators were used. These oxidation and reduction reactions agree with the theory i.e. Randles – Sevcik equation and the calculation of the apparent diffusion coefficient. This was calculated to be 10-9 – 10-10 for HMT-PMBI coated electrode. The significance of this is, the smaller the diffusion coefficient the slower the rate of diffusion through a substance.In order to ascertain the suitability of the as-prepared ionomer films and paste for electrocatalytic sensing studies, investigations into the electrochemical behavior of HMT-PMBI and BTMA towards the detection of mercury (Hg), uric acid (UA) and ascorbic acid (AA). These have been selected to study because they are negative species, and hence the polymer is positive which will have selectivity towards these. All modified electrodes show attractive limit of detections for UA and AA i.e. in the range of harmful levels in blood and urine – over 530 µM in females and 619 µM in males for UA, and sensitives compared to selected peer reviewed journals which have also used sensors for the detection of analytes in this project. Where the detection limits range from 0.05 – 15 µM81-95 for UA and 0.002 – 300 µM for AA80-87,114-120. Compared to this work where the detection limits for BTMA-CPE range between 0.84 – 9.5 μM for UA, 1.43 – 50 μM for AA, the HMT-PMBI GCE range between 6 – 18 μM for UA, 17 – 81 μM for AA and the 20L HMT-PMBI ITO range between 2.2 – 26 μM for UA, 16.9 – 19.1 μM for AA.

scholarly journals Small nanosized poly(vinyl benzyl trimethylammonium chloride) based polyplexes for siRNA delivery

2017 ◽  
Vol 525 (2) ◽  
pp. 388-396 ◽  
Author(s):  
Bo Lou ◽  
Nataliia Beztsinna ◽  
Grigoris Mountrichas ◽  
Joep B. van den Dikkenberg ◽  
Stergios Pispas ◽  
...  
Keyword(s):  
Sirna Delivery ◽  
Trimethylammonium Chloride ◽  
Vinyl Benzyl

scholarly journals Higher Acid Recovery Efficiency of Novel Functionalized Inorganic/Organic Composite Anion Exchange Membranes from Acidic Wastewater

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 133
Author(s):  
Muhammad Imran Khan ◽  
Abdallah Shanableh ◽  
Noureddine Elboughdiri ◽  
Karim Kriaa ◽  
Djamel Ghernaout ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Mechanical Stability ◽  
Filler Particle ◽  
Exchange Capacity ◽  
Inorganic Filler ◽  
Anion Exchange Membranes ◽  
Trimethylammonium Chloride ◽  
Severe Condition ◽  
Acid Recovery ◽  
Diffusion Dialysis

In this work, the synthesis of a series of the functionalized inorganic/organic composite anion exchange membranes (AEMs) was carried out by employing the varying amount of inorganic filler consist of N-(trimethoxysilylpropyl)-N,N,N-trimethylammonium chloride (TMSP-TMA+Cl−) into the quaternized poly (2, 6-dimethyl-1, 4-phenylene oxide) (QPPO) matrix for acid recovery via diffusion dialysis (DD) process. Fourier transform infrared (FTIR) spectroscopy clearly demonstrated the fabrication of the functionalized inorganic/organic composite AEMs and the subsequent membrane characteristic measurements such as ion exchange capacity (IEC), linear swelling ratio (LSR), and water uptake (WR) gave us the optimum loading condition of the filler without undesirable filler particle aggregation. These composite AEMs exhibited IEC of 2.18 to 2.29 meq/g, LSR of 13.33 to 18.52%, and WR of 46.11 to 81.66% with sufficient thermal, chemical, and mechanical stability. The diffusion dialysis (DD) test for acid recovery from artificial acid wastewater of HCl/FeCl2 showed high acid DD coefficient (UH+) (0.022 to 0.025 m/h) and high separation factor (S) (139-260) compared with the commercial membrane. Furthermore, the developed AEMs was acceptably stable (weight loss < 20%) in the acid wastewater at 60 °C as an accelerated severe condition for 2 weeks. These results clearly indicated that the developed AEMs have sufficient potential for acid recovery application by DD process.

Diamine crosslinked anion exchange membranes based on poly(vinyl benzyl methylpyrrolidinium) for alkaline water electrolysis

2021 ◽  
pp. 119418
Author(s):  
Huanhuan Li ◽  
Na Yu ◽  
Florian Gellrich ◽  
Alexander Kappel Reumert ◽  
Mikkel Rykær Kraglund ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Water Electrolysis ◽  
Anion Exchange Membranes ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water ◽  
Vinyl Benzyl

Determination of Intimate Composition of Theranostic Polyplexes Based on (Co)Polymers of Poly(vinyl benzyl trimethylammonium chloride)

2017 ◽  
Vol 219 (4) ◽  
pp. 1700428 ◽  
Author(s):  
Emi Haladjova ◽  
Grigoris Mountrichas ◽  
Stergios Pispas ◽  
Stanislav Rangelov
Keyword(s):  
Trimethylammonium Chloride ◽  
Vinyl Benzyl
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