Gellan gum (Mw = 1 × 106 g/mol), ammonium persulfate, N,N,N′,N′-tetramethylethylenediamine, acetone, ethanol, sodium chloroacetate, hydrochloric acid, potassium chloride, monobasic and dibasic sodium phosphate and cefotaxime sodium salt were supplied from Sigma-Aldrich, Germany and were used as received. N-vinylimidazole was purchased from Sigma Aldrich, Germany and was distilled under vacuum. Ultrapure grade water (Ω < 10−6 s/cm) was prepared by purifying deionized water with Millipore Simplicity-UV apparatus.
N vinylimidazole
Manufactured by Merck Group
Sourced in Germany
N-vinylimidazole is a chemical compound used in various laboratory applications. It serves as a monomer for the synthesis of polymers and as a precursor for the preparation of other organic compounds. N-vinylimidazole possesses a vinyl group and an imidazole ring, which contribute to its versatility in chemical reactions and formulations.
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Lab products found in correlation
Gellan gum, by Merck Group (1 mentions)
Sodium chloroacetate, by Merck Group (1 mentions)
Monobasic and dibasic sodium phosphate, by Merck Group (1 mentions)
Cefotaxime sodium salt, by Merck Group (1 mentions)
Simplicity uv apparatus, by Merck Group (1 mentions)
Ethanol, by Merck Group (1 mentions)
Acetone, by Merck Group (1 mentions)
Ammonium persulfate, by Merck Group (1 mentions)
Hydrochloric acid (hcl), by Merck Group (1 mentions)
Potassium chloride (kcl), by Merck Group (1 mentions)
Potassium hexafluorophosphate, by Thermo Fisher Scientific (1 mentions)
Tissue paper, by Kimberly-Clark (1 mentions)
Sudan red 7b, by Merck Group (1 mentions)
2 2 azobis 2 methylpropionitrile, by Merck Group (1 mentions)
N hexane, by Avantor (1 mentions)
Methylene blue, by Merck Group (1 mentions)
N n dimethylformamide (dmf), by Merck Group (1 mentions)
Divinylbenzene, by Merck Group (1 mentions)
Sodium tetrafluoroborate, by Merck Group (1 mentions)
Lithium bis trifluoromethane sulfonyl imide litfsi, by IoLiTec (1 mentions)
6 protocols using n vinylimidazole
1
Gellan Gum-Based Hydrogel Synthesis
2
Synthesis and Characterization of Ionic Liquid Polymer
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Divinylbenzene (DVB, 80% mixture of isomers), N-vinyl imidazole (VIm, 99%), sodium tetrafluoroborate (NaBF4, 98%), N,N-dimethylformamide (99.8%), methylene blue (98%), and Sudan red 7B (98%) were obtained from Sigma-Aldrich. 1-Bromoethane (98%), and potassium hexafluorophosphate (KPF6, 99%) were obtained from Alfa Aesar. Lithium bis(trifluoromethane sulfonyl)imide (LiTFSI, 99%) was obtained from IOLITEC Ionic liquids Technologies GmbH. n-Hexane was obtained from VWR International. 2,2′-Azobis(2-methylpropionitrile) (AIBN, 98%, Sigma-Aldrich) was recrystallized from methanol before use. The ionic liquid monomer 1-ethyl-3-vinylimidazolium bromide (EVImBr) was synthesized according to previous work46 (link). Water used in the experiments was deionized. The tissue paper was purchased from Kimberly-Clark.
3
Synthesis of N-vinylimidazole Polymer
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The initial N-vinylimidazole (99%), azobisisobutyronitrile (AIBN, 99%), copper acetate monohydrate (Cu(CH3COO)2∙H2O, 99.99%), ascorbic acid (99.99%) and deuterium oxide (D2O) were purchased from Sigma-Aldrich (Munich, Germany) and used as received without further purification. Ethanol (95%, OJSC “Kemerovo Pharmaceutical Factory”, Kemerovo, Russia) was distilled and purified according to the known procedures. H2O was used as deionized. Argon (BKGroup, Moscow, Russia) with a purity of 99.999 was used in the reaction.
4
Characterization of Cysteine Proteases
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Cysteine proteases, namely bromelain (B4882), papain (P4762), and ficin (F4165), supplied by Sigma-Aldrich, Munich, Germany, were selected as the subjects of this research. Azocasein purchased from Sigma-Aldrich, Munich, Germany, was used as the hydrolysis substrate in the evaluation assays for catalytic activity. Carboxymethyl cellulose sodium salt with a molecular weight of 90,000 and a degree of substitution of 0.7, along with N-vinylimidazole, were both acquired from Sigma-Aldrich, Munich, Germany for graft copolymer synthesis. The monomer was purified through vacuum distillation before use and was characterized by the following parameters: bp = 78–79 °C/11 mm Hg; n20D = 1.5338.
5
Synthesis and Characterization of Polymer Electrolyte Membranes
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N-[3-(dimethylamino)propyl]methacrylamide (DMEA), N-vinyl imidazole, N-hydroxyethyl acrylamide (HEAA), poly(acrylic acid) (PAA, average molecular weight 1250 kDa), N-bromosuccinimide (NBS), biphenyl peroxide (BPO), chlorobenzene (PhCl), and N,N-dimethylacetamide (DMAc) were purchased from Merck (Sigma Aldrich Chemical Co). IGM Resins B.V. (Waalwijk, The Netherlands) provided the 2-Hydroxy-2-methyl-1-phenylpropanone (Omnirad 1173). The pristine PPO (20 kDa, polydyspersity~2.5) was purchased from PolySciences, Inc (Warrington, PA, USA). All chemical reagents were chemically of a pure grade and were used as supplied, without further purification. Nafion® 115 (N115) (Chemours, Wilmington, DE, USA) and Fumasep® FAP 450 (Fumatech GmbH, Bietigheim-Bissingen, Germany) were purchased at Fuel Cell Store Inc. (College Station, TX, USA). PVC-silica porous substrates (median pore size 60 nm, volume porosity: 60%, 600 µm thick) were produced in-house by Amer-sil S.A., Kehlen, Luxembourg [43 ].
6
Sodium Alginate-based Hydrogel Synthesis
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Sodium alginate was acquired via (Nice Chemicals Pvt. Ltd.) with viscosity of 1000–1200 cPs. N-Vinyl imidazole (NVI) was obtained from Merck (Schuchardt OHG, Hohenbrunn, Germany) company. Potassium persulfate (KPS) was purchased from (Sigma-Aldrich, USA). No further purification was needed for the other reagents and solvents that were used in the current study as they were bought with the standard analytical grades.
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