Acrylic acid (Sinopharm Chemical Reagent Co., Ltd.), chitosan (Sinopharm Chemical Reagent Co., Ltd.) and glucose (Sinopharm Chemical Reagent Co., Ltd.) were used as the polymer monomers. Potassium persulfate (Sinopharm Chemical Reagent Co., Ltd.) was used as the initiator. NN′-Methylenebisacrylamide (Sinopharm Chemical Reagent Co., Ltd, Shanghai, China) was the cross-linking agent. Other reagents such as sodium hydroxide, ethanol, copper nitrate pentahydrate and cobalt nitrate tetrahydrate were purchased from Shanghai McLean Biochemical Co., Ltd.
N n methylenebisacrylamide
Manufactured by Sinopharm
Sourced in China
N,N′-methylenebisacrylamide is a chemical compound used as a crosslinking agent in various laboratory applications. It is a white, crystalline solid that is soluble in water and common organic solvents.
Automatically generated - may contain errors
Lab products found in correlation
Acrylamide, by Sinopharm (7 mentions)
Ammonium persulfate, by Sinopharm (4 mentions)
Acrylic acid, by Sinopharm (3 mentions)
Sodium hydroxide (naoh), by Sinopharm (3 mentions)
Glucose, by Sinopharm (2 mentions)
Potassium persulfate, by Sinopharm (2 mentions)
Sodium dodecyl sulfate (sds), by Sinopharm (2 mentions)
Chitosan, by Sinopharm (1 mentions)
Phosphomolybdic acid hydrate, by Sinopharm (1 mentions)
Ammonium hydroxide, by Sinopharm (1 mentions)
Sodium bisulfite, by Sinopharm (1 mentions)
Anhydrous calcium chloride, by Sinopharm (1 mentions)
Tween 80, by Sinopharm (1 mentions)
Potassium dihydrogen phosphate, by Beijing Chemical Works (1 mentions)
Lysozyme lys, by Yuanye Bio-Technology (1 mentions)
2 hydroxy 2 methylpropiophenone, by J&K Scientific (1 mentions)
Bovine serum albumin (bsa), by Merck Group (1 mentions)
Copper 1 bromide, by Merck Group (1 mentions)
Copper 2 bromide, by Merck Group (1 mentions)
Chloroauric acid, by Sinopharm (1 mentions)
13 protocols using n n methylenebisacrylamide
1
Tunable Hydrogel Synthesis and Properties
2
Acrylamide-based Gel Preparation
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Acrylamide, N,N′-methylenebisAcrylamide, ammonium persulfate, phosphomolybdic acid hydrate, and ammonium hydroxide were obtained from Sinopharm Chemical Reagent Co., Ltd. No purification was performed on these chemicals before use. The resistance of the deionized (DI) water used in the reactions is 18.2 MΩ cm−1.
3
Synthesis of Polymer Materials
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Acrylamide, sodium bisulfite, ammonium persulfate, sodium hydroxide, and N, N’-methylene bisAcrylamide are chemically pure reagents that were purchased from Sinopharm Chemical Reagent Co. Ltd., China. Nitrogen, >99% purity; 10# white oil; 4A zeolite powder; lithium soap clay; sericite; and industrial products were purchased from Shandong Usolf Chemical Technology Co., Ltd., China.
4
Stimuli-Responsive Alginate-Based Hydrogels
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Sodium alginate powder (Alg), sodium acrylate (SA) and methyl acrylate (MA) were purchased from Aladdin Industrial Corporation; N,N′-methylenebisacrylamide (MBAA), dichloromethane (CH2Cl2), α-methacrylic acid (MAA), ammonium persulfate (APS), Tween 80 and anhydrous calcium chloride (CaCl2) were supplied by Sinopharm Chemical Reagent Co., Ltd., Beijing, China. 4-Dimethylaminopyridine (DMAP), N,N′-dicyclohexylcarbodiimide (DCC) and N,N,N′,N′-tetramethylethylenediamine (TEMED) were purchased from Aladdin Industrial Corporation, Shanghai, China. 1-(2-Hydroxyethyl)-3,3-dimethylindolino-6′-nitrobenzopyrylospiran (SPOH) was supplied by TCI (Shanghai) Development Co., Ltd., Shanghai, China. Deionised water was used in all experiments (18.2 Ω cm resistivity at 25 °C).
5
Synthesis of Chitosan-Laponite Hydrogels
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Chitosan, which has, when measured by viscometry, a molecular weight of 2.4 × 105 g·mol−1 and an 85% degree of deacetylation, was supplied by Haidebei Marine Bioengineering Co. (Jinan, China), refined twice by dissolution in a 0.1 mol·L−1 HCl solution, filtered, precipitated with ethanol, and finally dried in vacuo at 50 °C for 48 h. Laponite XLG (Mg5.34Li0.66Si8O20(OH)4Na0.66) was provided by Rockwood (Wesel, Germany). Acrylamide (AM, 98%), acrylic acid (AA, 98%), 2-acrylamido-2-methylpropanesulfonic acid (AMPS, 98%), potassium persulfate (KPS, 99%) and N,N′-methylenebisAcrylamide (MBA, 98%) were purchased from Sinopharm Chemical Reagent Co. Ltd. (Shanghai, China). Other chemicals were analytical reagents and used as received.
6
Bovine-Derived Biomaterials Synthesis
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Fibrinogen (Fib.), fraction I from bovine plasma, lysozyme (Lys.), and mucin (Muc.) from bovine submaxillary gland were purchased from Shanghai Yuanye Biotechnology Co. Ltd. Bovine serum albumin (BSA), copper(i ) bromide (99%), copper(ii ) bromide (99%) and Me4Cyclam (98%) were obtained from Sigma-Aldrich. N-(3-Sulfopropyl)-N-(methacryloxyethyl)-N,N-dimethylammoniumbetaine (SBMA, 99%), 2-hydroxy-2-methylpropiophenone (HMPP, 99%) were purchased from J&k. ω-Mercaptoundecyl bromoisobutyrate (MUBiB, ≥95%) was obtained from Shanghai D&B Biological Science Technology Co. Ltd. N,N-Methylenebisacrylamide (Bis, 98%) was purchased from Sinopharm Chemical Reagent Co. Ltd. 3-Acrylamidophenylboronic acid (PBA, 98%) was obtained from Ark Pharm. Acrylamide (AM, 98.5%) was purchased from Xilong Chemical Industry. Sulfuric acid (H2SO4, AR), hydrogen peroxide (H2O2, 30% aqueous solution), ethanol (C2H5OH, AR), dimethyl sulfoxide (DMSO, AR), glucose (C6H1206, AR), sodium phosphate dibasic dodecahydrate (Na2HPO4, AR), and potassium dihydrogen phosphate (KH2PO4, AR) were purchased from Beijing Chemical Factory. Water used in the experiments was purified using a Millipore water purification system (UPR-II-10TNZP, Sichuan Youpu Ultrapure Technology Co. Ltd.). The saliva was collected from volunteers.
7
Grafting of Acrylic Acid with α-CD and Starch
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A comparative experiment was carried out by grafting acrylic acid with α-CD and starch. α-CD (1 g) and starch were weighed and placed in 30 mL neutralized 80% acetic acid solution, respectively. Deionized water (50 mL), N,N′-methylenebisacrylamide (10 mL, 0.01 g/mL, Sinopharm Group, Wuxi, China), and potassium persulfate (10 mL, 0.1 g/mL) were added into the solution, and the mixtures were maintained at 60 °C to achieve gelatinization. The product was extracted with acetone as a solvent and evacuated in a Soxhlet extractor for 12 h.
8
Synthesis of Silver and Gold Nanoparticles
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NIPAM (TCI) was purified by recrystallization from n-hexane/benzene (40/60, v/v) before use. MAPTMS was supplied by Alfa Aesar. PVP (Mw ≈ 30 000), sodium citrate, glucose, silver nitrate (AgNO3), NH3·H2O (25 wt%), sodium dodecyl sulfate (SDS), N,N′-methylenebisacrylamide (MBA), ammonium persulfate (APS), chloroauric acid (HAuCl4, 99.3%), absolute ethanol, sodium borohydride (NaBH4), 4-NP, and sodium hydroxide (NaOH) were purchased from Sinopharm Chemical Reagent Co. (China) and used as received. Doubly distilled water was used in all experiments.
9
Synthesis of α-SiC Powder Composites
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Commercial α-SiC powders (d50 = 0.45 μm, 99% purity) were purchased from Yonghao silicon carbide micro powder Co. Ltd., Weifang, China. Acrylamide (AR), N’N’-methylenebisAcrylamide (AR), ammonia solution (25 wt.%), H2O2 (30 wt.%), and sodium dodecyl sulfate (AR) were purchased from Sinopharm Chemical Reagent Co. Ltd., Shanghai, China. Sucrose (CR) was purchased from Sigma-Aldrich (St. Louis, MO, USA) [31 (link)]. All chemicals were used as received.
10
Hydrogel Synthesis and SRS Imaging
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To prepare hydrogel solution, 1.6 g acrylamide (80001326, Sinopharm) was dissolved in 1 mL deionized water in 37 °C water bath for 10 min, and then 0.2 g Irgacure 2959 (B2959, BASF) and 0.2 g N,N′‐methylenebisacrylamide (30117826, Sinopharm) were added to the solution for additional 20 min. Before SRS imaging, a drop of hydrogel solution was sealed between two cover glasses (48393‐172, VWR). Monomers including HEA (H810915, Macklin), MMA (M813513, Macklin), HMA (H102084, Aladdin), tBA (B802797, Macklin), and MA (M812690, Macklin) were blended with 2% 2‐hydroxy‐2‐methylpropiophenone (H811172, Macklin), which was served as initiator. These solutions were polymerized by a 365 nm LED light source with intensity of about 12 mW cm−2.
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