The SILKBridge® nerve conduit was manufactured as previously reported (Alessandrino et al., 2019 (link)). Briefly, two electrospun layers were assembled onto the inner and outer faces of a tubular textile braid according to a patented process (Alessandrino, 2016 ). Coupling of the textile layer with the two electrospun layers was made by means of two different welding media: 1) a solution of ionic liquid (1-ethyl-3-methylimidazolium acetate; EMIMAc; #51053, Sigma-Aldrich) in water (EMIMAc/water 80/20% v/v); 2) a solution of 15% w/w SF in EMIMAc. After electrospinning, the hybrid tubular structure was consolidated by immersion in 80% v/v ethanol for 30 min at room temperature, followed by overnight washing with distilled water and drying. The device was further purified by microwave aided extraction with ethanol to remove processing aids, packaged under a laminar flow cabinet and sterilized with ethylene oxide (EtO).
Emimac
Manufactured by Merck Group
Sourced in United States
EMIMAc is a laboratory reagent produced by Merck Group. It is an ionic liquid with the chemical formula 1-Ethyl-3-methylimidazolium acetate. EMIMAc is commonly used as a solvent and reaction medium in various chemical and biochemical applications.
Automatically generated - may contain errors
Lab products found in correlation
Dimethyl sulfoxide (dmso), by Merck Group (3 mentions)
Remazol brilliant blue r, by Merck Group (1 mentions)
Emim cl, by Merck Group (1 mentions)
Orange 2, by Merck Group (1 mentions)
N n dimethylformamide (dmf), by Merck Group (1 mentions)
Bmimac, by Merck Group (1 mentions)
1 ethyl 3 methylimidazolium chloride, by Merck Group (1 mentions)
1 butyl 3 methylimidazolium chloride, by Merck Group (1 mentions)
1 ethyl 3 methylimidazolium acetate, by Merck Group (1 mentions)
1 butyl 3 methylimidazolium acetate, by Merck Group (1 mentions)
1 butyl 3 methylimidazolium hydrogen sulfate, by Merck Group (1 mentions)
5 protocols using emimac
1
Fabrication of Multifunctional Nerve Conduit
2
Preparation and Aging of Ionogel-Based Heat Exchanger
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Ionogel was prepared by impregnating Syloid 72FP (W.R. Grace, USA) with EMIM Ac (97 % purity, Sigma Aldrich, USA) achieving a mass proportion of Syoloid 72FP/EMIM Ac 43 wt%/57 wt%. Afterwards, one heat exchanger was prepared and weighed as follows:
drying of the heat exchanger; filling it with ionogel by compacting it in monoliths in between the fins; drying the ionogel inside the heat exchanger at 80 • C.
The ionogel inside the heat exchanger was aged to minimise the leakage of ionic liquid inside the test rig. 43 The ageing process included adsorption of water for 40 h at high humidity and ambient conditions and water desorption from the ionogel inside the heat exchanger at 80 • C. The heat exchanger was filled with 25.1 g of ionogel with an EMIM Ac content of 57 wt% for the experiments in the test rig. The amount of ionogel was reduced to 25.1 g to limit the total amount of water evaporating during a cycle to achieve a more homogeneous temperature distribution in the evaporator.
drying of the heat exchanger; filling it with ionogel by compacting it in monoliths in between the fins; drying the ionogel inside the heat exchanger at 80 • C.
The ionogel inside the heat exchanger was aged to minimise the leakage of ionic liquid inside the test rig. 43 The ageing process included adsorption of water for 40 h at high humidity and ambient conditions and water desorption from the ionogel inside the heat exchanger at 80 • C. The heat exchanger was filled with 25.1 g of ionogel with an EMIM Ac content of 57 wt% for the experiments in the test rig. The amount of ionogel was reduced to 25.1 g to limit the total amount of water evaporating during a cycle to achieve a more homogeneous temperature distribution in the evaporator.
3
Composite Cellulose-Silk Film Fabrication
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Cellulose and silk were prepared as discussed above. Composite films of cellulose:silk in a 75:25 ratio were prepared as before (Singh et al., 2013 (link)). Briefly, polymers were weighed to prepare a 1.5% concentration solution in 5 g of 1-ethyl-3-methylimidazolium acetate (EMIMAc, Sigma Aldrich) which was then heated to 85°C with stirring, for 2 h. Polymer solutions were then poured into pre-heated glass dishes and left to cool overnight. Ethanol:acetic acid (EtOH:AcOH 90:10, respectively) was then added to aid coagulation of the polymers. Samples were covered and left overnight. Any remaining solvent was then removed by immersing in distilled water. The 2D films were then dried on parafilm.
4
Cellulose Nanofiltration Membranes from Ionic Liquids
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Cellulose (Baikal Cellulose and Paper Mill, Baikalsk, Russia) had a polymerization degree of 600 and contained 92% alpha-cellulose and less than 6% water. [EMIM]Ac, [EMIM]Cl, and [BMIM]Ac (Sigma-Aldrich, Steinheim, Germany) were used as ionic solvents, which were diluted with DMSO (Sigma-Aldrich) as a nominal co-solvent of cellulose. Non-woven polyester fabric (Crane Technical Materials, Pittsfield, MA, USA), which had a density of 87 g/m2, a thickness of 90–99 μm, and an air permeability of 16.0–29.6 cm·s−1·Pa−1, was used as a micro-porous substrate for impregnating with cellulose solution and subsequent production of cellulose nanofiltration membranes. Distilled water, methanol, ethanol, and isopropanol (Himmed, Moscow, Russia) were used as non-solvents (precipitants), while hexane (Himmed) was applied for the post-processing of formed membranes. The transport properties of obtained cellulose membranes were investigated by using DMF (Sigma-Aldrich) with dissolved dyes Orange II (350 g/mol, Sigma-Aldrich) and Remazol Brilliant Blue R (626 g/mol, Sigma-Aldrich). All reagents were chemically pure and used without additional purification.
5
Eucalyptus Kraft Pulp Dissolution in Ionic Liquids
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The Eucalyptus Bleached Hardwood Kraft Pulp (BHKP) provided by one Chilean Kraft Pulp Mill was used in all the experiments. The chemical composition of the BHKP is listed in Table 1 .
Chemical reagents: dimethyl sulfoxide or DMSO (CAS No.67-68-5, purity ≥ 99.7), 1-butyl-3-methylimidazolium chloride or [bmim][Cl] (CAS No.79917-90-1, purity > 98%), 1-butyl-3-methylimidazolium acetate or [bmim][Ac] (CAS No.284049-75-8, purity > 95%), 1-butyl-3-methylimidazolium hydrogen sulfate or [bmim][HSO4] (CAS No. 262297-13-2, purity > 95%), 1-Ethyl-3-methylimidazolium chloride or [emim][Cl] (CAS No.65039-09-0, purity = 98%) and 1-Ethyl-3-methylimidazolium acetate or [emim][Ac] (CAS No. 143314-17-4, purity = 97%) were purchased from Sigma-Aldrich and stored in inert atmosphere until its use. The ILs’ water content before drying was measured for all ILs by Karl Fischer titration, as in our previous work [33 (link)]. The water content of all ILs previous drying was less than 2800 ppm or 0.28% w/w. Therefore, a vacuum drying step was added in order to ensure a water content lower than this percentage. Despite this, it was challenging to precisely measure the water content of the IL in the pulp dissolving process due to environment condensed water and that within the pulp.
Chemical reagents: dimethyl sulfoxide or DMSO (CAS No.67-68-5, purity ≥ 99.7), 1-butyl-3-methylimidazolium chloride or [bmim][Cl] (CAS No.79917-90-1, purity > 98%), 1-butyl-3-methylimidazolium acetate or [bmim][Ac] (CAS No.284049-75-8, purity > 95%), 1-butyl-3-methylimidazolium hydrogen sulfate or [bmim][HSO4] (CAS No. 262297-13-2, purity > 95%), 1-Ethyl-3-methylimidazolium chloride or [emim][Cl] (CAS No.65039-09-0, purity = 98%) and 1-Ethyl-3-methylimidazolium acetate or [emim][Ac] (CAS No. 143314-17-4, purity = 97%) were purchased from Sigma-Aldrich and stored in inert atmosphere until its use. The ILs’ water content before drying was measured for all ILs by Karl Fischer titration, as in our previous work [33 (link)]. The water content of all ILs previous drying was less than 2800 ppm or 0.28% w/w. Therefore, a vacuum drying step was added in order to ensure a water content lower than this percentage. Despite this, it was challenging to precisely measure the water content of the IL in the pulp dissolving process due to environment condensed water and that within the pulp.
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