The sol-gel process was adopted for the synthesis of borate-based bioactive glass, as reported earlier by our group, followed by the fabrication of nanofibers by electrospinning process while using polyvinyl butyral (PVB) (BUTVAR® B-72, Merk, Mumbai, India) [29 (link)] (Figure 1 ). Briefly, glass sol was prepared by adding 0.680 g Polyethylene oxide (PEO) Sigma Aldrich, Bangalore, India), 6 mL of tetraethyl orthosilicate (TEOS)( Sigma Aldrich, Bangalore, India), 3 mL of tributyl borate (TBB) (Sigma Aldrich, Bangalore, India), and 6 g of calcium nitrate tetrahydrate (CaNO3·4H2O)( Sigma Aldrich, Bangalore, India) sequentially into 1 N HCl solution. The glass sol was then mixed with a solution of PVB at a ratio of 3:2 to adjust its rheological properties for electrospinning. Following electrospinning, the glass nanofibers were subjected to heat treatment at 700 °C for 1 h at a heating rate of 2 °C/min.
Polyethylene oxide peo
Manufactured by Merck Group
Sourced in United States, Germany, United Kingdom, France, Ireland
Polyethylene oxide (PEO) is a water-soluble, non-ionic polymer that is commonly used as a laboratory equipment product. It serves as a viscosity modifier, dispersant, and lubricant in various applications.
Automatically generated - may contain errors
Lab products found in correlation
Polycaprolactone pcl, by Merck Group (3 mentions)
Acetic acid, by Merck Group (3 mentions)
Polyethylene glycol peg, by Merck Group (3 mentions)
Chloroform, by Merck Group (3 mentions)
Fetal bovine serum (fbs), by Thermo Fisher Scientific (3 mentions)
Trypsin edta, by Thermo Fisher Scientific (3 mentions)
1 3 5 tris 1 phenyl 1h benzimidazol 2 yl benzene tpbi, by Xi'an Yuri Solar Co. (3 mentions)
Ammonium hydroxide, by Merck Group (2 mentions)
Sodium hydroxide (naoh), by Merck Group (2 mentions)
Polystyrene ps, by Merck Group (2 mentions)
Polyvinylpyrrolidone pvp, by Merck Group (2 mentions)
Cellulose acetate, by Merck Group (2 mentions)
Chitosan, by Merck Group (2 mentions)
N n dimethylformamide (dmf), by Merck Group (2 mentions)
K2co3, by Merck Group (2 mentions)
Mylar foil, by DuPont (2 mentions)
Lithium bis trifluoromethanesulfonyl imide litfsi, by Solvay (2 mentions)
Usp grade caffeine, by Avantor (2 mentions)
Bovine serum albumin (bsa), by Merck Group (2 mentions)
Calcium nitrate tetrahydrate cano3 4h2o, by Merck Group (1 mentions)
68 protocols using polyethylene oxide peo
1
Fabrication of Borate-Based Bioactive Glass Nanofibers
2
Formulation and Characterization of β-Lapachone
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β-Lapachone was supplied by the Mazence Pharmaceutical Company (Suwon, Korea). Crospovidone (Kollidon CL), poloxamer 407 (Lutrol F 127), and poloxamer 188 (Lutrol F 68) were obtained from BASF (Ludwigshafen, Germany). Poly(acrylic acid) (Carbopol 940) was procured from Lubrizol Advanced Materials Inc. (Cleveland, OH, USA). Xanthan gum, hydroxypropyl methylcellulose (HPMC), sucrose, and poly(ethylene oxide) (PEO) were purchased from the Sigma-Aldrich Company (St. Louis, MO, USA). Polyethylene glycol (PEG) 4000 was obtained from Daejung Chemicals and Metal Co., Ltd. (Siheung, Korea). Polydextrose was purchased from Santa Cruz Biotechnology Inc. (Dallas, TX, USA). Spray dried lactose was kindly provided by Whanin Pharm Co., Ltd. (Suwon, Korea). All other materials used were of pharmaceutical grade.
3
Waterborne Polyurethane-Urea Dispersion with TiO2 Nanoparticles
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The employed diisocyanate was diphenylmethane diisocyanate (MDI), kindly provided by Covestro (Darmstadt, Germany). A chain extender and internal emulsifier, 2,4-diamino-benzenesulfonic acid (DBSA), supplied by Sigma Aldrich (Japan) and neutralized with NaOH, was used [37 ]. The soft segment of the synthesized waterborne poly(urethane-urea) dispersion was formed by poly(ethylene oxide) (PEO) with a weight average molecular weight, Mw, of 1000 g mol−1, as indicated by Sigma Aldrich (St. Louis, MO, USA). In addition, the mixture of rutile and anatase TiO2 nanoparticles (particle size <150 nm) were also supplied by Sigma-Aldrich (Darmstadt, Switzerland). Table S1 in Supplementary Materials displays more details regarding the reagents.
4
Synthesis of Biopolymer-Silver Nanocomposite Scaffold
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The CS from crab shells (Poly-(1,4-β-D-glucopyranosamine, MW 110,000 with the degree of deacetylation 0.74) was purchased from Sigma-Aldrich (Munich, Germany). Polyethylene oxide (PEO), silver nitrate (≥99.0%), poloxamer (P123 with a molecular weight of around 5800 g/mol and nominal chemical formula: HO(CH2CH2O)20(CH2CH(CH3)O)70(CH2CH2O)20H, was used as a stabilizer of AgP and AgNP), sodium hydroxide, and ammonium hydroxide (28.0–30.0% NH3 basis) were purchased from Sigma-Aldrich. Aqueous acetic acid (≥99.7%) was purchased from POCH (Avantor Performance Materials Poland S.A, Gliwice, Poland). The biopolymer scaffold was prepared from a biopolymer solution according to the procedure presented in a previous paper [41 (link)]. All solutions were prepared with MilliQ standard water. All reagents were used without any further purification.
5
Fabrication of Electrospun Polymer Scaffolds
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Hydrophobic polymers including poly(lactic-co-glycolic acid) (PLGA, 50:50 lactic:glycolic acid, MW 30,000–60,000), poly(L-lactic acid) (PLLA, MW 50,000), and polycaprolactone (PCL, MW 80,000), and the hydrophilic polymer, polyethylene oxide (PEO, MW 100,000) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Tris-EDTA (TE) buffer (pH 8.0), phosphate buffered saline (PBS), and the organic solvents chloroform, dimethyl sulfoxide (DMSO), and hexafluoroisopropanol (HFIP) were also purchased from Sigma-Aldrich (St. Louis, MO, USA). All chemicals were used directly without further purification. One milliliter plastic syringes, petri dishes, and 20 mL scintillation vials were obtained from VWR. One milliliter glass syringes were purchased from Fisher Scientific. The electrospinner was provided courtesy of Dr. Stuart Williams at the Cardiovascular Innovative Institute, University of Louisville.
6
Berberine-Loaded Hydrogel Synthesis
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Berberine chloride (BBR), poly (ethylene glycol) diacrylate (PEGDA; mol wt. 700 Da), poly (ethylene oxide) (PEO; mol wt. 100,000 Da), diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (TPO), and sodium persulfate (SPS) were purchased from Sigma-Aldrich Chemical Co. St. Louis, MO, USA. All other reagents used were of analytical grade and obtained from HiMedia Laboratories Pvt. Ltd. Solvents used in HPLC were of chromatography grade and obtained from Merck Life Sciences Pvt. Ltd. Double-distilled water (DDW) was used throughout the study.
7
Polysulfone-Based Membrane Fabrication
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Polysulfone (Psf) was procured from Solvay Specialties India Pvt. Ltd, India. N-methyl-2-pyrrolidone (NMP, ≥99.5% purity) and polyvinyl pyrrolidone (PVP, K-30; molecular weight: 40 kDa) of AR grade were obtained from SRL Pvt. Ltd, India. The nanodiamond powder (ND, particle size <10 nm, assay ≥97%, MW: 12.01 g mol−1, density: 3.5 g mL−1) and polyethylene oxide (PEO, molecular weight: 100 kDa) were purchased from Sigma-Aldrich.
8
Polymer Solutions for Diverse Applications
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Polystyrene (PS) (weight average MW 350,000 g/mol), polyvinylpyrrolidone (PVP) (MW 1,300,000 g/mol), polyvinyl alcohol (PVA) (MW 205,000 g/mol, degree of hydrolysis 86.7%–88.7%), and polyethylene oxide (PEO) (MW 2,000,000 g/mol) were received from Sigma Aldrich (St. Louis, MO, USA). Toluene (ACS reagent grade), acetone (ACS reagent grade), and ethanol (Molecular Biology Grade) were received from Fisher Scientific (St. Louis, MO, USA). All chemicals were used as received.
9
Synthesis and Characterization of Biomaterial Composites
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Poly(ethylene oxide) (PEO; MW = 2 kDa), glycol chitosan (GC, MW ∼ 250 kDa), and sodium alginate (MW ∼ 150 kDa, M/G ratio ∼ 1.6) were purchased from Sigma-Aldrich (St. Louis, United States). Benzaldehyde-capped poly(ethylene oxide) (CHO-PEO-CHO) and silica nanoparticles (average diameter of 12 nm) were synthesized according to our previous reports (Ding et al., 2010 (link); Zhu et al., 2016 (link), 2017 (link)). BG particles were synthesized according to our previous work (Ji et al., 2017 (link)). RPMI1640 medium, pancreatic enzymes, fetal bovine serum (FBS), penicillin-streptomycin solution, and phosphate-buffered saline (PBS) were purchased from Gibco (Grant Island, United States).
10
Gabapentin-Polyethylene Oxide Formulation
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Gabapentin was purchased from TCI Europe (Zwijndrecht, Belgium). Polyethylene oxide (PEO), a carrier polymer, with an average viscosity molecular weight of 200,000 (Mw) was purchased from Sigma-Aldrich Ltd., Old Brickyard, New Rd, Gillingham, UK. All other chemical reagents used were of analytical grade and used as supplied.
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