Low-molecular-weight phenol-formaldehyde resol was first synthesized according to an established method47 . In a typical procedure, 0.61 g of phenol was melted at 40–42 °C and mixed with 0.13 of NaOH aqueous solution (20 wt%). After stirring for 10 min, 1.05 g of formaldehyde solution (37 wt%) was added dropwise. Upon further stirring at ∼75 °C for 1 h, the solution was cooled to room temperature and the pH value was adjusted to ∼7.0 with HCl solution. After removing water by vacuum evaporation below 50 °C, the resol was obtained. Then 0.1 g resol and 0.1 g triblock copolymer Pluronic F127 (Mw=12,600, PEO106-PPO70-PEO106, Aldrich.) were dispersed in 100 ml ethanol solution, respectively.
Peo106ppo70peo106
Manufactured by Merck Group
Sourced in United States
PEO106PPO70PEO106 is a polymer compound used in various laboratory applications. It serves as a core component in lab equipment and instrumentation. The compound's primary function is to provide specific technical properties required for the equipment's proper functioning.
Automatically generated - may contain errors
Lab products found in correlation
Pluronic f 127, by Merck Group (3 mentions)
Resorcinol, by Thermo Fisher Scientific (1 mentions)
Ni no3 2 6h2o, by Sinopharm (1 mentions)
Acetylacetone acac, by Sinopharm (1 mentions)
Formalin solution 37 wt, by Sinopharm (1 mentions)
Hydrochloric acid (hcl), by Sinopharm (1 mentions)
Ethanol, by Sinopharm (1 mentions)
Sodium hydroxide (naoh), by Sinopharm (1 mentions)
Phenol, by Sinopharm (1 mentions)
1 10 phenanthroline monohydrate phen, by Sinopharm (1 mentions)
Furfuryl alcohol, by Merck Group (1 mentions)
Nitric acid, by Merck Group (1 mentions)
Humic acid, by Merck Group (1 mentions)
6 protocols using peo106ppo70peo106
1
Synthesis of Phenol-Formaldehyde Resol with Pluronic F127
2
Synthesis of Activated Mesoporous Carbon
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Synthesis of aCNS 50 mL of deionized water and 20 mL of ethanol (> 99.9 %, J. T. Baker) were mixed uniformly at room temperature. 0.25 g of triblock copolymer, F-127 (PEO106-PPO70-PEO106, MW: 14600, Aldrich), was then added in the mixture and stirred for about 10 minutes. After F-127 dissolved completely, 0.5 g of ammonia solution (25 %, Choneye, Taiwan) was then added in the solution and stirred for about 30 minutes followed by adding 0.5 g of resorcinol (99%, Alfa Aesar) into the solution. Finally, 0.763 g of formaldehyde solution (37 wt%, Aldrich) was added gradually into the solution and stirred for 24 hours at room temperature. The solution was centrifuged with 14,900 rpm to separate the solid and liquid. The solid was dried at 100 o C in oven and heated at 350 o C for 2 hours in N 2 to remove the template. The carbonization process was conducted at 800 o C for 4 hours in N 2 followed by the activation process using CO 2 at 1000 °C for 45 minutes.
3
Triblock Polymer-Based Formaldehyde Sensing
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Triblock polymer (PEO106PPO70PEO106) provided by Sigma-Aldrich with an average Mw of 12 600. Formaldehyde (37 wt%), phenol, 4-hydroxyphenylboronic acid were obtained from Aladdin Industrial Corporation. All chemicals were used without further purification.
4
Synthesis of Metal Nanoparticles using Pluronic F127
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The poly(ethylene oxide)-block-poly(propylene oxide)-block-poly-(ethylene oxide) triblock copolymer Pluronic F127 (Mw = 12 600 g mol–1, PEO106PPO70PEO106) was purchased from Sigma-Aldrich. Ni(NO3)2·6H2O, Fe(NO3)3·9H2O, Co(NO3)2·6H2O, phenol, formalin solution (37 wt%), sodium hydroxide, hydrochloric acid, ethanol, 1,10-phenanthroline monohydrate (phen), acetylacetone (acac), and nitroarenes were purchased from Sinopharm Chemical Reagent Co., Ltd., which were of analytical grade and used as received without purification. Deionized water was used in all the experiments.
5
Pluronic F127 Copolymer Synthesis
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Triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) copolymer Pluronic F127 (Mw = 12 600, PEO106PPO70PEO106) was purchased from Sigma-Aldrich. Hexamethylenetetramine (HMT), l -lysine, resorcinol and 3-aminophenol were purchased from Aladdin. All chemicals were used as received without further purification. Deionized water was used in all experiments.
6
Photoactive Hybrid Nanocomposite Synthesis
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Triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) copolymer Pluronic F127 (MW =12,600, PEO106–PPO70PEO106), furfuryl alcohol (99%), humic acid (HA), and nitric acid (65%) were purchased from Sigma-Aldrich Co., St Louis, MO, USA. A mixture of 80% anatase and 20% rutile phases with an average particle size of 35 nm was also supplied by Sigma-Aldrich. All the reagents used were of analytical grade and were used as received. FTO glass (sheet resistance ruthenium <15 U cm−1) was provided by Pilkington Glass Co (Northwood, OH, USA).
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