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59 protocols using divinylbenzene

1

Living Anionic Polymerization of Isoprene

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Isoprene (99%), sec-butyl lithium (1.4 M in cyclohexane), n-butyllithium (2.0 M in cyclohexane), and N,N,N,N-tetramethylenediamine (99.5%) were obtained from Sigma-Aldrich. Dried methanol (99.9%) and divinylbenzene (98%, mixture of isomers), were purchased from Merck (Germany). Butylated hydroxyToluene (BHT), 99% was obtained from Fischer Scientific. Toluene (HPLC grade), benzene (99.9%), Isoprene and divinylbenzene were dried and degassed by several freeze–pump–thaw cycles over calcium hydride (CaH2) (Aldrich), on a vacuum line. A customised reactor, “Christmas tree” reaction vessel was used to carry out all the syntheses. The reaction vessel was washed thoroughly with solvents and evacuated overnight followed by rinsing with living poly(styryl)lithium solution to react with and remove any trace amount of impurities remaining in the vessel. The apparatus was further evacuated before the polymerisation.
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2

Synthesis of Polymeric Adsorbents

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Divinylbenzene (containing 65 wt% of DVB isomers and ~35 wt% of ethylstyrene) and EGDMA (97.5%) from Merck (Darmstadt, Germany), NVP (99%) from Sigma-Aldrich (Schnelldorf, Germany) and ST (98.5%) from POCh (Poland) were washed with 5% aqueous sodium hydroxide to remove inhibitors. Poly(vinyl alcohol) (PVA) and 2,2′-azoisobutyronitrile (AIBN) purchased from Fluka (Buchs, Switzerland) were used without purification. Toluene, benzene, chlorobenzene, acetone, methanol, butan-1-ol, pentan-2-one, and sodium hydroxide (reagent grade) were obtained from POCh (Poland). BMB [53 (link)], BMPS [54 (link)] and BMPM [55 (link)] were obtained from our laboratory according to the procedures described earlier.
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3

Synthesis and Characterization of Polymers

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All chemicals were of pure analytical grade. Polystyrene (Mw = 192,000), tetrahydrofuran, (98.0%), N,N-dimethylformamide (99.0%), acetone (99.8%), methanol, pyridine, Nylon 6, cellulose acetate, polysulfone, polyethylene terephthalate, 4-vinylbenzylchloride, styrene monomer, acryl amide, methacrylic acid, p-sodium styrene sulfonate, and divinyl benzene were purchased from Merck Chemicals (Wadesville, South Africa) and Sigma Aldrich (Cape Town, South Africa). The hydroxypyrene standard was obtained from Sigma-Aldrich (Saint Louis, MO, USA). All glassware were washed and rinsed thoroughly in ultra-pure water generated from a MilliQ system (Billerica, MA, USA).
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4

Diverse Organic Extraction and Characterization

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65% divinylbenzene (DVB), methanol (MeOH), 2-chlorophenol (2-ChP), 2,4-dichlorophenol (2,4-DChP), and 2,4,6-trichlorophenol (2,4,6-TChP), 1,4-dioxane and 2-hydroxybenzoic acid (salicylic acid), acetylsalicylic acid (aspirin), (S)-(+)-2-(4-Isobutylphenyl)propionic acid (ibuprofen), 4-acetamidophenol (paracetamol), ampicillin, bromine, and starch were purchased from Merck (Darmstadt, Germany). Hexane, acetone, toluene, and phenol (P), poly(vinyl alcohol) (PVAL), 99.8% acetic acid, iodine, NaOH, KI, Na2S2O3, were from POCh (Gliwice, Poland). Linseed oil (Lo) and rapeseed oil (Ro), both cooking grade, and argan oil (Ao) cosmetical grade 100% (cold pressed), were purchased from local suppliers. 97% (R)-(+)limonene (L) was from Aldrich (Steinheim, Germany). 96% cis/trans citral (C), 97% (1R)-(+)-alfa-pinene (P) was from SAFC, and 98% α,α’-Azoiso-bis-butyronitrile (AIBN) was from Fluka (Busch, Switzerland).
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5

Synthesis of Crosslinked Polymer Particles

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Sodium molybdate (Na2MoO4·2H2O), acrylonitrile (AN), divinylbenzene (DVB), 1,2- dichlorobenzene, benzoyl peroxide (BPO), potassium persulfate (K2S2O8, KPS), and calcium chloride dihydrate (CaCl2⋅2H2O) were purchased from Merck Co. (Darmstadt, Germany). Polyglycerol polyricinoleate (PGPR4150, Palsgaard, Denmark) was kindly given by PishgamanPakhsh Sedigh Co.
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6

Adsorption of Basic Dyes on Polymer Adsorbents

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All chemicals and solvents mentioned above were used as received, without further purification. Cyclohexanone, PCl5, bromine, KOH, benzyl alcohol and ethanol were from Avantor Performance Materials Poland S.A. (Gliwice, Poland). Palladium acetate, trimethylamine, tris(o-tollyl)phosphine and bis(2-ethylhexyl)sulfosuccinate sodium salt were purchased from Sigma-Aldrich (Germany). Divinylbenzene (DVB) and α,α′-azoiso-bis-butyronitrile (AIBN) were obtained from Merck (Germany) and Fluka (Switzerland), respectively.
Two basic dyes of the oxazine and diphenylmethane class, namely C.I. Basic Blue 3 (7-(diethylamino)-N,N-diethyl-3H-phenoxazin-3-iminium chloride) and C.I. Basic Yellow 2 (4,4′-carbonimidoylbis(N,N-dimethylaniline) hydrochloride), were used as adsorbates. The structure and characteristics of the dyes are presented in Figure 3.
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7

Functionalized Polymeric Nanoparticles Synthesis

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Styrene, divinylbenzene (DVB), dimethyl sulfoxide (DMSO), (3-aminopropyl)triethoxysilane (APTES), trimethoxyvinylsilane (TMVS) and D-glucose monohydrate were purchased from Merck KGaA, toluene, 2,2 0 -azoisobutyronitrile (AIBN), 11-mercapto-1-undecanol and yeast extract from Sigma Aldrich, proteose peptone and ethanol from VWR Chemicals, sodium dodecyl sulfate (SDS) from Fluka Chemie AG, disuccinimidyl suberate (DSS) from Acros Organics, acetic acid from Carl Roth GmbH + Co. KG and NaCl from AppliChem GmbH. All chemicals were used as received.
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8

Synthesis of Polymeric Monoliths

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Acetonitrile (ACN, LC-MS grade), 2,2 -azobisisobutyronitrile (AIBN, 98%), 1-decanol (99%), methanol (chromasolv, 99.5%), potassium iodide (KI, 99%), tetrahydrofuran (THF, anhydrous, without stabilizer, 99.9%), toluene (anhydrous, 99.8%), 3-(trimethoxysilyl)propyl methacrylate (98%) and uracil (99%) were purchased from Sigma-Aldrich (Bornem, Belgium). Styrene (S, 99.5%), divinylbenzene (DVB, technical, 65% mixture of m-DVB and p-DVB, 35% ethylvinylbenzene), and sodium hydroxide pellets were purchased from Merck (Hohenbrunn, Germany). Hydrochloric acid (30 vol %) was purchased from Fluka (Buchs, Germany). S and DVB were purified over activated alumina columns to remove inhibitor, all other products were used as received. Water was purified using a MilliQ system (Merck Millipore, Darmstadt, Germany). Poly(imide)-coated fused-silica tubing (200 m id × 360 m o.d.) was purchased from Polymicro Technologies (Molex, Lisle, USA).
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9

Synthesis of Hydrophobic Polymer Microspheres

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The monomer, 2,2,2-trifluoroethyl methacrylate (TFEMA, hydrophobic monomer), was purchased from Harbin Xeogia Fluorine-Silicon Chemical CO., Ltd. (Harbin, China), the cross-linker, divinylbenzene (DVB, technical grade, 80%), azobisisobutryonitrile (AIBN), and calcium chloride dihydrate (CaCl2·2H2O) were purchased from Sigma-Aldrich (USA). Span 80 (sorbitanmonooleate, HLB (hydrophilic–lipophilic balance) = 4.3), Span 85 (sorbitantrioleate, HLB = 2.1), Span 60 (sorbitan stearate, HLB = 4.7) were bought from Sigma-Aldrich (USA). Tween-80 (polyoxyethylene sorbitanmonooleate, HLB = 15.0), cationic surfactant CTAB (HLB = 15.8), anionic surfactant sodium dodecyl sulfate (SDS, HLB = 40), and Sudan III dyes were provided by Sinopharm Chemical Reagent Co., Ltd (Shanghai, China). Non-ionic surfactant Hypermer B246 (HLB = 4.9), a block copolymer of polyhydroxystearic acid and polyethylene glycol was supplied by Croda (USA). Toluene (>97%) was supplied by Tianjin Fuyu Fine Chemical Company (China).
The 2,2,2-trifluoroethyl methacrylate (TFEMA) and divinylbenzene (DVB) were filtered over basic alumina columns to remove the inhibitor and any other acidic impurities prior to use. azobisisobutryonitrile (AIBN, ≥98%) was recrystallized from methanol and dried under reduced pressure for 12 h. Deionized water was used in all experiments. All other materials were used as received.
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10

Acid Dyes for Textile Dyeing

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Three textile acid dyes such as C.I. Acid Red 18, C.I. Acid Violet 1 and C.I. Acid Green 16 were purchased from Boruta-Zachem (Zgierz, Poland). Their physicochemical properties are presented in Figure 10. Acid dyes, named for their application under acid conditions, are reasonably easy to apply, have a wide range of colors and, depending on dye selection, can have good color fastness properties. They are widely applied for wool, silk and nylon dyeing.
Glycidyl methacrylate (GMA), polyvinyl alcohol (APV, MW = 72,000, 98% degree of hydrolysis), decan-1-ol and triethylenetetramine (TETA) were purchased from Fluka AG (Munich, Germany).
α,α’-azoisobisbutyronitrile and divinylbenzene (62.2% of 1,4-divinylbenzene, 0.2% of 1,2-divinylbenzene and ethylvinylbenzene) were obtained from Sigma-Aldrich (Darmstadt, Germany). Acetone, toluene, methanol, acetic acid, sodium dodecyl sulfate, sodium sulfate, sodium chloride, sodium hydroxide and hydrochloric acid were obtained from Avantor Performance Materials Poland S.A. (Lublin, Poland). Purified water came from Millipore (UMCS, Lublin, Poland).
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