Direct Titration of Epoxy Compounds and Aziridines.

Jay, R.

doi:10.1021/ac60209a037

Cited by 264 publications

(78 citation statements)

References 2 publications

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“…The concentration of epichlorohydrin was determined by dissolving similar samples in 10 ml of chloroform. 10 cm 3 of 25 wt% tetraethylammonium bromide solution in glacial acetic acid was then added and the solution titrated with 0.1 M HClO 4 solution in glacial acetic acid in the presence of crystal violet as indicator [15].…”

Section: General Procedures For the Kinetics Measurementsmentioning

confidence: 99%

The solvent effects in the reactions of carboxylic acids with oxiranes. 1. Kinetics of the reaction of acetic acid with epichlorohydrin in butan-1-ol

Bukowski

2000

Int. J. Chem. Kinet.

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Kinetics of the reaction of acetic acid with epichlorohydrin in the presence of chromium(III) acetate in butan-1-ol solution have been studied. The partial reaction orders with respect to reagents were found. The reactions were of first-order with respect to both epichlorohydrin and catalyst and zeroth order with respect to acetic acid. A kinetic model for the overall process has been proposed. The reaction constants have been calculated along with the activation parameters. The effect of dilution on the rate of addition is discussed. In the equimolar mixture of acetic acid and epichlorohydrin the apparent rate constant of the addition k 1 initially decreases to increase again at the concentration of butan-1-ol exceeding 3 M.

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Section: General Procedures For the Kinetics Measurementsmentioning

confidence: 99%

The solvent effects in the reactions of carboxylic acids with oxiranes. 1. Kinetics of the reaction of acetic acid with epichlorohydrin in butan-1-ol

Bukowski

2000

Int. J. Chem. Kinet.

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“…3 Epoxide group determination was made by HBr addition to the oxirane ring, HBr being generated by titration of HCIO, to a solution of tetraethylammonium bromide. 6 The poly(ethy1ene imine) used was Polymin SN from BASF (Germany). The 24-hole plates were from Nunc (Denmark).…”

Section: Methodsmentioning

confidence: 99%

Protein immobilization to polystyrene via long poly(ethylene lycol) chains

Bergström¹,

Holmberg²

1991

Biotech & Bioengineering

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Human albumin has been attached to 24-hole polystyrene plates via branched poly(ethy1ene glycol) (PEG) spacer arms. A tetraepoxide of PEG of molecular weight (1.4-1.5) x lo4 g/mol was reacted with the protein in solution allowing approximately one-third of the oxirane rings to react. The protein conjugate was then coupled to the long, cationic polymer poly(ethy1ene imine) (PEI), and the protein-PEG-PEI adduct was subsequently adsorbed to preoxidized polystyrene. The amount of albumin bound was almost as high as the amount obtained by simple adsorption to unmodified polystyrene. Since the protein is linked to the surface via long, hydrophilic and noncharged chains, interactions between the biomolecule and the surface is minimized.

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“…26,27 The existence of the epoxy group on the diamond surface was further confirmed by the HClO 4 /(C 2 H 5 ) 4 N þ Br À titration system using crystal violet as an indicator. 28 The epoxide groups on the surface of ED were quantitative titrated with the concentration of 7.8Â 10 À3 mmol/g.…”

Section: Modification Of Diamond Surfacementioning

confidence: 99%

Coating films prepared by photoreactions of the surface‐modified diamond powder and PET film with a binder agent

Hsu

Lin

et al. 2010

J of Applied Polymer Sci

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ABSTRACT:The surface-modified diamond and PET film underwent photopolymerization rapidly with a binder agent to afford coating films of interpenetrating network (IPN) structure. The coating films thus formed exhibit higher tensile strength, thermal stability, and adhesion strength to the PET film. The inert surfaces of pristine diamond (PD) and PET film were modified by different chemicals and procedures to introduce epoxide and methacryloyl groups, respectively, on their surfaces. A coating agent consisting of an epoxide group containing modified diamond (called ED), a binder agent, and photoinitiators was prepared. After applying the coating agent to the substrate (a glass plate or a methacryloyl group containing PET film, MMA-PET) and degassing under reduced pressure, the thin film of the coating agent was exposed to UV light (k max ; 365 nm) at room temperature to yield a coating film of IPN-structure. The tensile strength and thermal properties of the ED-containing free coating film (called free film) increased with the amount of ED embedded, whereas the strength of the PD-containing free film decreased with the amount of PD embedded. The adhesion strength of the coating film on the MMA-PET improved significantly by the free radical polymerization of the methacryloyl groups on the MMA-PET and the acrylate resin in the binder agent. The surface photoreactions of ED and MMA-PET with the binder agent were confirmed by modeling.

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Direct Titration of Epoxy Compounds and Aziridines.

Abstract: Sir: The determination of the oxirane ring in organic compounds has generallyinvolved reaction with excess hydrochloric acid in a variety of solvents.

Cited by 264 publications

References 2 publications

The solvent effects in the reactions of carboxylic acids with oxiranes. 1. Kinetics of the reaction of acetic acid with epichlorohydrin in butan-1-ol

The solvent effects in the reactions of carboxylic acids with oxiranes. 1. Kinetics of the reaction of acetic acid with epichlorohydrin in butan-1-ol

Protein immobilization to polystyrene via long poly(ethylene lycol) chains

Coating films prepared by photoreactions of the surface‐modified diamond powder and PET film with a binder agent

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