Zobrazeno 1 - 10
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pro vyhledávání: '"R. D. Sedgwick"'
Autor:
R. D. Sedgwick
Publikováno v:
Journal of Polymer Science: Polymer Letters Edition. 28:183-184
Autor:
R. D. Sedgwick, D. M. Hindenlang
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 24:1721-1724
Publikováno v:
International Journal of Mass Spectrometry and Ion Physics. 46:447-450
Positive and negative ion Fast Atom Bombardment mass spectra have been obtained for involatile mono- and disazo dyestuffs, containing up to five sulphonate and phosphonate groups. The spectra are discussed with special reference to the ions formed by
Autor:
R. D. Sedgwick, A. K. Lee
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 16:997-1003
Molecular-weight distributions derived from mass spectrometric studies of some alkylene oxide copolymers have been used to calculate rate constant ratios for the first eight steps in the polymerization process. Results suggest that there is a signifi
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 19:2007-2015
The degradation of low-density polyethylene in the presence of water as the degradative agent was studied at a temperature of 450°C and a pressure greater than 160 atm. The experimental work was conducted in an autoclave of 333-mL capacity. The prod
Autor:
H. G. Ramjit, R. D. Sedgwick
Publikováno v:
Journal of Macromolecular Science: Part A - Chemistry. 10:815-824
The kinetics of ester-ester exchange reactions between poly(ethy1ene adipate) and poly(trimethy1ene adipate) have been studied by mass spectrometric techniques. Reactions were carried out in the absence of catalyst and solvent. Rate constants for the
Autor:
R. D. Sedgwick, C. E. Forbes, Shaul M. Aharoni, F. Mares, Willis B. Hammond, K. P. O'Brien, D. M. Hindenlang
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 24:1281-1296
When melt-extruded in the presence of triphenylphosphite (TPP), the molecular weight of polyesters such as poly(ethylene terephthalate) (PET) increases with time. Analysis of the PET chain end groups and model studies of high-temperature reactions in
Autor:
G V Garner, Andrew N. Tyler, Robert S. Bordoli, D B Gordon, L W Tetler, R. D. Sedgwick, M Barber
Publikováno v:
Biochemical Journal. 197:401-404
The positive- and negative-ion mass spectra of [methionine]enkephalin and [leucine]enkephalin have been obtained by using a fast-atom-bombardment source described previously by Barber, Bordoli, Sedgwick & Tyler [(1981) J. Chem. Soc. Chem. Commun., in
Autor:
R. D. Sedgwick, R. A. Adams
Publikováno v:
Organic Mass Spectrometry. 9:884-887
The results of the applications of computer learning techniques to decision making in the evaluation of mass spectral data are used to propose a model in which molecular complexity is related to binary decision prediction probability. This model is t
Publikováno v:
Inorganica Chimica Acta. 27:185-189
The mass spectra of bis(phenylthio)methane, 1,2-bis(phenylthio)ethane, 1,3-bis(phenylthio)propane, 1,6-bis(phenylthio)hexane, 1,8-bit(phenylthio)octane, cis -1,2-bis(phenylthio)ethylene, o-phenylenebis(phenylthioether), some methyl-substituted analog