Zobrazeno 1 - 10 of 67 pro vyhledávání: '"W. F. Maddams"'
1
A study of wet PVC gels by raman spectroscopy
Autor: R. S. Jackson, D.I. Bower, W. F. Maddams
Publikováno v: Journal of Polymer Science Part B: Polymer Physics. 28:837-859
Raman spectroscopy has been used to study PVC gels made in cyclohexanone in the wet state at concentrations from 21 to 93% by weight of PVC. Parallel and perpendicular spectra were obtained in the C-Cl stretching region, and after subtraction of the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6f772f260e7ddf93e07e42b233a342c
https://doi.org/10.1002/polb.1990.090280604
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2
Ageing in wet PVC gels studied by gel-sol transition temperature and Raman spectroscopy
Autor: R. S. Jackson, W. F. Maddams, D.I. Bower
Publikováno v: Polymer. 31:857-860
The ageing of PVC gels made with cyclohexanone has been studied for times up to two weeks by measurement of gel-sol transition temperature and for times up to two years by Raman spectroscopy. The results suggest that the major factor in the ageing of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f521c02c4431c22820441f120d73d79
https://doi.org/10.1016/0032-3861(90)90047-3
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8
Conformations of some αβ-unsaturated carbonyl compounds. Part V. Assignments of Raman and infrared spectra of methyl and [2H3]methyl acrylates and trans-crotonates
Autor: W. F. Maddams, William O. George, William C. Harris, D. V. Hassid
Publikováno v: J. Chem. Soc., Perkin Trans. 2. :392-396
Raman and i.r. spectra of methyl and [2H3]methyl acrylates and trans-crotonates in the liquid state at room temperature and as frozen solids are presented together with vibrational assignments for particular conformers. Intensities of selected Raman
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46d43111ebbf56cd6df4b19935328bd3
https://doi.org/10.1039/p29750000392
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9
X-ray diffraction orientation studies on blown polyethylene films. II. Measurements on films from a commercial blowing unit
Autor: J. E. Preedy, W. F. Maddams
Publikováno v: Journal of Applied Polymer Science. 22:2739-2749
X-Ray diffraction pole figure measurements have been made on a series of films, blown under various conditions from three high-density polyethylenes. The results are interpreted in terms of two distinct types of orientation. The first, and probably t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b802e5e14bd7c05ab8d8b9ead22a252e
https://doi.org/10.1002/app.1978.070221002
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10
Aggregation and association of polar molecules in low temperature matrices and in the gaseous phase
Autor: E. N. Lewis, P.K. Hirani, D. A. Williams, W. F. Maddams, W. O. George
Publikováno v: Journal of Molecular Structure. 141:227-236
In the compounds: comparisons are made between the infrared spectra in the gas and matrix isolated phases. The alkene out-of-plane vibrations are sensitive to rotation, aggregation and conformational change. The twist and wag modes show consistent di
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af9d4f75a83b7f523c42c91eeb218a94
https://doi.org/10.1016/0022-2860(86)80327-1
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