W
William F. Maddams
Researcher at BP
Publications - 35
Citations - 872
William F. Maddams is an academic researcher from BP. The author has contributed to research in topics: Raman spectroscopy & Polyvinyl chloride. The author has an hindex of 16, co-authored 35 publications receiving 845 citations.
Papers
More filters
Journal ArticleDOI
The Scope and Limitations of Curve Fitting
TL;DR: In this paper, a review of the various factors involved in curve fitting of vibrational band systems is presented, with particular reference to vibrational bands, and other types of overlapping band systems encountered in analytical work are considered in less detail.
Journal ArticleDOI
Raman Spectrum of β-Carotene Using Laser Lines from Green (514.5 nm) to Near-Infrared (1064 nm): Implications for the Characterization of Conjugated Polyenes:
Stewart F. Parker,Susan M. Tavender,N. Michael Dixon,Henryk Herman,Kenneth P. J. Williams,William F. Maddams +5 more
TL;DR: In this article, the authors studied the Raman spectrum of beta-carotene using excitation wavelengths from visible (514.5 nm) to near-infrared (1064 nm).
Journal ArticleDOI
A study of the CCl stretching region of the Raman spectrum of PVC
TL;DR: In this article, the C-Cl stretching regions of the Raman spectra of a number of samples of PVC prepared by various methods which lead to differences in tacticity, conformational content and crystallinity have been studied.
Journal ArticleDOI
Molecular orientation in poly(vinyl chloride) studied by Raman spectroscopy and birefringence measurements
TL;DR: In this paper, the second and fourth-order Legendre polynomials in cosθ averaged over the distribution of orientations of the crystallites, where θ is the angle between the c axis of a typical crystallite and the draw direction.
Journal ArticleDOI
X-ray diffraction and infrared studies on annealed highly syndiotactic poly(vinyl chloride)
TL;DR: In this paper, X-ray diffraction scans and infrared absorption spectra for the C-CI stretching region were obtained for a highly syndiotactic poly(vinyl chloride) (PVC) sample made by the urea clathrate method.