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Light-scattering characterization of polyblends in the presence of multiple-scattering conditions

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1002/pen.760272106
AuthorSearch for: 1; Search for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada
FormatText, Article
Abstract
A novel approach is described for the noncontact evaluation of structural morphology in polyblends by light scattering. Optical methods are attractive for the on‐line characterization of translucent materials because they are noninvasive, rapid, and applicable to high temperature materials. One limitation of conventional light‐scattering techniques is their requirement for relatively thin samples in order to avoid multiple‐scattering effects that smear out the details of the light diffraction pattern. The approach described in this paper is meant to circumvent this limitation by resorting to turbidimetric measurements, which provide useful information on the average size, shape, concentration, and orientation of the dispersed phase particles even in the presence of multiple scattering. The sample thickness is no longer restricted, and methods are described by which the near‐surface volume of infinitely thick parts may be inspected with access to a single side of the material. Results are presented for polypropylene‐polycarbonate (PP/PC) samples of different thicknesses and microstructural morphology, including fibrillar‐type oriented structures.
Publication date
PublisherWiley / Society of Plastics Engineers
In
  • Polymer Engineering and Science 27, no. 21: 1601–1610.
LanguageEnglish
Peer reviewedYes
NRC numberCNRC 26747
NRC-IGM86-102-456
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Record identifierea05f68e-c7b3-486f-943f-77a7eafa5566
Record created2019-11-23
Record modified2020-03-17
Date modified: