ELECTRON MICROSCOPY AND SMALL ANGLE X-RAY STUDIES OF AMORPHOUS POLYMERS.

Donald R Uhlmann, A. L. Renninger

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

General considerations of heterogeneity and nodular structure of amorphous polymers and their studies by using small angle x-ray scattering (SAXS) techniques are followed by presentation of results of an investigation in which polycarbonate polymer was tested. The investigation was carried out using a Bonse-Hart small angle scattering system. The measured intensities were corrected for absorption and residual background; and sufficiently long counting times were used so that the scattering at any angle attributable to the polycarbonate was accurate to better than 10 pct. THe data, suitably scaled, are in substantial agreement with those of W. Lin and E. J. Kramer. Results obtained are analyzed by using mathematical techniques. It is suggested that the SAXS from glassy polycarbonate, and other glassy polymers as well, be taken as representative of a generally random structure, with a small concentration (in the range of 0. 04 volume pct. or less) of heterogeneities such as crystallites, second-phase particles or surface defects. It is further suggested that the nodular structures seen in glassy polymers be associated with surface effects rather than structural features of the bulk material.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Pages28-34
Number of pages7
Volume15
Edition2
StatePublished - 1974
Externally publishedYes

Fingerprint

polycarbonate
Electron microscopy
Polymers
Polycarbonates
Scattering
X rays
Surface defects
Crystallites

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Uhlmann, D. R., & Renninger, A. L. (1974). ELECTRON MICROSCOPY AND SMALL ANGLE X-RAY STUDIES OF AMORPHOUS POLYMERS. In American Chemical Society, Polymer Preprints, Division of Polymer Chemistry (2 ed., Vol. 15, pp. 28-34)

ELECTRON MICROSCOPY AND SMALL ANGLE X-RAY STUDIES OF AMORPHOUS POLYMERS. / Uhlmann, Donald R; Renninger, A. L.

American Chemical Society, Polymer Preprints, Division of Polymer Chemistry. Vol. 15 2. ed. 1974. p. 28-34.

Research output: Chapter in Book/Report/Conference proceedingChapter

Uhlmann, DR & Renninger, AL 1974, ELECTRON MICROSCOPY AND SMALL ANGLE X-RAY STUDIES OF AMORPHOUS POLYMERS. in American Chemical Society, Polymer Preprints, Division of Polymer Chemistry. 2 edn, vol. 15, pp. 28-34.
Uhlmann DR, Renninger AL. ELECTRON MICROSCOPY AND SMALL ANGLE X-RAY STUDIES OF AMORPHOUS POLYMERS. In American Chemical Society, Polymer Preprints, Division of Polymer Chemistry. 2 ed. Vol. 15. 1974. p. 28-34
Uhlmann, Donald R ; Renninger, A. L. / ELECTRON MICROSCOPY AND SMALL ANGLE X-RAY STUDIES OF AMORPHOUS POLYMERS. American Chemical Society, Polymer Preprints, Division of Polymer Chemistry. Vol. 15 2. ed. 1974. pp. 28-34
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