ON THE STRUCTURE OF GLASSY POLYMERS - 4. SMALL-ANGLE X-RAY SCATTERING FROM RIGID POLYVINYL CHLORIDE.

R. S. Straff, Donald R Uhlmann

Research output: Chapter in Book/Report/Conference proceedingChapter

24 Citations (Scopus)

Abstract

In the reported experiments, the small-angle x-ray scattering (SAXS) from quenched and annealed rigid PVC has been measured using a Bonse-Hart system. The scattering from annealed (6 days at75 degree C) and unannealed PVC was identical within experimental error, varying with scattering angle in a manner similar to the SAXS from other amorphous polymers. The intensity decreases rapidly with increasing scattering angle over the ranges from 20 sec to 20 min. The angular variation of intensity is well described by the scattering from heterogeneities of various sizes and concentrations superimposed on the scattering from thermal density fluctuations. It is pointed out that the results obtained are inconsistent with the presence of nodular features as representative of the bulk polymer. Rather, it is suggested that they are associated with surface effects. It is further suggested that previously indicated volume fractions of crystallinity in rigid PVC are incorrect, and that the model of a three-dimensional network of crystallites should be re-examined.

Original languageEnglish (US)
Title of host publicationJ Polym Sci Part A-2 Polym Phys
Pages353-365
Number of pages13
Volume14
Edition2
StatePublished - Feb 1976
Externally publishedYes

Fingerprint

X ray scattering
Polyvinyl chlorides
Scattering
Polymers
X rays
Crystallites
Volume fraction
Experiments

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Straff, R. S., & Uhlmann, D. R. (1976). ON THE STRUCTURE OF GLASSY POLYMERS - 4. SMALL-ANGLE X-RAY SCATTERING FROM RIGID POLYVINYL CHLORIDE. In J Polym Sci Part A-2 Polym Phys (2 ed., Vol. 14, pp. 353-365)

ON THE STRUCTURE OF GLASSY POLYMERS - 4. SMALL-ANGLE X-RAY SCATTERING FROM RIGID POLYVINYL CHLORIDE. / Straff, R. S.; Uhlmann, Donald R.

J Polym Sci Part A-2 Polym Phys. Vol. 14 2. ed. 1976. p. 353-365.

Research output: Chapter in Book/Report/Conference proceedingChapter

Straff, RS & Uhlmann, DR 1976, ON THE STRUCTURE OF GLASSY POLYMERS - 4. SMALL-ANGLE X-RAY SCATTERING FROM RIGID POLYVINYL CHLORIDE. in J Polym Sci Part A-2 Polym Phys. 2 edn, vol. 14, pp. 353-365.
Straff RS, Uhlmann DR. ON THE STRUCTURE OF GLASSY POLYMERS - 4. SMALL-ANGLE X-RAY SCATTERING FROM RIGID POLYVINYL CHLORIDE. In J Polym Sci Part A-2 Polym Phys. 2 ed. Vol. 14. 1976. p. 353-365
Straff, R. S. ; Uhlmann, Donald R. / ON THE STRUCTURE OF GLASSY POLYMERS - 4. SMALL-ANGLE X-RAY SCATTERING FROM RIGID POLYVINYL CHLORIDE. J Polym Sci Part A-2 Polym Phys. Vol. 14 2. ed. 1976. pp. 353-365
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