CRYSTALLIZATION OF POLYETHYLENE AT HIGH PRESSURE: A KINETIC VIEW.

P. D. Calvert, Donald R Uhlmann

Research output: Chapter in Book/Report/Conference proceedingChapter

20 Citations (Scopus)

Abstract

A model for the crystallization kinetics of polymers is outlined and is used to interpret observations of the crystallization of PE at high pressures. This model introduces a distinction between sigma //e the lamellar surface energy which controls the lamellar thickness, and sigma //e', the surface nucleus surface energy which controls the growth rate. Differential scanning calorimetry and electron microscopy data for several polyethylenes crystallized at pressures of up to 8 kb are preseinted. It is found that sigma //e increases markedly with pressure leading to the formation of very thick crystals at high pressures. Fractionation effects and the differences in behavior between different polyethylenes are also discussed.

Original languageEnglish (US)
Title of host publicationJ Polym Sci Part A-2 Polym Phys
Pages1811-1836
Number of pages26
Volume10
Edition9
StatePublished - Sep 1972
Externally publishedYes

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Polyethylenes
Crystallization
Interfacial energy
Power control
Crystallization kinetics
Fractionation
Electron microscopy
Differential scanning calorimetry
Crystals
Polymers

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Calvert, P. D., & Uhlmann, D. R. (1972). CRYSTALLIZATION OF POLYETHYLENE AT HIGH PRESSURE: A KINETIC VIEW. In J Polym Sci Part A-2 Polym Phys (9 ed., Vol. 10, pp. 1811-1836)

CRYSTALLIZATION OF POLYETHYLENE AT HIGH PRESSURE : A KINETIC VIEW. / Calvert, P. D.; Uhlmann, Donald R.

J Polym Sci Part A-2 Polym Phys. Vol. 10 9. ed. 1972. p. 1811-1836.

Research output: Chapter in Book/Report/Conference proceedingChapter

Calvert, PD & Uhlmann, DR 1972, CRYSTALLIZATION OF POLYETHYLENE AT HIGH PRESSURE: A KINETIC VIEW. in J Polym Sci Part A-2 Polym Phys. 9 edn, vol. 10, pp. 1811-1836.
Calvert PD, Uhlmann DR. CRYSTALLIZATION OF POLYETHYLENE AT HIGH PRESSURE: A KINETIC VIEW. In J Polym Sci Part A-2 Polym Phys. 9 ed. Vol. 10. 1972. p. 1811-1836
Calvert, P. D. ; Uhlmann, Donald R. / CRYSTALLIZATION OF POLYETHYLENE AT HIGH PRESSURE : A KINETIC VIEW. J Polym Sci Part A-2 Polym Phys. Vol. 10 9. ed. 1972. pp. 1811-1836
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