Small-Angle Neutron Scattering Evaluation of the Temperature Dependence of Atactic Polypropylene and Poly(1-butene) Chain Dimensions in the Melt

A. Zirkel, V. Urban, D. Richter, L. J. Fetters*, J. S. Huang, R. Kampmann, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Small-angle neutron scattering was used to measure the influence of temperature on the radius of gyration in the melt of atactic polypropylene and poly(l-butene). The chain dimension temperature coefficient, d In (R2)o/dT, was found to be respectively −0.1 × 10−3 and 0.4 × 10−3 deg−1. These values, with one exception, disagree with the rotational isomeric state predictions as well as with those values obtained via intrinsic viscosity measurements either at θ conditions or in perceived athermal solvents. Conversely, excellent agreement was obtained with the values available from both thermoelastic and rheological measurements on atactic poly(1-butene).

Original languageEnglish (US)
Pages (from-to)6148-6155
Number of pages8
JournalMacromolecules
Volume25
Issue number23
DOIs
StatePublished - Nov 1 1992

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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