Positron Annihilation Lifetime in situ Study of Deformed Polyolefin Elastomers

• Authors: K. Krzemień , J. Kansy , J. Frąckowiak
• Languages of publication: EN

Abstracts

EN

The positron annihilation lifetime spectroscopy was used to investigate the free volume hole size of ethylene octane copolymers as a function of deformation in the range from 0 to 110% in steps of 10%. For each degree of deformation a series of 5-6 positron annihilation lifetime spectra was collected in situ. All spectra of a given series were analysed simultaneously. They were resolved into three exponential components, of lifetimes parametersτ_i and intensities I_i. The variations ofτ_3 reflect three deformation regions, the elastic range, strain softening range, and plastic region.

Keywords

EN

78.70.Bj; 71.60.+z; 61.41.+e

Discipline

• 71.60.+z: Positron states(for positron annihilation, see 78.70.Bj)
• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 61.41.+e: Polymers, elastomers, and plastics(see also 81.05.Lg in materials science; for rheology of polymers, see section 83; for polymer reactions and polymerization, see 82.35.-x in physical chemistry and chemical physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 5
• Pages: 837-841

Dates

published

2005-05

received

2004-09-20

Contributors

author

K. Krzemień

• Institute of Material Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland

author

J. Kansy

• Institute of Material Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland

author

J. Frąckowiak

• Institute of Material Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland

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Identifiers

DOI

10.12693/APhysPolA.107.837