FTIR spectroscopic studies of isotactic polypropylene films under stress

The results of dynamic stressing experiments on isotactic polypropylene film samples with draw ratios (λ) of 5 and 11.7 on the vibrational spectra are measured using FTIR spectroscopy up to a maximum applied stress of 29 kg mm −2. The effects of stressing on the vibrational band wavenumbers are comp...

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Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1991, Vol.47 (12), p.1677-1683
Main Authors: Chalmers, J.M, Mackenzie, M.W., Willis, H.A., Edwards, H.G.M., Lees, J.S., Long, D.A.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical properties
Physical properties
Polymer industry, paints, wood
Properties and testing
Technology of polymers
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Summary:The results of dynamic stressing experiments on isotactic polypropylene film samples with draw ratios (λ) of 5 and 11.7 on the vibrational spectra are measured using FTIR spectroscopy up to a maximum applied stress of 29 kg mm −2. The effects of stressing on the vibrational band wavenumbers are compared with results of previous work and it is concluded that both CC skeletal backbone stretching and helical uncoiling are involved in the mechanism of stressing at the molecular level.
ISSN:0584-8539
DOI:10.1016/0584-8539(91)80005-4