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Kaloustian, J.; Antonetti, P.; Berrada, A.; Claire, Y.; Périchaud, A.

doi:10.1023/a:1010149607364

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…Specifically, to study volume transformations, thermogravimetric analysis allows for the determination of weight loss upon heating while differential thermal analysis measures temperatures pertaining to physical transformations and enthalpy variations. 1 These studies showed that the degradation of the properties of a polymer begins on its surface. X-ray photoelectron spectroscopy (XPS) recently allowed us to probe the surface in order to determine the changes caused by various types of aging.…”

Section: Introductionmentioning

confidence: 99%

IR spectroscopy study of polypropylene natural aging

Rjeb

Tajounte

Idrissi

et al. 2000

J. Appl. Polym. Sci.

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Section: Introductionmentioning

confidence: 99%

IR spectroscopy study of polypropylene natural aging

Rjeb

Tajounte

Idrissi

et al. 2000

J. Appl. Polym. Sci.

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“…This index is used to characterize the amplitude of degradation [4]. The absorption of carbonyl can be considered as an index of ageing that allows the global assessment of the progress of the reaction of photo oxidation that leads to a complex mixture of oxidation products such as ketones, acids, esters, peracides, and peresters [10].…”

Section: Ftir Spectroscopic Analysismentioning

confidence: 99%

Effect of Pro Oxidant Agents on the Ageing of Polypropylene

2015

(SWES)

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The aim of this work is to study the influence of pro oxidant agents on the natural ageing of polypropylene (PP). For that purpose, two formulations containing, respectively, 5 wt % of Ca stearate and Ca/Zn complex as pro oxidant agents were prepared and exposed during 18 months to exterior natural conditions of Mediterranean climate. For comparison, a control formulation based only on PP was prepared. Samples were taken off every three months and characterized. The evolution of mechanical properties was followed by tensile test and Shore D hardness while the chemical modifications were analysed by Fourier transform infrared spectroscopy (FTIR). The results showed that all the considered formulations were affected but those containing the pro oxidant agents were the most affected. Moreover, Ca stearate is more effective than Ca/Zn complex as pro oxidant agent.

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