Thermal analysis of stabilized polymers

The influence of a number of amine and phenol type stabilizers on the value of the activation energy ( E) of thermal-oxidative degradation of polyethylene (PE), polyethylene therephthalate (PET) and polycaproamide (PCA) has been investigated. The dependence of the activation energy of PE thermal-oxi...

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Bibliographic Details
Published in:Thermochimica acta 1986, Vol.97, p.351-355
Main Authors: Matusevich, Yu.I., Krul, L.P
Format: Article
Language:English
Subjects:
Applied sciences
Chemical reactions and properties
Crosslinking, vulcanization
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
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Summary:The influence of a number of amine and phenol type stabilizers on the value of the activation energy ( E) of thermal-oxidative degradation of polyethylene (PE), polyethylene therephthalate (PET) and polycaproamide (PCA) has been investigated. The dependence of the activation energy of PE thermal-oxidative degradation on the concentration of such stabilizers as 2,6-di- tert-butyl-4-methylphenol; 2,2-methylene-bis(6- tert-butyl-4-methylphenol); NN-di(naphthyl-2)phenylenediamine-1,4; bis[(3,5-di- tert-butyl-4-hydroxyphenyl)ethoxycarbonylethyl] sulfide is of an extreme character, the maximum activation energy being observed at a stabilizer concentration of 0.1–0.5%. Dispersion of the stabilizer introduced to molecular level, achieved during its chemical addition to macromolecules, provides an increasing effect on thermal stability. The results of thermal analysis of the stabilized polymers have been used to explain their stress-strain properties.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(86)87038-1