Details
| Original language | English |
|---|---|
| Pages (from-to) | 20-23 |
| Number of pages | 4 |
| Journal | KGK Kautschuk Gummi Kunststoffe |
| Volume | 65 |
| Issue number | 7-8 |
| Publication status | Published - Jul 2012 |
| Externally published | Yes |
Abstract
Using chemiluminescence the effect of oxidative aging double bonds in the polymer backbone was quantifi-cated for polydienes. The consumption, the efficiency depending on the molecular structure, the generation of active intermediates and the fate of p-phenylenediamines during thermal-oxidative aging were investigated. By means of OIT determinations, a high correlation could be shown between the effectiveness of the antioxidants and the type of substituents at the nitrogen atom. Activation energies and rate constants of the antioxidant consumption were determined. Dependent on aging-time the identification of the reaction product results in al-dehyde adducts of the corresponding PPD. Investigations on 6PPD/ squalene-based model systems by means of chemiluminescence, FT-IR, GC-MS and LC-MS led to hydroxylated squalene derivatives and aldehyde adducts.
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Polymers and Plastics
- Engineering(all)
- Industrial and Manufacturing Engineering
- Materials Science(all)
- Materials Chemistry
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In: KGK Kautschuk Gummi Kunststoffe, Vol. 65, No. 7-8, 07.2012, p. 20-23.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Aging of elastomers and effectiveness of antioxidants1
AU - Giese, Ulrich
AU - Santoso, Marcus
AU - Torrej́n, Yolanda Navarro
PY - 2012/7
Y1 - 2012/7
N2 - Using chemiluminescence the effect of oxidative aging double bonds in the polymer backbone was quantifi-cated for polydienes. The consumption, the efficiency depending on the molecular structure, the generation of active intermediates and the fate of p-phenylenediamines during thermal-oxidative aging were investigated. By means of OIT determinations, a high correlation could be shown between the effectiveness of the antioxidants and the type of substituents at the nitrogen atom. Activation energies and rate constants of the antioxidant consumption were determined. Dependent on aging-time the identification of the reaction product results in al-dehyde adducts of the corresponding PPD. Investigations on 6PPD/ squalene-based model systems by means of chemiluminescence, FT-IR, GC-MS and LC-MS led to hydroxylated squalene derivatives and aldehyde adducts.
AB - Using chemiluminescence the effect of oxidative aging double bonds in the polymer backbone was quantifi-cated for polydienes. The consumption, the efficiency depending on the molecular structure, the generation of active intermediates and the fate of p-phenylenediamines during thermal-oxidative aging were investigated. By means of OIT determinations, a high correlation could be shown between the effectiveness of the antioxidants and the type of substituents at the nitrogen atom. Activation energies and rate constants of the antioxidant consumption were determined. Dependent on aging-time the identification of the reaction product results in al-dehyde adducts of the corresponding PPD. Investigations on 6PPD/ squalene-based model systems by means of chemiluminescence, FT-IR, GC-MS and LC-MS led to hydroxylated squalene derivatives and aldehyde adducts.
UR - http://www.scopus.com/inward/record.url?scp=84865483178&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84865483178
VL - 65
SP - 20
EP - 23
JO - KGK Kautschuk Gummi Kunststoffe
JF - KGK Kautschuk Gummi Kunststoffe
SN - 0948-3276
IS - 7-8
ER -