Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy
Industrial low-density polyethylene (LDPE) was aged in stagnant distilled water during one year. Two types of this material were studied. The first one was without additives and the second type was doped with 4% of hindered-amine light stabilizers (HALS). Using X-ray photoelectron spectroscopy (XPS)...
| Format: | Article |
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| Language: | English |
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Budapest University of Technology
2007-08-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0000313&mi=cd |
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| collection | DOAJ |
| description | Industrial low-density polyethylene (LDPE) was aged in stagnant distilled water during one year. Two types of this material were studied. The first one was without additives and the second type was doped with 4% of hindered-amine light stabilizers (HALS). Using X-ray photoelectron spectroscopy (XPS), the evidence that an oxidation occurs was demonstrated for the two types of LDPE (with and without HALS). One objective was to observe the chemical groups resulting of the ageing and to propose a mechanism of hydrolytic degradation for LDPE. The analysis of C1s spectra shows that the main oxidation products are C–O and C=O groups. Unlike the hydrolytic degradation of polypropylene, there is no presence of O=C–O groups, which suggests that there is no oxidative chain scission during hydrolytic ageing of the LDPE. The other objective of the study was to observe if the HALS can have an influence in the hydrolytic ageing of the LDPE. The values of the atomic concentration of the oxygen for the two types of samples show that the HALS could slightly slow down the oxidation of the LDPE. |
| first_indexed | 2024-12-18T19:08:20Z |
| format | Article |
| id | doaj.art-b10b704179724fb3bec135f97cd6b10b |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-18T19:08:20Z |
| publishDate | 2007-08-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-b10b704179724fb3bec135f97cd6b10b2022-12-21T20:56:21ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2007-08-011850651110.3144/expresspolymlett.2007.72Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopyIndustrial low-density polyethylene (LDPE) was aged in stagnant distilled water during one year. Two types of this material were studied. The first one was without additives and the second type was doped with 4% of hindered-amine light stabilizers (HALS). Using X-ray photoelectron spectroscopy (XPS), the evidence that an oxidation occurs was demonstrated for the two types of LDPE (with and without HALS). One objective was to observe the chemical groups resulting of the ageing and to propose a mechanism of hydrolytic degradation for LDPE. The analysis of C1s spectra shows that the main oxidation products are C–O and C=O groups. Unlike the hydrolytic degradation of polypropylene, there is no presence of O=C–O groups, which suggests that there is no oxidative chain scission during hydrolytic ageing of the LDPE. The other objective of the study was to observe if the HALS can have an influence in the hydrolytic ageing of the LDPE. The values of the atomic concentration of the oxygen for the two types of samples show that the HALS could slightly slow down the oxidation of the LDPE.http://www.expresspolymlett.com/letolt.php?file=EPL-0000313&mi=cdDamage mechanismlow-density polyethylenehydrolytic degradationX-ray photoelectron spectroscooxidation |
| spellingShingle | Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy eXPRESS Polymer Letters Damage mechanism low-density polyethylene hydrolytic degradation X-ray photoelectron spectrosco oxidation |
| title | Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy |
| title_full | Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy |
| title_fullStr | Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy |
| title_full_unstemmed | Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy |
| title_short | Action of water in the degradation of low-density polyethylene studied by X-ray photoelectron spectroscopy |
| title_sort | action of water in the degradation of low density polyethylene studied by x ray photoelectron spectroscopy |
| topic | Damage mechanism low-density polyethylene hydrolytic degradation X-ray photoelectron spectrosco oxidation |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0000313&mi=cd |