Process Efficiency and Long-Term Performance of alpha-tocopherol in Film-Blown Linear Low-Density Polyethylene
2005 (English)In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 98, 2427-2439 p.Article in journal (Refereed) Published
Alpha-Tocopherol was compared with a commercial phenolic antioxidant (Irganox 1076) as a long-term and process antioxidant in film-blown and compression-molded linear low-density polyethylene. The antioxiclant function of alpha-tocopherol was high in the film-blown material, especially in the processing, according to oxygen induction time measurements with differential scanning calorimetry. The residual content of alpha-tocopherol after processing, determined with chromatographic techniques, was less than that of the commercial phenolic antioxidant in both the film-blown and compression-molded materials. The process stabilizing efficiency was nevertheless higher for the material containing alpha-tocopherol. During the long-term stabilization, the efficiency of alpha-tocopherol was less than that of the commercial phenolic stabilizer Irganox 1076 in the thin films, according to chemiluminescence and infrared measurements. The long-term efficiency in the compression-molded samples stabilized with alpha-tocopherol or Irganox 1076 was equally good because of the low loss of both alpha-tocopherol and Irganox 1076 from the thicker films
Place, publisher, year, edition, pages
2005. Vol. 98, 2427-2439 p.
ageing, antioxidants, polyethylene (PE)
IdentifiersURN: urn:nbn:se:kth:diva-5752DOI: 10.1002/app.22435ISI: 000233091800012ScopusID: 2-s2.0-30544440859OAI: oai:DiVA.org:kth-5752DiVA: diva2:10227
QC 201009212006-05-172006-05-172010-09-21Bibliographically approved