TY - JOUR
T1 - Learning from mother nature
T2 - exploiting a biological antioxidant for the melt stabilisation of polymers
AU - Al-Malaika, Sahar
N1 - Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2001/12/5
Y1 - 2001/12/5
N2 - An overview of the antioxidant role of the biologically active form of vitamin E, α-tocopherol, in polyolefins is discussed. The effect of the vitamin antioxidant on the melt and colour stability of polyethylene (PE) and polypropylene (PP) is highlighted. It is shown that tocopherol is a highly effective antioxidant that results in superior melt stabilisation of polyolefins particularly when used at much lower concentration than that needed for conventional synthetic hindered phenol processing stabilisers. As with other hindered phenols,α-tocopherol imparts also some colour to the polymer but this is shown to be reduced drastically in the presence of other antioxidants, such as phosphites, or other additives, such as polyhydric alcohols.
AB - An overview of the antioxidant role of the biologically active form of vitamin E, α-tocopherol, in polyolefins is discussed. The effect of the vitamin antioxidant on the melt and colour stability of polyethylene (PE) and polypropylene (PP) is highlighted. It is shown that tocopherol is a highly effective antioxidant that results in superior melt stabilisation of polyolefins particularly when used at much lower concentration than that needed for conventional synthetic hindered phenol processing stabilisers. As with other hindered phenols,α-tocopherol imparts also some colour to the polymer but this is shown to be reduced drastically in the presence of other antioxidants, such as phosphites, or other additives, such as polyhydric alcohols.
KW - alpha tocopherol
KW - antioxidant
KW - free radical
KW - autooxidation
KW - food preservation
KW - lipid peroxidation
UR - http://www.scopus.com/inward/record.url?scp=0035678904&partnerID=8YFLogxK
UR - http://onlinelibrary.wiley.com/doi/10.1002/1521-3900%28200112%29176:1%3C107::AID-MASY107%3E3.0.CO;2-1/abstract
U2 - 10.1002/1521-3900(200112)176:1<107::AID-MASY107>3.0.CO;2-1
DO - 10.1002/1521-3900(200112)176:1<107::AID-MASY107>3.0.CO;2-1
M3 - Article
AN - SCOPUS:0035678904
VL - 176
SP - 107
EP - 117
JO - Macromolecular Symposia
JF - Macromolecular Symposia
SN - 1022-1360
IS - 1
ER -