Mechanisms of antioxidant action: polymer grafted antioxidants

Evans, Brendan; Scott, Gerald

doi:10.1016/0014-3057(74)90191-8

Cited by 31 publications

(3 citation statements)

References 6 publications

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“…None of these compounds were effective under conditions where the antioxidant could be leached out of the polymer. 15 This is shown in table 2, which shows that the induction period in the oxygen absorption test was reduced to a constant and very low value (in fact identical to a control sample with no antioxidant) after acetone leaching. A sample of polypropylene into which DBBA had been surface grafted behaved very differently however.…”

Section: Stabilisation Of Polymers Against the Effects Of The Environmentioning

confidence: 88%

“…This very dramatic improvement is attributed to the more uniform distribution of the antioxidant molecules in the polymer. 15 Ta6/e 2. Stability of polypropylene films containing antioxidants (before and after acetone leaching) 15 Induction period in oxygen absorption (hrs at 120°C) …”

Section: Stabilisation Of Polymers Against the Effects Of The Environmentioning

confidence: 99%

“…It can be shown that in an oxygen absorption test in a closed system (which does not involve loss of antioxidant from the polymer by volatilisation) the low molecular weight commercial antioxidant (tert-butyl-p-cresol) TBC is highly effective. 15 It is almost ineffective in an air oven test which simulates the effect of antioxidant loss from the polymer under practical conditions. A similar behaviour was found with di-tert-butylbenzylacrylate (DBBA) although this compound is somewhat less effective in the oxygen absorption test.…”

Section: Stabilisation Of Polymers Against the Effects Of The Environmentioning

confidence: 99%

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Materials conservation and the polymer industry

Scott¹

1975

Pigment &Amp; Resin Technology

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The total utilisable resources of carbon in the biosphere are enormous by any standards. In the atmosphere alone there are about 700 billion tons of carbon as carbon dioxide and in the oceans there are stored 35,000 billion tons of available carbon dioxide. These two reserves alone amount to about four times the estimated total reserves of carbon in the form of coal and oil. The essential difference between these alternative sources of carbon is that whereas the carbon in the biological cycle is being continuously circulated in a system in which the total amount of carbon remains sensibly constant (there is a further 30,000 billion tons of carbon in the form of biological organic matter), the carbon in the form of coal and oil reserves are being rapidly depleted with consequent escalating cost and the lifetime of this source of chemicals and energy is variously estimated as being between 20 and 50 years.

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Section: Stabilisation Of Polymers Against the Effects Of The Environmentioning

confidence: 88%

Section: Stabilisation Of Polymers Against the Effects Of The Environmentioning

confidence: 99%

Section: Stabilisation Of Polymers Against the Effects Of The Environmentioning

confidence: 99%

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Materials conservation and the polymer industry

Scott¹

1975

Pigment &Amp; Resin Technology

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Netzwerkgebundene oxidationsinhibitoren in vernetztem polyäthylen

Gentzkow

Wiedenmann

1977

Angew. Makromol. Chem.

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Es wird über neue Oxidationsinhibitoren für vernetztes Polyäthylen berichtet, die auf Grund ihres Aufbaus aus einem oxidationsinhibierenden und einem vernetzungsverstärkenden Teil bei der Vernetzung des Polyäthylens in das Polymernetzwerk eingebaut werden. Als Folge des Einbaus sind diese Stabilisatoren migrationsstabil, nicht flüchtig und bewirken eine stark verbesserte Langzeitstabilisierung des vernetzten Polyäthylens, wie vergleichende Messungen der Sauerstoffaufnahme von vernetzten Polyäthylenproben mit eingebauten Oxidationsinhibitoren und mit entsprechenden, nicht einbaubaren Verbindungen zeigen.

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