Matches in SemOpenAlex for { <https://semopenalex.org/work/W1973646301> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W1973646301 endingPage "1100" @default.
- W1973646301 startingPage "1085" @default.
- W1973646301 abstract "Abstract Oxidation of bis[2,2,6,6‐tetramethyl‐4‐piperidinyl] sebacate (HALS) to itroxy radicals has been monitored by ESR spectroscopy in three polymers: an ethylene‐propylene random copolymer (EPM), a styrene‐butadiene‐styrene block copolymer (SBS) and the same block copolymer previously hydroperoxidized by reaction with singlet oxygen. Nitroxy radicals are produced in all three polymers on irradiation in the presence of oxygen and, in the last one also in the dark, at room temperature. The mechanism of the reaction is discussed: it involves direct interaction of a peroxy radical with the piperidine nitrogen. The role of clustered hydroperoxides as a source of peroxy radicals is emphasized. Inhibition of the photo‐oxidation of all three polymers by HALS has been studied by oxygen absorption measurements and by infra‐red spectroscopy in the carbonyl region. The results indicate that HALS not only inhibits the propagation of the photo‐oxidation but also catalyses a new type of termination that, in some polymers, delays the production of ketones. It is suggested that the practical efficiency of HALS in keeping the mechanical properties of polyolefins exposed to sunlight is mainly due to that last effect." @default.
- W1973646301 created "2016-06-24" @default.
- W1973646301 creator A5027234883 @default.
- W1973646301 creator A5028218081 @default.
- W1973646301 creator A5083180506 @default.
- W1973646301 date "1990-01-01" @default.
- W1973646301 modified "2023-10-14" @default.
- W1973646301 title "The Mechanism of Action of Hindered Amine Stabilizers. Production of Nitroxy Radicals and Inhibition of the Photo‐Oxidation in Different Polymers" @default.
- W1973646301 cites W1544657589 @default.
- W1973646301 cites W1968126478 @default.
- W1973646301 cites W1986498445 @default.
- W1973646301 cites W2005088912 @default.
- W1973646301 cites W2019109311 @default.
- W1973646301 cites W2041308447 @default.
- W1973646301 cites W2061234509 @default.
- W1973646301 cites W2065583408 @default.
- W1973646301 cites W2072482586 @default.
- W1973646301 cites W2083611835 @default.
- W1973646301 cites W2090773849 @default.
- W1973646301 cites W2094768143 @default.
- W1973646301 cites W2129770575 @default.
- W1973646301 cites W2334208199 @default.
- W1973646301 cites W2479399594 @default.
- W1973646301 cites W4248865774 @default.
- W1973646301 cites W4302975756 @default.
- W1973646301 doi "https://doi.org/10.1002/bscb.19900991127" @default.
- W1973646301 hasPublicationYear "1990" @default.
- W1973646301 type Work @default.
- W1973646301 sameAs 1973646301 @default.
- W1973646301 citedByCount "9" @default.
- W1973646301 countsByYear W19736463012015 @default.
- W1973646301 crossrefType "journal-article" @default.
- W1973646301 hasAuthorship W1973646301A5027234883 @default.
- W1973646301 hasAuthorship W1973646301A5028218081 @default.
- W1973646301 hasAuthorship W1973646301A5083180506 @default.
- W1973646301 hasConcept C131779359 @default.
- W1973646301 hasConcept C139066938 @default.
- W1973646301 hasConcept C15920480 @default.
- W1973646301 hasConcept C178790620 @default.
- W1973646301 hasConcept C185592680 @default.
- W1973646301 hasConcept C188027245 @default.
- W1973646301 hasConcept C2777516457 @default.
- W1973646301 hasConcept C2777566558 @default.
- W1973646301 hasConcept C2781462491 @default.
- W1973646301 hasConcept C521977710 @default.
- W1973646301 hasConcept C540031477 @default.
- W1973646301 hasConcept C75473681 @default.
- W1973646301 hasConceptScore W1973646301C131779359 @default.
- W1973646301 hasConceptScore W1973646301C139066938 @default.
- W1973646301 hasConceptScore W1973646301C15920480 @default.
- W1973646301 hasConceptScore W1973646301C178790620 @default.
- W1973646301 hasConceptScore W1973646301C185592680 @default.
- W1973646301 hasConceptScore W1973646301C188027245 @default.
- W1973646301 hasConceptScore W1973646301C2777516457 @default.
- W1973646301 hasConceptScore W1973646301C2777566558 @default.
- W1973646301 hasConceptScore W1973646301C2781462491 @default.
- W1973646301 hasConceptScore W1973646301C521977710 @default.
- W1973646301 hasConceptScore W1973646301C540031477 @default.
- W1973646301 hasConceptScore W1973646301C75473681 @default.
- W1973646301 hasIssue "11-12" @default.
- W1973646301 hasLocation W19736463011 @default.
- W1973646301 hasOpenAccess W1973646301 @default.
- W1973646301 hasPrimaryLocation W19736463011 @default.
- W1973646301 hasRelatedWork W1502341940 @default.
- W1973646301 hasRelatedWork W1572147535 @default.
- W1973646301 hasRelatedWork W1988234319 @default.
- W1973646301 hasRelatedWork W2008450937 @default.
- W1973646301 hasRelatedWork W2094009369 @default.
- W1973646301 hasRelatedWork W2410583022 @default.
- W1973646301 hasRelatedWork W2616332204 @default.
- W1973646301 hasRelatedWork W2887159242 @default.
- W1973646301 hasRelatedWork W3149492248 @default.
- W1973646301 hasRelatedWork W54812405 @default.
- W1973646301 hasVolume "99" @default.
- W1973646301 isParatext "false" @default.
- W1973646301 isRetracted "false" @default.
- W1973646301 magId "1973646301" @default.
- W1973646301 workType "article" @default.