Kinetic study of hindered amine light stabilizer photografting in low density polyethylene films under natural weathering conditions
Identifieur interne : 001183 ( Istex/Curation ); précédent : 001182; suivant : 001184Kinetic study of hindered amine light stabilizer photografting in low density polyethylene films under natural weathering conditions
Auteurs : M. Kaci [Algérie] ; G. Hebal [Algérie] ; A. Benhamida [Algérie] ; A. Boukerrou [Algérie] ; H. Djidjelli [Algérie] ; T. Sadoun [Algérie]Source :
- Journal of Applied Polymer Science [ 0021-8995 ] ; 2002-05-23.
English descriptors
- KwdEn :
Abstract
The photografting kinetic of a hindered amine light stabilizer (HALS) was studied in low density polyethylene (LDPE) films under natural weathering conditions. The HALS (PBH‐3) was added to the polymer at a concentration of 0.3% (w/w). The photografting kinetic of polymer bound HALS (PBH‐3) was determined by direct spectroscopic measurements through the absorption band area of the stabilizer centered at 308 nm in the UV spectra and 1605 cm−1 in Fourier transform IR (FTIR) spectra, which correspond to benzylidene malonate ester and benzylidene malonic groups, respectively. In parallel, measurements were carried out on the free PBH‐3 content after chloroform extraction of the photostabilizer from the polymer matrix by means of UV and gas chromatography methods. The results showed that in natural weathering the grafting of PBH‐3 occurred in the LDPE film after very short exposure times of 127 and 168 h as determined by UV and FTIR, respectively. Moreover, the curves describing both the photografting and the free HALS kinetics exhibited similar profiles. The mechanism of photografting implies a rapid photoreaction between the methylenic double bond of the stabilizer and the macroalkyl radicals of the polymer, resulting in formation of polymer‐bonded aminyl derivatives of the stabilizer. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 1524–1532, 2002; DOI 10.1002/app.10492
Url:
DOI: 10.1002/app.10492
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: Pour aller vers cette notice dans l'étape Curation :001717
Links to Exploration step
ISTEX:A88F2C7E2CC7DC08EB6A289678E2C6042C61A405Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Kinetic study of hindered amine light stabilizer photografting in low density polyethylene films under natural weathering conditions</title><author><name sortKey="Kaci, M" sort="Kaci, M" uniqKey="Kaci M" first="M." last="Kaci">M. Kaci</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria===</mods:affiliation><country xml:lang="fr" wicri:curation="lc">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Hebal, G" sort="Hebal, G" uniqKey="Hebal G" first="G." last="Hebal">G. Hebal</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Benhamida, A" sort="Benhamida, A" uniqKey="Benhamida A" first="A." last="Benhamida">A. Benhamida</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Boukerrou, A" sort="Boukerrou, A" uniqKey="Boukerrou A" first="A." last="Boukerrou">A. Boukerrou</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Djidjelli, H" sort="Djidjelli, H" uniqKey="Djidjelli H" first="H." last="Djidjelli">H. Djidjelli</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Sadoun, T" sort="Sadoun, T" uniqKey="Sadoun T" first="T." last="Sadoun">T. Sadoun</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:A88F2C7E2CC7DC08EB6A289678E2C6042C61A405</idno><date when="2002" year="2002">2002</date><idno type="doi">10.1002/app.10492</idno><idno type="url">https://api.istex.fr/document/A88F2C7E2CC7DC08EB6A289678E2C6042C61A405/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001717</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001717</idno><idno type="wicri:Area/Istex/Curation">001183</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Kinetic study of hindered amine light stabilizer photografting in low density polyethylene films under natural weathering conditions</title><author><name sortKey="Kaci, M" sort="Kaci, M" uniqKey="Kaci M" first="M." last="Kaci">M. Kaci</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria===</mods:affiliation><country xml:lang="fr" wicri:curation="lc">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Hebal, G" sort="Hebal, G" uniqKey="Hebal G" first="G." last="Hebal">G. Hebal</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Benhamida, A" sort="Benhamida, A" uniqKey="Benhamida A" first="A." last="Benhamida">A. Benhamida</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Boukerrou, A" sort="Boukerrou, A" uniqKey="Boukerrou A" first="A." last="Boukerrou">A. Boukerrou</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Djidjelli, H" sort="Djidjelli, H" uniqKey="Djidjelli H" first="H." last="Djidjelli">H. Djidjelli</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author><author><name sortKey="Sadoun, T" sort="Sadoun, T" uniqKey="Sadoun T" first="T." last="Sadoun">T. Sadoun</name><affiliation wicri:level="1"><mods:affiliation>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000, Algeria</mods:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Organic Materials Laboratory, Chemical Engineering Department, Route de Targa‐Ouzemmour, Université A. Mira de Béjaia 06000</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Applied Polymer Science</title><title level="j" type="abbrev">J. Appl. Polym. Sci.</title><idno type="ISSN">0021-8995</idno><idno type="eISSN">1097-4628</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>New York</pubPlace><date type="published" when="2002-05-23">2002-05-23</date><biblScope unit="volume">84</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="1524">1524</biblScope><biblScope unit="page" to="1532">1532</biblScope></imprint><idno type="ISSN">0021-8995</idno></series><idno type="istex">A88F2C7E2CC7DC08EB6A289678E2C6042C61A405</idno><idno type="DOI">10.1002/app.10492</idno><idno type="ArticleID">APP10492</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-8995</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>hindered amine light stabilizer</term><term>low density polyethylene</term><term>natural weathering</term><term>photografting kinetic</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The photografting kinetic of a hindered amine light stabilizer (HALS) was studied in low density polyethylene (LDPE) films under natural weathering conditions. The HALS (PBH‐3) was added to the polymer at a concentration of 0.3% (w/w). The photografting kinetic of polymer bound HALS (PBH‐3) was determined by direct spectroscopic measurements through the absorption band area of the stabilizer centered at 308 nm in the UV spectra and 1605 cm−1 in Fourier transform IR (FTIR) spectra, which correspond to benzylidene malonate ester and benzylidene malonic groups, respectively. In parallel, measurements were carried out on the free PBH‐3 content after chloroform extraction of the photostabilizer from the polymer matrix by means of UV and gas chromatography methods. The results showed that in natural weathering the grafting of PBH‐3 occurred in the LDPE film after very short exposure times of 127 and 168 h as determined by UV and FTIR, respectively. Moreover, the curves describing both the photografting and the free HALS kinetics exhibited similar profiles. The mechanism of photografting implies a rapid photoreaction between the methylenic double bond of the stabilizer and the macroalkyl radicals of the polymer, resulting in formation of polymer‐bonded aminyl derivatives of the stabilizer. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 1524–1532, 2002; DOI 10.1002/app.10492</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NickelMaghrebV1/Data/Istex/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001183 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Curation/biblio.hfd -nk 001183 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= NickelMaghrebV1
|flux= Istex
|étape= Curation
|type= RBID
|clé= ISTEX:A88F2C7E2CC7DC08EB6A289678E2C6042C61A405
|texte= Kinetic study of hindered amine light stabilizer photografting in low density polyethylene films under natural weathering conditions
}}
| This area was generated with Dilib version V0.6.27. |  |