Biodegradable amylose-g-PLA glycopolymers from renewable resources
Identifieur interne : 000F90 ( Main/Exploration ); précédent : 000F89; suivant : 000F91Biodegradable amylose-g-PLA glycopolymers from renewable resources
Auteurs : Rachid Ouhib [Algérie] ; Benjamin Renault [France] ; Hanna Mouaziz [France] ; Cécile Nouvel [France] ; Édith Dellacherie [France] ; Jean-Luc Six [France]Source :
- Carbohydrate polymers [ 0144-8617 ] ; 2009.
Descripteurs français
- Pascal (Inist)
- Dérivé de l'amylose, Copolymère greffé, Lactique acide copolymère, Préparation, Modification chimique, Amylose, Protection chimique, Triméthylsilylation, Régiosélectivité, Optimisation, Condition opératoire, Greffage, Polymérisation ouverture cycle, Déprotection, Etude expérimentale, Amylose copolymère greffé.
English descriptors
- KwdEn :
Abstract
The synthesis of biodegradable PLA-grafted amylose copolymers has been achieved in three steps to control their architecture as best as possible. First, amylose was partially protected with various silylating agents, especially N,O-bis-(trimethylsilyl)acetamide (BSA). The influence of the silylating agent chemistry and of the BSA/OH molar ratio on the protection yield have been investigated. Furthermore, the reactivity order of the different OH functions towards silylation has been evaluated. The second step is based on the "grafting form" strategy: polylactide (PLA) grafts were generated by the Ring Opening Polymerization (ROP) of D,L-lactide from the free remaining OH groups carried by the partially silylated amylose. Finally, the silylether groups cleavage was tested under various conditions to obtain the PLA-grafted amylose (A-g-PLA), while avoiding backbone and grafts degradation. In addition, two polyelectrolytes, i.e., LiCl and NaN03 have been used to facilitate the SEC analysis of native amylose.
Affiliations:
- Algérie, France
- Grand Est, Lorraine (région)
- Nancy
- Centre national de la recherche scientifique, Laboratoire réactions et génie des procédés, Université de Lorraine
Links toward previous steps (curation, corpus...)
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- to stream PascalFrancis, to step Curation: 000791
- to stream PascalFrancis, to step Checkpoint: 000317
- to stream Main, to step Merge: 001186
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Le document en format XML
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aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName></affiliation></author><author><name sortKey="Dellacherie, Edith" sort="Dellacherie, Edith" uniqKey="Dellacherie E" first="Edith" last="Dellacherie">Édith Dellacherie</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire de Chimie-Physique Macromoléculaire (LCPM), UMR CNRS-INPL 7568, Nancy University, Groupe ENSIC, 1 rue Grandville, BP 20451</s1><s2>54001 Nancy</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author><author><name sortKey="Six, Jean Luc" sort="Six, Jean Luc" uniqKey="Six J" first="Jean-Luc" last="Six">Jean-Luc Six</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire de Chimie-Physique Macromoléculaire (LCPM), UMR CNRS-INPL 7568, Nancy University, Groupe ENSIC, 1 rue Grandville, BP 20451</s1><s2>54001 Nancy</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Carbohydrate polymers</title><title level="j" type="abbreviated">Carbohydr. polym.</title><idno type="ISSN">0144-8617</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Carbohydrate polymers</title><title level="j" type="abbreviated">Carbohydr. polym.</title><idno type="ISSN">0144-8617</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amylose</term><term>Amylose derivative</term><term>Chemical modification</term><term>Chemical protection</term><term>Deprotection</term><term>Experimental study</term><term>Graft copolymer</term><term>Grafting</term><term>Lactic acid copolymer</term><term>Operating conditions</term><term>Optimization</term><term>Preparation</term><term>Regioselectivity</term><term>Ring opening polymerization</term><term>Trimethylsilylation</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Dérivé de l'amylose</term><term>Copolymère greffé</term><term>Lactique acide copolymère</term><term>Préparation</term><term>Modification chimique</term><term>Amylose</term><term>Protection chimique</term><term>Triméthylsilylation</term><term>Régiosélectivité</term><term>Optimisation</term><term>Condition opératoire</term><term>Greffage</term><term>Polymérisation ouverture cycle</term><term>Déprotection</term><term>Etude expérimentale</term><term>Amylose copolymère greffé</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The synthesis of biodegradable PLA-grafted amylose copolymers has been achieved in three steps to control their architecture as best as possible. First, amylose was partially protected with various silylating agents, especially N,O-bis-(trimethylsilyl)acetamide (BSA). The influence of the silylating agent chemistry and of the BSA/OH molar ratio on the protection yield have been investigated. Furthermore, the reactivity order of the different OH functions towards silylation has been evaluated. The second step is based on the "grafting form" strategy: polylactide (PLA) grafts were generated by the Ring Opening Polymerization (ROP) of D,L-lactide from the free remaining OH groups carried by the partially silylated amylose. Finally, the silylether groups cleavage was tested under various conditions to obtain the PLA-grafted amylose (A-g-PLA), while avoiding backbone and grafts degradation. In addition, two polyelectrolytes, i.e., LiCl and NaN0<sub>3</sub> have been used to facilitate the SEC analysis of native amylose.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Nancy</li></settlement><orgName><li>Centre national de la recherche scientifique</li><li>Laboratoire réactions et génie des procédés</li><li>Université de Lorraine</li></orgName></list><tree><country name="Algérie"><noRegion><name sortKey="Ouhib, Rachid" sort="Ouhib, Rachid" uniqKey="Ouhib R" first="Rachid" last="Ouhib">Rachid Ouhib</name></noRegion></country><country name="France"><region name="Grand Est"><name sortKey="Renault, Benjamin" sort="Renault, Benjamin" uniqKey="Renault B" first="Benjamin" last="Renault">Benjamin Renault</name></region><name sortKey="Dellacherie, Edith" sort="Dellacherie, Edith" uniqKey="Dellacherie E" first="Edith" last="Dellacherie">Édith Dellacherie</name><name sortKey="Mouaziz, Hanna" sort="Mouaziz, Hanna" uniqKey="Mouaziz H" first="Hanna" last="Mouaziz">Hanna Mouaziz</name><name sortKey="Nouvel, Cecile" sort="Nouvel, Cecile" uniqKey="Nouvel C" first="Cécile" last="Nouvel">Cécile Nouvel</name><name sortKey="Six, Jean Luc" sort="Six, Jean Luc" uniqKey="Six J" first="Jean-Luc" last="Six">Jean-Luc Six</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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