PLA-PHB-PLA Triblock Copolymers: Synthesis by Sequential Addition and Investigation of Mechanical and Rheological Properties
Identifieur interne : 000761 ( Main/Repository ); précédent : 000760; suivant : 000762PLA-PHB-PLA Triblock Copolymers: Synthesis by Sequential Addition and Investigation of Mechanical and Rheological Properties
Auteurs : RBID : Pascal:13-0245933Descripteurs français
- Pascal (Inist)
- Catalyseur complexe, Complexe d'indium, Complexe dinucléaire, Complexe chloro, Activité catalytique, Copolymérisation ouverture cycle, Lactique acide copolymère, Copolymère optiquement actif, Copolymère aliphatique, Polymère monodispersé, Préparation, Propriété traction, Propriété rhéologique, Viscoélasticité, Etat fondu, Etude expérimentale, Butyrolactone copolymère, Viscosité complexe.
English descriptors
- KwdEn :
- Aliphatic copolymer, Catalyst activity, Chloro complex, Complex catalyst, Dinuclear complex, Experimental study, Indium complex, Lactic acid copolymer, Molten state, Monodispersed polymer, Optically active copolymer, Preparation, Rheological properties, Ring opening copolymerization, Tensile property, Viscoelasticity.
Abstract
The dinuclear indium catalyst [(NNO)InCl]2(μ-OEt)(μ-Cl), previously reported to be highly active for the living ring-opening polymerization of cyclic esters lactide (LA) and β-butyrolactone (BBL), was used to generate a series of triblock copolymers of poly(lactic acid) (PLA) and poly(hydroxybutyrate) (PHB). Copolymers PLLA-PDLLA-PLLA and PLLA-PDLLA-PDLA, synthesized via sequential monomer addition, showed low molecular weight distributions and excellent correlation between the calculated and experiment molecular weights. Significantly, triblock copolymers of the type PLA-PHB-PLA were also synthesized for the first time through a sequential addition technique. Analysis of polymers after each addition of monomer showed that although only 85% conversion was achieved after addition of BBL, the remaining chain ends were active and addition of more lactide yielded a triblock. Rheological studies of PLLA-PHB-PDLA indicated solid like behavior even well above the temperature at which stereocomplex formation was observed. These elastomeric triblocks exhibited elongations at break 5-10 times greater than those of corresponding PLLA-PDLLA-PLDA triblocks.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">PLA-PHB-PLA Triblock Copolymers: Synthesis by Sequential Addition and Investigation of Mechanical and Rheological Properties</title><author><name sortKey="Aluthge, Dinesh C" uniqKey="Aluthge D">Dinesh C. Aluthge</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemistry, University of British Columbia, 2036 Main Mail</s1><s2>Vancouver, British Columbia</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, British Columbia</wicri:noRegion></affiliation></author><author><name>CUILING XU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemistry, University of British Columbia, 2036 Main Mail</s1><s2>Vancouver, British Columbia</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, British Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Othman, Norhayani" uniqKey="Othman N">Norhayani Othman</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemical and Biological Engineering, University of British Columbia</s1><s2>Vancouver, BC</s2><s3>CAN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, BC</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Faculty of Chemical Engineering, Universiti Teknologi Malaysia</s1><s2>Skudai 81310, Johor Bahru</s2><s3>MYS</s3><sZ>3 aut.</sZ></inist:fA14><country>Malaisie</country><wicri:noRegion>Skudai 81310, Johor Bahru</wicri:noRegion></affiliation></author><author><name sortKey="Noroozi, Nazbanoo" uniqKey="Noroozi N">Nazbanoo Noroozi</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemical and Biological Engineering, University of British Columbia</s1><s2>Vancouver, BC</s2><s3>CAN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, BC</wicri:noRegion></affiliation></author><author><name sortKey="Hatzikiriakos, Sawas G" uniqKey="Hatzikiriakos S">Sawas G. Hatzikiriakos</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemical and Biological Engineering, University of British Columbia</s1><s2>Vancouver, BC</s2><s3>CAN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, BC</wicri:noRegion></affiliation></author><author><name sortKey="Mehrkhodavandi, Parisa" uniqKey="Mehrkhodavandi P">Parisa Mehrkhodavandi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemistry, University of British Columbia, 2036 Main Mail</s1><s2>Vancouver, British Columbia</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, British Columbia</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">13-0245933</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 13-0245933 INIST</idno><idno type="RBID">Pascal:13-0245933</idno><idno type="wicri:Area/Main/Corpus">000A20</idno><idno type="wicri:Area/Main/Repository">000761</idno></publicationStmt><seriesStmt><idno type="ISSN">0024-9297</idno><title level="j" type="abbreviated">Macromolecules : (Print)</title><title level="j" type="main">Macromolecules : (Print)</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aliphatic copolymer</term><term>Catalyst activity</term><term>Chloro complex</term><term>Complex catalyst</term><term>Dinuclear complex</term><term>Experimental study</term><term>Indium complex</term><term>Lactic acid copolymer</term><term>Molten state</term><term>Monodispersed polymer</term><term>Optically active copolymer</term><term>Preparation</term><term>Rheological properties</term><term>Ring opening copolymerization</term><term>Tensile property</term><term>Viscoelasticity</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Catalyseur complexe</term><term>Complexe d'indium</term><term>Complexe dinucléaire</term><term>Complexe chloro</term><term>Activité catalytique</term><term>Copolymérisation ouverture cycle</term><term>Lactique acide copolymère</term><term>Copolymère optiquement actif</term><term>Copolymère aliphatique</term><term>Polymère monodispersé</term><term>Préparation</term><term>Propriété traction</term><term>Propriété rhéologique</term><term>Viscoélasticité</term><term>Etat fondu</term><term>Etude expérimentale</term><term>Butyrolactone copolymère</term><term>Viscosité complexe</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The dinuclear indium catalyst [(NNO)InCl]<sub>2</sub>(μ-OEt)(μ-Cl), previously reported to be highly active for the living ring-opening polymerization of cyclic esters lactide (LA) and β-butyrolactone (BBL), was used to generate a series of triblock copolymers of poly(lactic acid) (PLA) and poly(hydroxybutyrate) (PHB). Copolymers PLLA-PDLLA-PLLA and PLLA-PDLLA-PDLA, synthesized via sequential monomer addition, showed low molecular weight distributions and excellent correlation between the calculated and experiment molecular weights. Significantly, triblock copolymers of the type PLA-PHB-PLA were also synthesized for the first time through a sequential addition technique. Analysis of polymers after each addition of monomer showed that although only 85% conversion was achieved after addition of BBL, the remaining chain ends were active and addition of more lactide yielded a triblock. Rheological studies of PLLA-PHB-PDLA indicated solid like behavior even well above the temperature at which stereocomplex formation was observed. These elastomeric triblocks exhibited elongations at break 5-10 times greater than those of corresponding PLLA-PDLLA-PLDA triblocks.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0024-9297</s0></fA01><fA02 i1="01"><s0>MAMOBX</s0></fA02><fA03 i2="1"><s0>Macromolecules : (Print)</s0></fA03><fA05><s2>46</s2></fA05><fA06><s2>10</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>PLA-PHB-PLA Triblock Copolymers: Synthesis by Sequential Addition and Investigation of Mechanical and Rheological Properties</s1></fA08><fA11 i1="01" i2="1"><s1>ALUTHGE (Dinesh C.)</s1></fA11><fA11 i1="02" i2="1"><s1>CUILING XU</s1></fA11><fA11 i1="03" i2="1"><s1>OTHMAN (Norhayani)</s1></fA11><fA11 i1="04" i2="1"><s1>NOROOZI (Nazbanoo)</s1></fA11><fA11 i1="05" i2="1"><s1>HATZIKIRIAKOS (Sawas G.)</s1></fA11><fA11 i1="06" i2="1"><s1>MEHRKHODAVANDI (Parisa)</s1></fA11><fA14 i1="01"><s1>Department of Chemistry, University of British Columbia, 2036 Main Mail</s1><s2>Vancouver, British Columbia</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Chemical and Biological Engineering, University of British Columbia</s1><s2>Vancouver, BC</s2><s3>CAN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="03"><s1>Faculty of Chemical Engineering, Universiti Teknologi Malaysia</s1><s2>Skudai 81310, Johor Bahru</s2><s3>MYS</s3><sZ>3 aut.</sZ></fA14><fA20><s1>3965-3974</s1></fA20><fA21><s1>2013</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>13789</s2><s5>354000505152700280</s5></fA43><fA44><s0>0000</s0><s1>© 2013 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>21 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>13-0245933</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Macromolecules : (Print)</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>The dinuclear indium catalyst [(NNO)InCl]<sub>2</sub>(μ-OEt)(μ-Cl), previously reported to be highly active for the living ring-opening polymerization of cyclic esters lactide (LA) and β-butyrolactone (BBL), was used to generate a series of triblock copolymers of poly(lactic acid) (PLA) and poly(hydroxybutyrate) (PHB). Copolymers PLLA-PDLLA-PLLA and PLLA-PDLLA-PDLA, synthesized via sequential monomer addition, showed low molecular weight distributions and excellent correlation between the calculated and experiment molecular weights. Significantly, triblock copolymers of the type PLA-PHB-PLA were also synthesized for the first time through a sequential addition technique. Analysis of polymers after each addition of monomer showed that although only 85% conversion was achieved after addition of BBL, the remaining chain ends were active and addition of more lactide yielded a triblock. Rheological studies of PLLA-PHB-PDLA indicated solid like behavior even well above the temperature at which stereocomplex formation was observed. These elastomeric triblocks exhibited elongations at break 5-10 times greater than those of corresponding PLLA-PDLLA-PLDA triblocks.</s0></fC01><fC02 i1="01" i2="X"><s0>001D09D02C</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Catalyseur complexe</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Complex catalyst</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Catalizador complejo</s0><s5>01</s5></fC03><fC03 i1="02" i2="X" l="FRE"><s0>Complexe d'indium</s0><s1>ACT</s1><s5>02</s5></fC03><fC03 i1="02" i2="X" l="ENG"><s0>Indium complex</s0><s1>ACT</s1><s5>02</s5></fC03><fC03 i1="02" i2="X" l="SPA"><s0>Indio complejo</s0><s1>ACT</s1><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Complexe dinucléaire</s0><s1>ACT</s1><s5>03</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Dinuclear complex</s0><s1>ACT</s1><s5>03</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Complejo dinuclear</s0><s1>ACT</s1><s5>03</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Complexe chloro</s0><s1>ACT</s1><s5>04</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Chloro complex</s0><s1>ACT</s1><s5>04</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Complejo cloro</s0><s1>ACT</s1><s5>04</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Activité catalytique</s0><s5>06</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Catalyst activity</s0><s5>06</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Actividad catalítica</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="FRE"><s0>Copolymérisation ouverture cycle</s0><s5>07</s5></fC03><fC03 i1="06" i2="X" l="ENG"><s0>Ring opening copolymerization</s0><s5>07</s5></fC03><fC03 i1="06" i2="X" l="SPA"><s0>Copolimerización abertura ciclo</s0><s5>07</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Lactique acide copolymère</s0><s2>NK</s2><s5>11</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Lactic acid copolymer</s0><s2>NK</s2><s5>11</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Láctico ácido copolímero</s0><s2>NK</s2><s5>11</s5></fC03><fC03 i1="08" i2="X" l="FRE"><s0>Copolymère optiquement actif</s0><s2>NK</s2><s5>12</s5></fC03><fC03 i1="08" i2="X" l="ENG"><s0>Optically active copolymer</s0><s2>NK</s2><s5>12</s5></fC03><fC03 i1="08" i2="X" l="SPA"><s0>Copolímero ópticamente activo</s0><s2>NK</s2><s5>12</s5></fC03><fC03 i1="09" i2="X" l="FRE"><s0>Copolymère aliphatique</s0><s2>NK</s2><s5>13</s5></fC03><fC03 i1="09" i2="X" l="ENG"><s0>Aliphatic copolymer</s0><s2>NK</s2><s5>13</s5></fC03><fC03 i1="09" i2="X" l="SPA"><s0>Copolímero alifático</s0><s2>NK</s2><s5>13</s5></fC03><fC03 i1="10" i2="X" l="FRE"><s0>Polymère monodispersé</s0><s5>14</s5></fC03><fC03 i1="10" i2="X" l="ENG"><s0>Monodispersed polymer</s0><s5>14</s5></fC03><fC03 i1="10" i2="X" l="SPA"><s0>Polímero monodispersado</s0><s5>14</s5></fC03><fC03 i1="11" i2="X" l="FRE"><s0>Préparation</s0><s5>15</s5></fC03><fC03 i1="11" i2="X" l="ENG"><s0>Preparation</s0><s5>15</s5></fC03><fC03 i1="11" i2="X" l="SPA"><s0>Preparación</s0><s5>15</s5></fC03><fC03 i1="12" i2="X" l="FRE"><s0>Propriété traction</s0><s5>17</s5></fC03><fC03 i1="12" i2="X" l="ENG"><s0>Tensile property</s0><s5>17</s5></fC03><fC03 i1="12" i2="X" l="SPA"><s0>Propiedad tracción</s0><s5>17</s5></fC03><fC03 i1="13" i2="X" l="FRE"><s0>Propriété rhéologique</s0><s5>18</s5></fC03><fC03 i1="13" i2="X" l="ENG"><s0>Rheological properties</s0><s5>18</s5></fC03><fC03 i1="13" i2="X" l="SPA"><s0>Propiedad reológica</s0><s5>18</s5></fC03><fC03 i1="14" i2="X" l="FRE"><s0>Viscoélasticité</s0><s5>19</s5></fC03><fC03 i1="14" i2="X" l="ENG"><s0>Viscoelasticity</s0><s5>19</s5></fC03><fC03 i1="14" i2="X" l="SPA"><s0>Viscoelasticidad</s0><s5>19</s5></fC03><fC03 i1="15" i2="X" l="FRE"><s0>Etat fondu</s0><s5>20</s5></fC03><fC03 i1="15" i2="X" l="ENG"><s0>Molten state</s0><s5>20</s5></fC03><fC03 i1="15" i2="X" l="SPA"><s0>Estado fundido</s0><s5>20</s5></fC03><fC03 i1="16" i2="X" l="FRE"><s0>Etude expérimentale</s0><s5>22</s5></fC03><fC03 i1="16" i2="X" l="ENG"><s0>Experimental study</s0><s5>22</s5></fC03><fC03 i1="16" i2="X" l="SPA"><s0>Estudio experimental</s0><s5>22</s5></fC03><fC03 i1="17" i2="X" l="FRE"><s0>Butyrolactone copolymère</s0><s2>NK</s2><s4>INC</s4><s5>32</s5></fC03><fC03 i1="18" i2="X" l="FRE"><s0>Viscosité complexe</s0><s4>INC</s4><s5>33</s5></fC03><fC07 i1="01" i2="X" l="FRE"><s0>Lactone copolymère</s0><s2>NK</s2><s5>10</s5></fC07><fC07 i1="01" i2="X" l="ENG"><s0>Lactone copolymer</s0><s2>NK</s2><s5>10</s5></fC07><fC07 i1="01" i2="X" l="SPA"><s0>Lactona copolímero</s0><s2>NK</s2><s5>10</s5></fC07><fC07 i1="02" i2="X" l="FRE"><s0>Propriété mécanique</s0><s5>16</s5></fC07><fC07 i1="02" i2="X" l="ENG"><s0>Mechanical properties</s0><s5>16</s5></fC07><fC07 i1="02" i2="X" l="SPA"><s0>Propiedad mecánica</s0><s5>16</s5></fC07><fN21><s1>231</s1></fN21><fN44 i1="01"><s1>PSI</s1></fN44><fN82><s1>PSI</s1></fN82></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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