Dielectric relaxation spectrum of poly (ε-caprolactone) networks hydrophilized by copolymerization with 2-hydroxyethyl acrylate
The dielectric relaxation spectrum of polycaprolactone (PCL) networks hydrophilized with different amounts of 2-hydroxyethyl acrylate (HEA) is investigated. PCL is a semicrystalline polyester with a complex relaxation spectrum that includes the main alpha relaxation and two secondary modes (beta, ga...
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| Veröffentlicht in: | The European physical journal. E, Soft matter and biological physics Soft matter and biological physics, 2007-04, Vol.22 (4), p.293-302 |
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| container_title | The European physical journal. E, Soft matter and biological physics |
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| creator | SERRA, R. Sabater I IVIRICO, J. L. Escobar DUENAS, J. M. Meseguer BALADO, A. Andrio RIBELLES, J. L. Gomez SANCHEZ, M. Salmeron |
| description | The dielectric relaxation spectrum of polycaprolactone (PCL) networks hydrophilized with different amounts of 2-hydroxyethyl acrylate (HEA) is investigated. PCL is a semicrystalline polyester with a complex relaxation spectrum that includes the main alpha relaxation and two secondary modes (beta, gamma) at lower temperatures. The overlapping of the different relaxational modes was split by using several Havriliak-Negami functions. Crosslinking the material modifies the dynamics of the main relaxation process as reflected by the parameters that characterize the Vogel behavior of the process and the dynamic fragility. The incorporation of HEA units in the network results in a material with microphase separation: two alpha processes are detected, the one corresponding to the PCL chains and the new one associated to nanometric regions that contain different amount of both comonomers. The incorporation of the HEA units in the system involves the presence of a new beta(sw) relaxation due to the link of two side chains by water molecules through hydrogen bonding. |
| doi_str_mv | 10.1140/epje/e2007-00036-7 |
| format | Article |
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Sabater I ; IVIRICO, J. L. Escobar ; DUENAS, J. M. Meseguer ; BALADO, A. Andrio ; RIBELLES, J. L. Gomez ; SANCHEZ, M. Salmeron</creator><creatorcontrib>SERRA, R. Sabater I ; IVIRICO, J. L. Escobar ; DUENAS, J. M. Meseguer ; BALADO, A. Andrio ; RIBELLES, J. L. Gomez ; SANCHEZ, M. Salmeron</creatorcontrib><description>The dielectric relaxation spectrum of polycaprolactone (PCL) networks hydrophilized with different amounts of 2-hydroxyethyl acrylate (HEA) is investigated. PCL is a semicrystalline polyester with a complex relaxation spectrum that includes the main alpha relaxation and two secondary modes (beta, gamma) at lower temperatures. The overlapping of the different relaxational modes was split by using several Havriliak-Negami functions. Crosslinking the material modifies the dynamics of the main relaxation process as reflected by the parameters that characterize the Vogel behavior of the process and the dynamic fragility. The incorporation of HEA units in the network results in a material with microphase separation: two alpha processes are detected, the one corresponding to the PCL chains and the new one associated to nanometric regions that contain different amount of both comonomers. The incorporation of the HEA units in the system involves the presence of a new beta(sw) relaxation due to the link of two side chains by water molecules through hydrogen bonding.</description><identifier>ISSN: 1292-8941</identifier><identifier>EISSN: 1292-895X</identifier><identifier>DOI: 10.1140/epje/e2007-00036-7</identifier><identifier>PMID: 17415514</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Acrylates - chemistry ; Applied sciences ; Biocompatible Materials - chemistry ; Biophysics ; Calorimetry, Differential Scanning ; Chains ; Chemical bonds ; Computer Simulation ; Condensed matter physics ; Copolymerization ; Cross-Linking Reagents - chemistry ; Crosslinking ; Dielectric relaxation ; Exact sciences and technology ; Fragility ; Hydrogen Bonding ; Hydroxyethyl acrylate ; Models, Chemical ; Physicochemistry of polymers ; Polycaprolactone ; Polyesters - chemistry ; Polymers and radiations ; Properties and characterization ; Spectrum Analysis ; Temperature ; Water chemistry</subject><ispartof>The European physical journal. 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The overlapping of the different relaxational modes was split by using several Havriliak-Negami functions. Crosslinking the material modifies the dynamics of the main relaxation process as reflected by the parameters that characterize the Vogel behavior of the process and the dynamic fragility. The incorporation of HEA units in the network results in a material with microphase separation: two alpha processes are detected, the one corresponding to the PCL chains and the new one associated to nanometric regions that contain different amount of both comonomers. The incorporation of the HEA units in the system involves the presence of a new beta(sw) relaxation due to the link of two side chains by water molecules through hydrogen bonding.</description><subject>Acrylates - chemistry</subject><subject>Applied sciences</subject><subject>Biocompatible Materials - chemistry</subject><subject>Biophysics</subject><subject>Calorimetry, Differential Scanning</subject><subject>Chains</subject><subject>Chemical bonds</subject><subject>Computer Simulation</subject><subject>Condensed matter physics</subject><subject>Copolymerization</subject><subject>Cross-Linking Reagents - chemistry</subject><subject>Crosslinking</subject><subject>Dielectric relaxation</subject><subject>Exact sciences and technology</subject><subject>Fragility</subject><subject>Hydrogen Bonding</subject><subject>Hydroxyethyl acrylate</subject><subject>Models, Chemical</subject><subject>Physicochemistry of polymers</subject><subject>Polycaprolactone</subject><subject>Polyesters - chemistry</subject><subject>Polymers and radiations</subject><subject>Properties and characterization</subject><subject>Spectrum Analysis</subject><subject>Temperature</subject><subject>Water chemistry</subject><issn>1292-8941</issn><issn>1292-895X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdkc1qFjEUhoMotlZvwIUERNHF2PxnZin1FwpuFNyFNHPCl8_MZEwytNOVN-VteE3O94MFVzmE5305hwehp5S8oVSQc5i2cA6MEN0QQrhq9D10SlnHmraT3-__mwU9QY9K2a7QGuMP0QnVgkpJxSn69S5ABFdzcDhDtDe2hjTiMu3-5gEnj6cUF_zqz-_G2SmnaF1NI7zGI9TrlH8UvFn6nKZNiOEWeny1YJd2kQFyuD20XYe6wazZgzcL1M0SsXV5ibbCY_TA21jgyfE9Q98-vP968am5_PLx88Xby8Zx2dVGCEVZ76UXWgrlutZ58AJIZz2R3LbcSdcr5ljPJdfcCelJxzlRTPRc9JafoZeH3vWGnzOUaoZQHMRoR0hzMZpIRYVuV_D5f-A2zXlcdzNMKdEq1apupdiBcjmVksGbKYfB5sVQYnZ2zM6O2dsxeztGr6Fnx-r5aoD-LnLUsQIvjoAtzkaf7ehCuePaltJOS_4XXgOcPg</recordid><startdate>20070401</startdate><enddate>20070401</enddate><creator>SERRA, R. 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Sabater I</creatorcontrib><creatorcontrib>IVIRICO, J. L. Escobar</creatorcontrib><creatorcontrib>DUENAS, J. M. Meseguer</creatorcontrib><creatorcontrib>BALADO, A. Andrio</creatorcontrib><creatorcontrib>RIBELLES, J. L. Gomez</creatorcontrib><creatorcontrib>SANCHEZ, M. Salmeron</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The European physical journal. E, Soft matter and biological physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SERRA, R. Sabater I</au><au>IVIRICO, J. L. Escobar</au><au>DUENAS, J. M. Meseguer</au><au>BALADO, A. Andrio</au><au>RIBELLES, J. L. Gomez</au><au>SANCHEZ, M. Salmeron</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dielectric relaxation spectrum of poly (ε-caprolactone) networks hydrophilized by copolymerization with 2-hydroxyethyl acrylate</atitle><jtitle>The European physical journal. E, Soft matter and biological physics</jtitle><addtitle>Eur Phys J E Soft Matter</addtitle><date>2007-04-01</date><risdate>2007</risdate><volume>22</volume><issue>4</issue><spage>293</spage><epage>302</epage><pages>293-302</pages><issn>1292-8941</issn><eissn>1292-895X</eissn><abstract>The dielectric relaxation spectrum of polycaprolactone (PCL) networks hydrophilized with different amounts of 2-hydroxyethyl acrylate (HEA) is investigated. PCL is a semicrystalline polyester with a complex relaxation spectrum that includes the main alpha relaxation and two secondary modes (beta, gamma) at lower temperatures. The overlapping of the different relaxational modes was split by using several Havriliak-Negami functions. Crosslinking the material modifies the dynamics of the main relaxation process as reflected by the parameters that characterize the Vogel behavior of the process and the dynamic fragility. The incorporation of HEA units in the network results in a material with microphase separation: two alpha processes are detected, the one corresponding to the PCL chains and the new one associated to nanometric regions that contain different amount of both comonomers. The incorporation of the HEA units in the system involves the presence of a new beta(sw) relaxation due to the link of two side chains by water molecules through hydrogen bonding.</abstract><cop>Heidelberg</cop><pub>Springer</pub><pmid>17415514</pmid><doi>10.1140/epje/e2007-00036-7</doi><tpages>10</tpages></addata></record> |
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| subjects | Acrylates - chemistry Applied sciences Biocompatible Materials - chemistry Biophysics Calorimetry, Differential Scanning Chains Chemical bonds Computer Simulation Condensed matter physics Copolymerization Cross-Linking Reagents - chemistry Crosslinking Dielectric relaxation Exact sciences and technology Fragility Hydrogen Bonding Hydroxyethyl acrylate Models, Chemical Physicochemistry of polymers Polycaprolactone Polyesters - chemistry Polymers and radiations Properties and characterization Spectrum Analysis Temperature Water chemistry |
| title | Dielectric relaxation spectrum of poly (ε-caprolactone) networks hydrophilized by copolymerization with 2-hydroxyethyl acrylate |
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