Crystalline β-structure of PHBV grown epitaxially on silicate layers of MMT
The poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/montmorillonite(MMT) nanocomposites were investigated by wide-angle X-ray scattering (WAXS). The aim of the investigation was solution intercalation of MMT with PHBV. Beside the usual orthorhombic unit cell, a stable pseudohexagonal β-structure...
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| Veröffentlicht in: | Journal of polymer science. Part B, Polymer physics Polymer physics, 2009-04, Vol.47 (8), p.751-755 |
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| container_title | Journal of polymer science. Part B, Polymer physics |
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| creator | Ublekov, F Baldrian, J Nedkov, E |
| description | The poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/montmorillonite(MMT) nanocomposites were investigated by wide-angle X-ray scattering (WAXS). The aim of the investigation was solution intercalation of MMT with PHBV. Beside the usual orthorhombic unit cell, a stable pseudohexagonal β-structure of PHBV was obtained. Well known β-structure has one common WAXS reflection (d = 0.480 nm), which corresponds to the mean distance of PHBV chains in the pseudohexagonal structure. The new β-structure has two diffraction peaks in the WAXS pattern. It is a three-dimensionally ordered crystalline structure oriented in parallel with the silica layers of MMT. The new polymorphic form is supposed to be growing on the layers of MMT. Its layers serve as primary nucleation centers for epitaxial growth of the β-structure. After annealing, this polymorphic form of PHBV disappears and it is transformed into the more stable α-form leading to an enhanced total crystallinity of the polymer comprised in the nanocomposite. |
| doi_str_mv | 10.1002/polb.21679 |
| format | Article |
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The aim of the investigation was solution intercalation of MMT with PHBV. Beside the usual orthorhombic unit cell, a stable pseudohexagonal β-structure of PHBV was obtained. Well known β-structure has one common WAXS reflection (d = 0.480 nm), which corresponds to the mean distance of PHBV chains in the pseudohexagonal structure. The new β-structure has two diffraction peaks in the WAXS pattern. It is a three-dimensionally ordered crystalline structure oriented in parallel with the silica layers of MMT. The new polymorphic form is supposed to be growing on the layers of MMT. Its layers serve as primary nucleation centers for epitaxial growth of the β-structure. 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Part B, Polymer physics</title><addtitle>J. Polym. Sci. B Polym. Phys</addtitle><description>The poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/montmorillonite(MMT) nanocomposites were investigated by wide-angle X-ray scattering (WAXS). The aim of the investigation was solution intercalation of MMT with PHBV. Beside the usual orthorhombic unit cell, a stable pseudohexagonal β-structure of PHBV was obtained. Well known β-structure has one common WAXS reflection (d = 0.480 nm), which corresponds to the mean distance of PHBV chains in the pseudohexagonal structure. The new β-structure has two diffraction peaks in the WAXS pattern. It is a three-dimensionally ordered crystalline structure oriented in parallel with the silica layers of MMT. The new polymorphic form is supposed to be growing on the layers of MMT. Its layers serve as primary nucleation centers for epitaxial growth of the β-structure. After annealing, this polymorphic form of PHBV disappears and it is transformed into the more stable α-form leading to an enhanced total crystallinity of the polymer comprised in the nanocomposite.</description><subject>Applied sciences</subject><subject>biodegradable</subject><subject>biopolymers</subject><subject>clay</subject><subject>Composites</subject><subject>epitaxially grown</subject><subject>Exact sciences and technology</subject><subject>Forms of application and semi-finished materials</subject><subject>nanocomposites</subject><subject>nucleation</subject><subject>PHBV</subject><subject>poly(3-hydroxybutyrate-co-3-hydroxyvalerate)</subject><subject>Polymer industry, paints, wood</subject><subject>Technology of polymers</subject><subject>WAXS</subject><subject>β-Structure</subject><issn>0887-6266</issn><issn>1099-0488</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp90MtOGzEYBWALtRIp7aYv0Nm0C6QJvmTs8bKES5ACidoAEhvL9vxGbs1MsCeCeS0ehGdi0qEsWXnh7xzZB6GvBI8JxvRg3QQzpoQLuYNGBEuZ40lZfkAjXJYi55TzXfQppT8Y93eFHKH5NHap1SH4GrLnpzy1cWPbTYSscdlydniV3cbmoc5g7Vv96HvYZU2dJR-81S1kQXcQ0xafn68-o49OhwRfXs89dHlyvJrO8vni9Gz6c57bCRMy5xOjsQNhhARbOmmxE0ArzCogxhBTVUxUxHFhqCGVxRI0AyNEIVlhXYHZHvox9K5jc7-B1Ko7nyyEoGtoNkkxxgUnhPVwf4A2NilFcGod_Z2OnSJYbQdT28HUv8F6_P21VSerg4u6tj69JSihspgI3jsyuAcfoHunUS0X88P_3fmQ8amFx7eMjn8VF0wU6vriVImb8pe4pit11Ptvg3e6Ufo29u-4_E0xYZj0HyulZC_x8pSv</recordid><startdate>20090415</startdate><enddate>20090415</enddate><creator>Ublekov, F</creator><creator>Baldrian, J</creator><creator>Nedkov, E</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20090415</creationdate><title>Crystalline β-structure of PHBV grown epitaxially on silicate layers of MMT</title><author>Ublekov, F ; Baldrian, J ; Nedkov, E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4379-64ba0fe7b79ec8f9c0f7e2d03de1bb1bdd37d1f67b2b1dc09ea3eb775935cf503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>biodegradable</topic><topic>biopolymers</topic><topic>clay</topic><topic>Composites</topic><topic>epitaxially grown</topic><topic>Exact sciences and technology</topic><topic>Forms of application and semi-finished materials</topic><topic>nanocomposites</topic><topic>nucleation</topic><topic>PHBV</topic><topic>poly(3-hydroxybutyrate-co-3-hydroxyvalerate)</topic><topic>Polymer industry, paints, wood</topic><topic>Technology of polymers</topic><topic>WAXS</topic><topic>β-Structure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ublekov, F</creatorcontrib><creatorcontrib>Baldrian, J</creatorcontrib><creatorcontrib>Nedkov, E</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of polymer science. Part B, Polymer physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ublekov, F</au><au>Baldrian, J</au><au>Nedkov, E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Crystalline β-structure of PHBV grown epitaxially on silicate layers of MMT</atitle><jtitle>Journal of polymer science. Part B, Polymer physics</jtitle><addtitle>J. Polym. Sci. B Polym. Phys</addtitle><date>2009-04-15</date><risdate>2009</risdate><volume>47</volume><issue>8</issue><spage>751</spage><epage>755</epage><pages>751-755</pages><issn>0887-6266</issn><eissn>1099-0488</eissn><coden>JPLPAY</coden><abstract>The poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/montmorillonite(MMT) nanocomposites were investigated by wide-angle X-ray scattering (WAXS). The aim of the investigation was solution intercalation of MMT with PHBV. Beside the usual orthorhombic unit cell, a stable pseudohexagonal β-structure of PHBV was obtained. Well known β-structure has one common WAXS reflection (d = 0.480 nm), which corresponds to the mean distance of PHBV chains in the pseudohexagonal structure. The new β-structure has two diffraction peaks in the WAXS pattern. It is a three-dimensionally ordered crystalline structure oriented in parallel with the silica layers of MMT. The new polymorphic form is supposed to be growing on the layers of MMT. Its layers serve as primary nucleation centers for epitaxial growth of the β-structure. After annealing, this polymorphic form of PHBV disappears and it is transformed into the more stable α-form leading to an enhanced total crystallinity of the polymer comprised in the nanocomposite.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/polb.21679</doi><tpages>5</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences biodegradable biopolymers clay Composites epitaxially grown Exact sciences and technology Forms of application and semi-finished materials nanocomposites nucleation PHBV poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Polymer industry, paints, wood Technology of polymers WAXS β-Structure |
| title | Crystalline β-structure of PHBV grown epitaxially on silicate layers of MMT |
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