Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/134823
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | Pérez, Ernesto | - |
dc.contributor.author | García-Peñas, A. | - |
dc.contributor.author | Arranz-Andrés, Javier | - |
dc.contributor.author | Gómez-Elvira, Javier | - |
dc.contributor.author | Gómez-Elvira González, José Manuel | - |
dc.contributor.author | Cerrada, María L. | - |
dc.date.accessioned | 2016-07-15T10:16:51Z | - |
dc.date.available | 2016-07-15T10:16:51Z | - |
dc.date.issued | 2016 | - |
dc.identifier | doi: 10.1016/j.polymer.2016.03.072 | - |
dc.identifier | issn: 0032-3861 | - |
dc.identifier.citation | Polymer 92: 164-169 (2016) | - |
dc.identifier.uri | http://hdl.handle.net/10261/134823 | - |
dc.description.abstract | A sample of isotactic poly-1-pentene has been synthesized by using a metallocene catalyst, and two specimens have been prepared displaying the most stable Form I of this polymer, reported to adopt a 3 helical conformation. The solid-state CNMR study of this helical form shows an exceptional splitting of the resonances, indicative of an important magnetic inequivalence in the unit cell. The maximum separation (amounting to 4.7 ppm) is obtained for carbon 2B: the methylene next to the terminal methyl in the lateral branch. This exceptional splitting is interpreted as originating from either intermolecular (packing) or intramolecular (conformational) differences (or both), leading to well non-equivalent sites for all the carbons. The comparative analysis of the relaxation times in the rotating frame between isotactic poly-1-pentene and isotactic polypropylene indicates that the two polymers display a rather similar relaxation behavior for both the crystalline and amorphous components. | - |
dc.description.sponsorship | The financial support of MINECO (project MAT2013-47972-C2-1-P) is gratefully acknowledged. A. García-Peñas is also grateful to MICINN for his FPI predoctoral grant. | - |
dc.publisher | Elsevier | - |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2013-47972-C2-1-P | - |
dc.rights | closedAccess | - |
dc.subject | Solid-state NMR | - |
dc.subject | Helical isotactic poly-1-pentene | - |
dc.subject | Magnetic inequivalence | - |
dc.title | The exceptional magnetic inequivalence in helical form i of poly-1-pentene | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1016/j.polymer.2016.03.072 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.polymer.2016.03.072 | - |
dc.date.updated | 2016-07-15T10:16:52Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | - |
dc.relation.csic | Sí | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003329 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
Aparece en las colecciones: | (ICTP) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
243
checked on 28-mar-2024
Download(s)
108
checked on 28-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.