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dc.contributor.author
Vega, Daniel Alberto  
dc.contributor.author
Milner, Scott T.  
dc.date.available
2019-02-21T14:29:09Z  
dc.date.issued
2007-12  
dc.identifier.citation
Vega, Daniel Alberto; Milner, Scott T.; Shear damping function measurements for branched polymers; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 45; 23; 12-2007; 3117-3136  
dc.identifier.issn
0887-6266  
dc.identifier.uri
http://hdl.handle.net/11336/70601  
dc.description.abstract
We present results for step-strain experiments and the resulting damping functions of polyethylene blends of different structures, including solutions of linear, star and comb polymers. Remarkably, an entangled melt of combs exhibits a damping function close to that for entangled linear chains. Diluting the combs with faster-relaxing material leads to a more nearly constant damping function. We find similar behavior for blends of commercial low density polyethylene LDPE. Our results suggest a simple picture: on timescales relevant to typical damping-function experiments, the rheologically active portions of our PE combs as well as commercial LDPE are essentially chain backbones. When strongly entangled, these exhibit the Doi-Edwards damping function; when diluted, the damping function tends toward the result for unentangled chains described by the Rouse model - namely, no damping. © 2007 Wiley Periodicals, Inc.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
John Wiley & Sons Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Branched  
dc.subject
Rheology  
dc.subject
Star Polymers  
dc.subject.classification
Física de los Materiales Condensados  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Shear damping function measurements for branched polymers  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-02-12T16:55:19Z  
dc.journal.volume
45  
dc.journal.number
23  
dc.journal.pagination
3117-3136  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Nueva York  
dc.description.fil
Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. ExxonMobil Research and Engineering; Estados Unidos  
dc.description.fil
Fil: Milner, Scott T.. ExxonMobil Research and Engineering; Estados Unidos  
dc.journal.title
Journal of Polymer Science Part B: Polymer Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1002/polb.21276  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.21276