| Modifying fragility and collective motion in polymer melts with nanoparticles. | |
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MedLine Citation:
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PMID: 21469879 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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We investigate the impact of nanoparticles (NP) on the fragility and cooperative stringlike motion in a model glass-forming polymer melt by molecular dynamics simulation. The NP cause significant changes to both the fragility and the average length of stringlike motion, where the effect depends on the NP-polymer interaction and NP concentration. We interpret these changes via the Adam-Gibbs (AG) theory, assuming the strings can be directly identified with the abstract "cooperatively rearranging regions" of AG. Our findings indicate that fragility is primarily a measure of the temperature dependence of the cooperativity of molecular motion. |
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Authors:
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Francis W Starr; Jack F Douglas |
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Publication Detail:
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Type: Journal Article Date: 2011-03-15 |
Journal Detail:
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Title: Physical review letters Volume: 106 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-04-07 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 115702 Citation Subset: IM |
Affiliation:
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Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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