Document Detail


Dendritic Brushes under Good Solvent Conditions: A Simulation Study.
MedLine Citation:
PMID:  23134236     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The structural properties of polymer brushes, formed by dendron polymers up to the third generation, were studied by means of Brownian dynamics simulations for the macroscopic state of good solvent. The distributions of polymer units, of the free-ends, of the dendrons centers of mass and of the units of every dendritic generation and the radii of gyration necessary for the understanding of the internal stratification of brushes were calculated. Previous self consistent field theory numerical simulations of dendritic brushes of first generation suggested that at high grafting densities two kind of populations are evident, one of short dendrons having weakly extended spacers and another with tall dendrons having strongly stretched spacers. The present Brownian dynamics calculations provided a more complicated picture of dendritic brushes, revealing different populations of short, tall and in some cases intermediate type of dendrons, depending on the dendron generation and spacer length. The scaling dependence of the height and the span of the dendritic brush on the grafting density and other parameters were found to be in very good agreement with existing theoretical results for good solvents.
Authors:
Leonidas N Gergidis; Andreas Kalogirou; Costas Hristos Vlahos
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-7
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  -     ISSN:  1520-5827     ISO Abbreviation:  Langmuir     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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