Document Detail

Formation of viscoelastic protein droplets on a chemically functionalized surface.
MedLine Citation:
PMID:  17602524     Owner:  NLM     Status:  MEDLINE    
Droplet formation during adsorption of the protein lactoferrin from an aqueous solution on a surface functionalized by plasma deposited poly(acrylic acid) is studied using quartz crystal microbalance and atomic force microscopy. The formation of protein droplets is particularly favored at pH values close to the isoelectric point of lactoferrin, where the molecules carry little excess charge and intermolecular attraction exceeds the molecule-surface interaction. By combining topographic data with information on the system dynamics, it is possible to describe the viscoelastic properties of the adsorbate within a quantitative model for nonhomogeneous layers.
S Belegrinou; I Mannelli; L Sirghi; F Bretagnol; A Valsesia; H Rauscher; F Rossi
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Publication Detail:
Type:  Letter     Date:  2007-06-29
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  111     ISSN:  1520-6106     ISO Abbreviation:  J Phys Chem B     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-07-26     Completed Date:  2007-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8713-6     Citation Subset:  IM    
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MeSH Terms
Hydrogen-Ion Concentration
Lactoferrin / chemistry*
Microscopy, Atomic Force
Solutions / chemistry
Surface Properties
Water / chemistry*
Reg. No./Substance:
0/Lactoferrin; 0/Solutions; 14808-60-7/Quartz; 7732-18-5/Water

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