Linked Life Data

17439259

Source:http://linkedlifedata.com/resource/pubmed/id/17439259

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2007-5-15
pubmed:abstractText
Sodium polyacrylate is well known for its application as a scale inhibitor in common household products, and the effects of both monovalent and divalent metal cations on its structure have been covered by a range of previous publications. In the present article, we extend this work by using solvent relaxation NMR to look at the adsorption of the polyelectrolyte onto both positively and negatively charged silica and how this is altered by calcium chloride. In the anionic case, we found that polyacrylate adsorption was predictably very weak, and interestingly, perhaps counterintuitively, it was further reduced by calcium ions. This is probably linked to NaPA-Ca2+ binding, which changes the conformation and charge of the polyelectrolyte. In contrast, NaPA adsorbs very strongly on cationic silica, to the point that precipitation often occurs, particularly on addition of salt.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
May
pubmed:issn
0743-7463
pubmed:author
pubmed:issnType
Print
pubmed:day
22
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6191-7
pubmed:year
2007
pubmed:articleTitle
Sodium polyacrylate adsorption onto anionic and cationic silica in the presence of salts.
pubmed:affiliation
School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
pubmed:publicationType
Journal Article