Linked Life Data

19154127

Source:http://linkedlifedata.com/resource/pubmed/id/19154127

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2009-3-9
pubmed:abstractText
Transverse and longitudinal relaxation times of water protons were measured and magnetization transfer experiments were performed on cross-linked amphoteric poly(amidoamine)s containing different proportions of agmatine side groups swollen in buffer media with pH values in the 1.4-8.5 range in order to obtain information on water/polymer interactions as a function of pH and polymer composition. The experimental results indicated that water interacts with polymer chains mainly via hydrogen bonding to carboxylate groups and via proton exchange with amino groups. The introduction of agmatine in the polymer disfavors water/polymer interactions possibly because of polymer structural changes and competing electrostatic interactions with carboxylate groups.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0743-7463
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2449-55
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Effect of pH on water proton NMR relaxation in agmatine-containing poly(amidoamine) hydrogels.
pubmed:affiliation
Istituto per i Processi Chimico-Fisici del CNR, Area della Ricerca di Pisa, via G. Moruzzi 1, 56124 Pisa, Italy.
pubmed:publicationType
Journal Article