Linked Life Data

16314165

Source:http://linkedlifedata.com/resource/pubmed/id/16314165

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2005-11-29
pubmed:abstractText
The on-line coupling of comprehensive two-dimensional liquid chromatography (liquid chromatography x size-exclusion chromatography, LC x SEC) and infrared (IR) spectroscopy has been realized by means of an IR flow cell. The system has been assessed by the functional-group analysis of a series of styrene-methylacrylate (SMA) copolymers with varying styrene content. Ultraviolet (UV) detection was used as a detection technique to verify the detection with IR. The LC x SEC-IR functional-group contour plots (comprehensive chromatograms) obtained for styrene were in agreement with the contour plots constructed from the UV signal. In addition, contour plots can be obtained from non-UV-active groups. One such plot, for the carbonyl-stretching vibration of methylacrylate (MA), is shown. Selective detection of MA proved possible using flow cell IR detection. The combination of the contour plots for styrene and MA allowed a full characterization of the copolymer and it was revealed that the present series of SMA copolymers exhibited homogeneous chemical-composition distributions (CCDs). In addition, commercially available fast-SEC columns have been assessed in this study with respect to their potential to serve as second-dimension separation columns.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0021-9673
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
1098
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
104-10
pubmed:dateRevised
2009-1-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Comprehensive two-dimensional liquid chromatography with on-line Fourier-transform-infrared-spectroscopy detection for the characterization of copolymers.
pubmed:affiliation
TNO Nutrition and Food Research, Packaging Research Department, Utrechtseweg 48, 3704 HE Zeist, The Netherlands. sander.kok@ge.com
pubmed:publicationType
Journal Article, Comparative Study