Separation of Poly(styrene-block-t-butyl methacrylate) Copolymers by Various Liquid Chromatography Techniques
Joint Authors
Šmigovec Ljubič, Tina
Pahovnik, David
Žagar, Ema
Žigon, Majda
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-12
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
The separation of a mixture of three poly(styrene-block-t-butyl methacrylate) copolymers (PS-b-PtBMA), consisting of polystyrene (PS) blocks of similar length and t-butyl methacrylate (PtBMA) blocks of different lengths, was performed using various chromatographic techniques, that is, a gradient liquid chromatography on reversed-phase (C18 and C8) and normal-phase columns, a liquid chromatography under critical conditions for polystyrene as well as a fully automated two-dimensional liquid chromatography that separates block copolymers by chemical composition in the first dimension and by molar mass in the second dimension.
The results show that a partial separation of the mixture of PS-b-PtBMA copolymers can be achieved only by gradient liquid chromatography on reversed-phase columns.
The coelution of the two block copolymers is ascribed to a much shorter PtBMA block length, compared to the PS block, as well as a small difference in the length of the PtBMA block in two of these copolymers, which was confirmed by SEC-MALS and NMR spectroscopy.
American Psychological Association (APA)
Šmigovec Ljubič, Tina& Pahovnik, David& Žigon, Majda& Žagar, Ema. 2012. Separation of Poly(styrene-block-t-butyl methacrylate) Copolymers by Various Liquid Chromatography Techniques. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-509291
Modern Language Association (MLA)
Šmigovec Ljubič, Tina…[et al.]. Separation of Poly(styrene-block-t-butyl methacrylate) Copolymers by Various Liquid Chromatography Techniques. The Scientific World Journal No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-509291
American Medical Association (AMA)
Šmigovec Ljubič, Tina& Pahovnik, David& Žigon, Majda& Žagar, Ema. Separation of Poly(styrene-block-t-butyl methacrylate) Copolymers by Various Liquid Chromatography Techniques. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-509291
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509291