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Bengt Wittgren

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TOP 3
Anna Viridén; Bengt Wittgren; Susanna Abrahmsén-Alami; Anette Larsson
Release of theophylline and carbamazepine from matrix tablets--consequences of HPMC chemical heterogeneity.
Anna Viridén; Bengt Wittgren; Anette Larsson
The consequence of the chemical composition of HPMC in matrix tablets on the release behaviour of model drug substances having different solubility.
Anna Viridén; Anette Larsson; Herje Schagerlöf; Bengt Wittgren
Model drug release from matrix tablets composed of HPMC with different substituent heterogeneity.

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All Publications

2011: Anna Viridén; Bengt Wittgren; Susanna Abrahmsén-Alami; Anette Larsson
Release of theophylline and carbamazepine from matrix tablets--consequences of HPMC chemical heterogeneity.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft für Pharmazeutische Verfahrenstechnik e.V 2011;78(3):470-9.
2011: Anna Viridén; Bengt Wittgren; Anette Larsson
The consequence of the chemical composition of HPMC in matrix tablets on the release behaviour of model drug substances having different solubility.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft für Pharmazeutische Verfahrenstechnik e.V 2011;77(1):99-110.
2010: Anna Viridén; Anette Larsson; Herje Schagerlöf; Bengt Wittgren
Model drug release from matrix tablets composed of HPMC with different substituent heterogeneity.
International journal of pharmaceutics 2010;401(1-2):60-7.
2010: Anna Viridén; Anette Larsson; Bengt Wittgren
The effect of substitution pattern of HPMC on polymer release from matrix tablets.
International journal of pharmaceutics 2010;389(1-2):147-56.
2009: Anna Viridén; Bengt Wittgren; Thomas Andersson; Susanna Abrahmsén-Alami; Anette Larsson
Influence of substitution pattern on solution behavior of hydroxypropyl methylcellulose.
Biomacromolecules 2009;10(3):522-9.
2009: Anna Viridén; Bengt Wittgren; Thomas Andersson; Anette Larsson
The effect of chemical heterogeneity of HPMC on polymer release from matrix tablets.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences 2009;36(4-5):392-400.
2009: Anna Viridén; Bengt Wittgren; Anette Larsson
Investigation of critical polymer properties for polymer release and swelling of HPMC matrix tablets.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences 2009;36(2-3):297-309.
2009: Anna Körner; Lennart Piculell; Frida Iselau; Bengt Wittgren; Anette Larsson
Influence of different polymer types on the overall release mechanism in hydrophilic matrix tablets.
Molecules (Basel, Switzerland) 2009;14(8):2699-716.
2006: Herje Schagerlöf; Marika Johansson; Sara Richardson; Gunnar Brinkmalm; Bengt Wittgren; Folke Tjerneld
Substituent distribution and clouding behavior of hydroxypropyl methyl cellulose analyzed using enzymatic degradation.
Biomacromolecules 2006;7(12):3474-81.
2006: Mats Leeman; Karl-Gustav Wahlund; Bengt Wittgren
Programmed cross flow asymmetrical flow field-flow fractionation for the size separation of pullulans and hydroxypropyl cellulose.
Journal of chromatography. A 2006;1134(1-2):236-45.
2006: Fiona Fitzpatrick; Herje Schagerlöf; Thomas Andersson; Sara Richardson; Folke Tjerneld; Karl-Gustav Wahlund; Bengt Wittgren
NMR, cloud-point measurements and enzymatic depolymerization: complementary tools to investigate substituent patterns in modified celluloses.
Biomacromolecules 2006;7(10):2909-17.
2006: Herje Schagerlöf; Sara Richardson; Dane Momcilovic; Gunnar Brinkmalm; Bengt Wittgren; Folke Tjerneld
Characterization of chemical substitution of hydroxypropyl cellulose using enzymatic degradation.
Biomacromolecules 2006;7(1):80-5.
2005: Dane Momcilovic; Herje Schagerlöf; Bengt Wittgren; Karl-Gustav Wahlund; Gunnar Brinkmalm
Improved chemical analysis of cellulose ethers using dialkylamine derivatization and mass spectrometry.
Biomacromolecules 2005;6(5):2793-9.
2005: Bengt Wittgren; Morgan Stefansson; Bedrich Porsch
Interactions between sodium dodecyl sulphate and non-ionic cellulose derivatives studied by size exclusion chromatography with online multi-angle light scattering and refractometric detection.
Journal of chromatography. A 2005;1082(2):166-75.
2005: Anna Körner; Anette Larsson; Lennart Piculell; Bengt Wittgren
Molecular information on the dissolution of polydisperse polymers: Mixtures of long and short poly(ethylene oxide).
The journal of physical chemistry. B 2005;109(23):11530-7.
2005: Dane Momcilovic; Herje Schagerlöf; Daniel Röme; Magnus Jörntén-Karlsson; Karl-Erik Karlsson; Bengt Wittgren; Folke Tjerneld; Karl-Gustav Wahlund; Gunnar Brinkmalm
Derivatization using dimethylamine for tandem mass spectrometric structure analysis of enzymatically and acidically depolymerized methyl cellulose.
Analytical chemistry 2005;77(9):2948-59.
2005: Anna Körner; Anette Larsson; Lennart Piculell; Bengt Wittgren
Tuning the polymer release from hydrophilic matrix tablets by mixing short and long matrix polymers.
Journal of pharmaceutical sciences 2005;94(4):759-69.
2005: Bedrich Porsch; Anette Welinder; Anna Körner; Bengt Wittgren
Distribution analysis of ultra-high molecular mass poly(ethylene oxide) containing silica particles by size-exclusion chromatography with dual light-scattering and refractometric detection.
Journal of chromatography. A 2005;1068(2):249-60.
2005: Dane Momcilovic; Karl-Gustav Wahlund; Bengt Wittgren; Gunnar Brinkmalm
Improved matrix-assisted laser desorption/ionisation sample preparation of a partially depolymerised cellulose derivative by continuous spray deposition and interfacing with size-exclusion chromatography.
Rapid communications in mass spectrometry : RCM 2005;19(7):947-54.
2004: Mats Andersson; Bengt Wittgren; Herje Schagerlöf; Dane Momcilovic; Karl-Gustav Wahlund
Size and structure characterization of ethylhydroxyethyl cellulose by the combination of field-flow fractionation with other techniques. Investigation of ultralarge components.
Biomacromolecules 2004;5(1):97-105.
2003: Sara Richardson; Thomas Andersson; Gunnar Brinkmalm; Bengt Wittgren
Analytical approaches to improved characterization of substitution in hydroxypropyl cellulose.
Analytical chemistry 2003;75(22):6077-83.
2003: Mats Andersson; Bengt Wittgren; Karl-Gustav Wahlund
Accuracy in multiangle light scattering measurements for molar mass and radius estimations. Model calculations and experiments.
Analytical chemistry 2003;75(16):4279-91.
2003: Bengt Wittgren; Anette Welinder; Bedrich Porsch
Molar mass characterization of cationic methyl methacrylate-ethyl acrylate copolymers using size-exclusion chromatography with online multi-angle light scattering and refractometric detection.
Journal of chromatography. A 2003;1002(1-2):101-9.
2003: Bengt Erlandsson; Bengt Wittgren; Gunnar Brinkmalm
Development of a size exclusion chromatography method for the determination of molar mass for poloxamers.
Journal of pharmaceutical and biomedical analysis 2003;31(5):845-58.
2003: Dane Momcilovic; Bengt Wittgren; Karl-Gustav Wahlund; Johan Karlsson; Gunnar Brinkmalm
Sample preparation effects in matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry of partially depolymerised methyl cellulose.
Rapid communications in mass spectrometry : RCM 2003;17(11):1116-24.
2003: Dane Momcilovic; Bengt Wittgren; Karl-Gustav Wahlund; Johan Karlsson; Gunnar Brinkmalm
Sample preparation effects in matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry of partially depolymerised carboxymethyl cellulose.
Rapid communications in mass spectrometry : RCM 2003;17(11):1107-15.
2002: Sara Richardson; Jon Lundqvist; Bengt Wittgren; Folke Tjerneld; Lo Gorton
Initial characterization of ethyl(hydroxyethyl) cellulose using enzymic degradation and chromatographic methods.
Biomacromolecules 2002;3(6):1359-63.
2002: Bedrich Porsch; Mats Andersson; Bengt Wittgren; Karl-Gustav Wahlund
Molecular mass distribution analysis of ethyl(hydroxyethyl)cellulose by size-exclusion chromatography with dual light-scattering and refractometric detection.
Journal of chromatography. A 2002;946(1-2):69-81.
2002: Johan Karlsson; Dane Momcilovic; Bengt Wittgren; Martin Schülein; Folke Tjerneld; Gunnar Brinkmalm
Enzymatic degradation of carboxymethyl cellulose hydrolyzed by the endoglucanases Cel5A, Cel7B, and Cel45A from Humicola insolens and Cel7B, Cel12A and Cel45Acore from Trichoderma reesei.
Biopolymers 2002;63(1):32-40.
2001: Mats Andersson; Bengt Wittgren; Karl-Gustav Wahlund
Ultrahigh molar mass component detected in ethylhydroxyethyl cellulose by asymmetrical flow field-flow fractionation coupled to multiangle light scattering.
Analytical chemistry 2001;73(20):4852-61.