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Division of Polymer Science

Department of Chemistry

and Polymer Science

University of Stellenbosch

Private Bag X1

7602 MATIELAND

South Africa


Telephone: +27 (21) 808 3172

 

 

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Mrs E Cooper

+27(21) 808 3172

 

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GPS Coordinates:

S 33° 55' 58" E 18° 51' 59"

Professor Harald Pasch

 

H Pasch

Sasol Research Chair in
Analytical Polymer Science

Office

Room 2002, Polymer Science Building

Tel: +27-21-808 3173

Email

 

Tertiary education

  • MSc (Organic Chemistry), Odessa State University, Odessa, Ukrain, 1976
  • PhD (Macromolecular Chemistry), German Academy of Sciences, Berlin, Germany, 1982
  • DSc (Habilitation, Macromolecular Chemistry), German Academy of Sciences, Berlin, Germany, 1987

Research activities

  • Development of analytical techniques for complex polymers
  • Multidimensional analytical techniques
  • Analytical techniques for combinatorial materials research
  • New techniques for polyolefin analysis
  • Synthesis and characterization of polymers with unusual architectures

Research description

Please see my research page

Selected publications

1.       H. Pasch, A. Pizzi, K. Rode: MALDI-TOF Mass Spectrometry  of Polyflavonoid Tannins. Polymer 42 (2001) 7531.

2.       T. Biela, A. Duda, S. Penczek, K. Rode, H. Pasch: Well-Defined Star Polylactides and Their Behaviour in Two-Dimensional Chromatography. J. Polym. Sci. A, Polym. Chem. 40 (2002) 2884.

3.       H. Pasch, P. Kilz: Fast Liquid Chromatography for High-Throughput Screening of Polymers. Macromol. Rapid Commun. 24 (2003) 104.

4.       T. Biela, A. Duda, K. Rode, H. Pasch: Characterization of star-shaped poly(l-lactide)s by liquid chromatography at critical conditions. Polymer 44 (2003) 1851.

5.       H. Pasch, M. Schrod: Preparation and Analysis of Phenol-Formaldehyde Resins by High-Throughput Techniques. Macromol. Rapid Commun. 25 (2004) 224.

6.       H. Pasch, M. Adler, F. Rittig, S. Becker: New Developments in Multidimensional Chromatography of Complex Polymers. Macromol. Rapid Commun. 26 (2005) 438.

7.       W. Hiller, A. Brüll, D. Argyropoulos, E. Hoffmann, H. Pasch: HPLC-NMR of Fatty Alcohol Ethoxylates. Magn. Res. Chem. 43 (2005) 729.

8.       Y. Liu, W. Radke, H. Pasch: Coil-Stretch Transition of High Molar Mass Polymers in Packed-Column Hydrodynamic Chromatography. Macromolecules 38 (2005) 7476.

9.       X. Wang, C.C. Rusa, M.A. Hunt, A.E. Tonelli, T. Macko, H. Pasch: Adsorption of Polyethylene and Polypropylene by Zeolites: Inside or Outside? Macromolecules 38 (2005) 10341.

10.     L.-C. Heinz, H. Pasch, High-Temperature Gradient HPLC for the Separation of Polyethylene-Polypropylene Blends. Polymer 46 (2005) 12040.

11.     Y. Liu, W. Radke, H. Pasch: Onset of the Chromatographic Mode Transition from Hydrodynamic Chromatography to Slalom Chromatography: An Effect of Polymer Stretching. Macromolecules 39 (2006) 2004.

12.     L.-C. Heinz, T. Macko, A. Williams, S. O'Donohue, H. Pasch: A New System for High-Temperature Gradient HPLC of  Polymers. The Column (electronic journal) 2006, Febr., 13-19.

13.     W. Hiller, H. Pasch, T. Macko, M. Hoffmann, J. Ganz, M. Spraul, U. Braumann, R. Streck, J. Mason, F. van Damme: On-line Coupling of High Temperature SEC and 1H-NMR for the Analysis of Polymers. J. Magn. Res. 183 (2006) 309.

14.     A. Albrecht, R. Brüll, T. Macko, H. Pasch: Separation of Ethylene-Vinyl Acetate Copolymers by High-Temperature Gradient Liquid Chromatography. Macromolecules 40 (2007) 5545.

15.     H. Pasch, L.-C. Heinz, T. Macko, W. Hiller: High-Temperature Gradient HPLC and LC-NMR for the Analysis of Complex Polyolefins. Pure & Applied Chem. 80 (2008) 1747.

16.     J. Raust, A. Brüll, C. Moire, C. Farcet, H. Pasch: Two-Dimensional Chromatography of Complex Polymers, 6. Method Development for (Meth)acrylate-Based Copolymers. J. Chromatogr. A 1203 (2008) 207-216.

17.     K.-H. Spriestersbach, F. Rittig, H. Pasch: Separation of non UV-absorbing synthetic polyelectrolytes by capillary electrophoresis with contactless conductivity detection. Electrophoresis 29 (2008) 4407-4411.

18.     F.A. Messaud, R.D. Sanderson, J.R. Runyon, S.K.R. Williams, T. Otte, H. Pasch: Field-flow fractionation techniques and their applications in the separation and characterization of polymers. Progr. Polym. Sci. 34 (2009) 351-368, doi: 10.1016/j.progpolymsci.2008.11.001.

19.     T. Macko, H. Pasch: Separation of Linear Polyethylene from Isotactic, Atactic and Syndiotactic Polypropylene by High-Temperature Adsorption Liquid Chromatography. Macromolecules 42 (2009) 6063-6067, DOI; 10.1021/ma900979n.

20.     T. Otte, R. Brüll, T. Macko, T. Klein, H. Pasch: Optimisation of Asymmetrical Flow Field-      Flow Fractionation with Dual Angle Light Scattering and Refractive Index Detection. J. Chromatogr. A 1217 (2010) 722-730, doi: 10.1016/j.chroma.2009.12.014.

21.     W.Hiller, H.Pasch, P.Sinha, T.Wagner, J.Thiel, M.Wagner, K.Müllen: Coupling of NMR and liquid chromatography at critical conditions: A new tool for block length and microstructure analysis of block copolymers. Macromolecules 43 (2010) 4853-4863, DOI: 10.1021/ma902359e.

22.     L. Houillot, C. Bui, C. Farcet, C. Moire, J.A. Raust, H. Pasch, M. Save,B. Charleux: Dispersion polymerization of methyl acrylate in non-polar solvent stabilized by block copolymers formed in situ via the RAFT process. ACS Applied Materials & Interfaces 2 (2010) 434-442.

23.     J.A. Raust, L. Houillot, B. Charleux, C. Moire, C. Farcet, H. Pasch : Two Dimensional Chromatography of Complex Polymers, 9. Characterization of block copolymers of 2-ethylhexyl acrylate and methyl acrylate P(2EHA-block-MA) produced via macro-RAFT-mediated polymerization. Macromolecules 43 (2010) 8755–8765.

24.     T. Otte, H. Pasch, T. Macko, R. Brüll, F. J. Stadler, J. Kaschta, F. Becker, M. Buback: Characterization of branched ultrahigh molar mass polymers by asymmetrical flow field flow fractionation and size exclusion chromatography. J. Chromatogr. A 1218 (2011) 4257-4267, doi:10.1016/j.chroma.2010.12.072.

25.     T. Otte, T. Klein, R. Brüll, T. Macko , H. Pasch: Study of the abnormal late co-elution phenomenon of low density polyethylene in size exclusion chromatography using high temperature size exclusion chromatography and high temperature asymmetrical flow field-flow fractionation. J. Chromatogr. A 1218 (2011) 4240-4248, DOI: 10.1016/j.chroma.2011.01.009.

26.     W. Hiller, P. Sinha, M. Hehn, H. Pasch, T. Hofe: Separation analysis of polyisoprenes regarding microstructure by on-line LCCC-NMR and SEC-NMR. Macromolecules 44 (2011) 1311-1318, DOI: 10.1021/ma102750s.

27.     M. Hehn, W. Hiller, T. Wagner, J. Thiel, H. Pasch: Molar Mass and Microstructure Analysis of PI- b- PMMA Copolymers by SEC-NMR. Macromol. Chem. Phys. 213 (2012) 401-410, DOI: 10.1002/macp.201100645.

28.     V. Mass, K. Rode, F. Rittig, T. Ostrowski, H. Pasch: Analysis of Fatty Alcohol Ethoxylates Regarding Chain Length and Endgroups by MALDI-TOF Mass Spectrometry using Collision Induced Dissociation. Macromol. Chem. Phys. 213 (2012) 747-756, DOI: 10.1002/macp.201100602.

29.     M.I. Malik, G.W. Harding, H. Pasch: Two-dimensional liquid chromatography of PDMS-PS block Copolymers. Anal. Bioanal. Chem. 403 (2012) 601-611, DOI: 10.1007/s00216-012-5838-5.

30.     T. Wright, H. Chirowodza, H. Pasch: NMR studies on the mechanism of reverse iodine transfer polymerisation of styrene. Macromolecules 45 (2012) 2995-3003, doi.org/10.1021/ma3003888.

31.     H. Chirowodza, P.C. Hartmann, H. Pasch: MALDI-TOF Analysis of the Grafting of Clay Nanoparticles with Poly(n-butylacrylate). Macromol. Chem. Phys.  213 (2012) 847-857,  DOI: 10.1002/macp.201100671.

32.     S. Cheruthazhekatt, T.F.J. Pijpers, G.W. Harding, V.B.F. Mathot, H. Pasch: Multidimensional Analysis of the Complex Composition of Impact Polypropylene Copolymers: Combination of TREF, SEC-FTIR-HPer DSC, and High Temperature 2D-LC. Macromolecules 45 (2012) 2025−2034, dx.doi.org/10.1021/ma2026989.

33.     M.I. Malik, G.W. Harding, M.E. Grabowsky, H. Pasch: Two-dimensional liquid chromatography of PS-PEO block copolymers. J. Chromatogr. A 1244 (2012) 77-87, http://dx.doi.org/10.1016/j.chroma.2012.04.045.

34.     A.C. Makan, T. Otte, H. Pasch: Analysis of High Molar Mass Branched Polybutadienes by SEC-MALLS and AF4-MALLS. Macromolecules 45 (2012) 5247-5259, http://dx.doi.org/10.1021/ma3007812.

35.     S. Cheruthazhekatt, T.F.J. Pijpers, G.W. Harding, V.B.F. Mathot, H. Pasch: Compositional Analysis of an Impact Polypropylene Copolymer by Fast Scanning DSC and FTIR of TREF-SEC Cross-Fractions. Macromolecules 45 (2012) 5866-5880,  http://dx.doi.org/10.1021/ma3008702.

36.     W. Hiller, M. Hehn, P. Sinha, J. Raust, H. Pasch: Three-Dimensional Hyphenation: On-line Coupling of Two-Dimensional Liquid Chromatography and NMR for the Analysis of Complex Polyethylene Oxides. Macromolecules 45 (2012) 7740-7748, DOI: 10.1021/ma301494c.

37.     P. Sinha, G. Harding, K. Maiko, H. Pasch: Comprehensive Two-Dimensional Liquid Chromatography for the Separation of Protonated and Deuterated Polystyrene. J. Chromatogr. A 1265 (2012) 95-104, doi:10.1016/j.chroma.2012.09.088.

 Selected book contributions

1.       H. Pasch: Analysis of Complex Polymers by Interaction Chromatography. Advances in Polymer Science 128 (1997) 1.

2.       H. Pasch, B. Trathnigg: HPLC of Polymers.  Springer-Verlag, Heidelberg, 1997, ISBN: 3-540-61689-6.

3.       H. Pasch: Hyphenated Techniques in Liquid Chromatography of Polymers. Advances in Polymer Science 150 (2000) 1-66.

4.       P. Kilz, H. Pasch: Coupled Liquid Chromatographic Techniques in Molecular Characterization. In: Encyclopedia of Analytical Chemistry (Ed. R.A. Meyers), J. Wiley & Sons, Chichester, 2000.

5.       H. Pasch, W. Schrepp: MALDI-TOF Mass Spectrometry of  Synthetic Polymers.  Springer-Verlag, Heidelberg, 2003, ISBN 3-540-44259-6.

6.       F. Rittig, H. Pasch: Multidimensional Liquid Chromatography in Industrial Applications. In “Multidimensional Liquid Chromatography: Theory and Applications in Industrial Chemistry and Life Sciences”. Eds.: S. Cohen, M. Schure, Wiley, 2008, ISBN: 978-0-471-73847-3.

7.       H. Pasch, N.A. Mautjana: Matrix-assisted Laser Desorption/Ionization Mass Spectrometry of Polymers. in Encyclopedia of Analytical Chemistry, eds R.A. Meyers, John Wiley: Chichester. DOI: 10.1002/9780470027318.a9223. Published 15th March 2011.

8.       H. Pasch: Chromatography. In “Polymer Science: A Comprehensive Reference”, Eds.: K. Matyjaszewski, M. Moeller, Volume 2, p. 33-64, Elsevier BV, 2012 Print ISBN: 9780444533494, Electronic ISBN: 9780080878621.

9.       H. Pasch, M.I. Malik, T. Macko Recent Advances in High-Temperature Fractionation of Polyolefins. Adv. Polym. Sci. 251 (2012) XXX, DOI: 10.1007/12_2012_167, to be printed by 29 Oct 2012.

 

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