Analytical Pyrolysis Thermally Assisted Hydrolysis and Methylation Cellulose

Clemens Schwarzinger

 


 

Personal information:

born on 09. Nov. 1973 in Linz, Austria

married to Bettina

1 daughter: Carolina Marie

 

Address:

Institute for Chemical Technology of Organic Materials

Johannes Kepler University Linz

A-4040 Linz, Altenberger Strasse 69

AUSTRIA

 

 

 

curriculum vitae:

 

8/2005-10/2005   Industrial postdoc at Wacker Fine Chemicals, Germany

3/2004-8/2004   Industrial postdoc at Chemtec Leuna, Germany

since 2/2003   University assistant at the Institute for Chemical Technology of Organic Materials

10/2002                awarded PhD (exactly Dr. techn.)

                           PhD thesis: "Thermally assisted hydrolysis and methylation of carbohydrates

                           and related materials"

since 7/2001   Deputy head of the Institute for Chemical Technology of Organic Materials

4/2000 - 1/2003   Research assistant at the Institute for Chemical Technology of Organic Materials

3/2000 - 10/2002   PhD studies at Johannes Kepler University Linz

3/2000 awarded Dipl.-Ing. (MS)

Diploma thesis: "Pyrolysis-GC/MS of cellulose and cellulose derivatives"

10/1993 - 3/2000 Studies of chemistry at Johannes Kepler University Linz

9/1984 - 6/1992 High school (with emphasis on natural sciences)

 


 

 

 

Grants:

 

Theodor Koerner Fond Grant 2002

 

 

 

Publications:

 

M. Leidl, C. Schwarzinger: "Identification of fungi with analytical pyrolysis and thermally assisted hydrolysis and methylation"; J. Anal. Appl. Pyrolysis 74 (2005) 26-32 

 

M. Leidl, C. Schwarzinger: "Pyrolysis and THM reactions of melamine and its resins"; J. Anal. Appl. Pyrolysis 74 (2005) 200-203 

 

C. Schwarzinger*; H. Kranawetter: "Analysis of the active compounds in different parts of the Schisandra chinensis tree by means of pyrolysis GC/MS"; Monatsh. Chem. 135/9 (2004) 1201-1208 

 

C. Schwarzinger: "Identification methylated saccharinolactones and partially methylated saccharinic acids in the thermally assisted hydrolysis and methylation of carbohydrates"; J. Anal. Appl. Pyrolysis 71 (2004) 501-514 

 

C. Schwarzinger: "On the mechanism of thermally assisted hydrolysis and methylation of carbohydrates: The contribution of aldol and retro aldol reactions"; J. Anal. Appl. Pyrolysis 68-69 (2003) 137-149 

 

I. Tanczos, C. Schwarzinger, H. Schmidt, J. Balla: "THM-GC/MS analysis of model uronic acids of pectin and hemicellulose"; J. Anal. Appl. Pyrolysis 68-69 (2003) 151-162 

 

C. Schwarzinger*; A. Pfeifer; H. Schmidt: "Determination of the nitrogen content of cationic cellulose fibers with analytical pyrolysis"; Monatsh. Chem. 133/1 (2002) 1-7

 

C. Schwarzinger*; I. Tanczos; H. Schmidt: "Levoglucosan, cellobiose and their acetates as model compounds for the thermally assisted hydrolysis and methylation of cellulose and cellulose acetate"; J. Anal. Appl. Pyrolysis, 62/2 (2002) 179-196

 

C. Schwarzinger*; I. Tanczos; H. Schmidt: "Pyrolysis-GC/MS and thermally assisted hydrolysis and methylation (THM) analysis of various cellulose esters"; J. Anal. Appl. Pyrolysis, 58-59 (2001) 515-525

 

 

Talks:

"Identification of polar polymer systems with reactive pyrolysis - GC/MS"; 11. Oesterreichische Chemietage, Leoben, 19.-22. September 2005

 

"Identification of fungi with analytical pyrolysis and thermally assisted hydrolysis and methylation"; 16th International Symposium of Analytical and Applied Pyrolysis, Alicante, 23.-27. May 2004

 

"Pyrolysis GC/MS for the characterization of polymers"; invited talk at the Kekutex Seminar for Polymer Characterization, Rehau, Germany, 24. September 2002

 

"On the mechanism of thermally assisted hydrolysis and methylation of carbohydrates: The contribution of aldol and retro aldol reactions"; 15th International Symposium of Analytical and Applied Pyrolysis, Leoben, 17.-20. September 2002

 

"Analysis of the active substances in different parts of the Schisandra chinensis tree with pyrolysis GC/MS"; 7th International Symposium on Advances in Analytical Separation Science, Poertschach June 3-5, 2002

 

 

Posters:

M. Leidl, W. Huber, C. Schwarzinger "Investigations on a linear melamine-formaldehyde resin"; presented at the 11. Oesterreichische Chemietage, Leoben, 19.-22. September 2005

 

W. Huber, M. Leidl, C. Schwarzinger "Differentiation of isomeric aminoresin structures with HPLC Ion-Trap MS(n)"; presented at the 11. Oesterreichische Chemietage, Leoben, 19.-22. September 2005

 

M. Leidl, C. Schwarzinger "Pyrolysis and THM reactions of melamine and its resins"; presented at the 16th International Symposium of Analytical and Applied Pyrolysis, Alicante, 23.-27. May 2004

 

C. Schwarzinger "Identification of new compounds in the thermally assisted hydrolysis and methylation of carbohydrates"; presented at the 15th International Symposium of Analytical and Applied Pyrolysis, Leoben, 17.-20. September 2002

 

I. Tanczos, C. Schwarzinger, H. Schmidt "THM-GC/MS Analysis of Hemicellulose, Pectin, and Model Uronic Acids"; presented at the 15th International Symposium of Analytical and Applied Pyrolysis, Leoben, 17.-20. September 2002

 

C. Schwarzinger, H. Schmidt "On the mechanism of thermally assisted hydrolysis and methylation of carbohydrates: The contribution of aldol and retro aldol reactions"; presented at the 10. Oesterreichische Chemietage, Linz, 17.-19. September 2002

 

I. Tanczos, C. Schwarzinger, H. Schmidt "Structural Characterization of Hemicelluloses by Reactive Py-GC/MS"; presented at the EWLP 2002, Turku, Finland, 2002

 

"Pyrolysis GC/MS - A new powerful analytical method for the characterization of natural organic polymers. Acetylated wood as example"; presented at the 9. Oesterreichische Chemietage, Innsbruck, 23. - 25. September 2000

 

"Py-GC/MS of cellulose derivatives with and without TMAH"; presented at the 14th International Symposium of Analytical and Applied Pyrolysis, Sevilla, 2. - 6. April 2000

 


 

 

 

 

Research interests:

 

Mass spectrometry

Polymer analysis (especially melamine resins)

Analytical pyrolysis of woody materials and artificial polymers

Thermally assisted hydrolysis and methylation (THM or thermochmolysis)

Supercritical fluid extraction of natural products (citrus oils, Schisandra chinensis)

 

Recent research projects:

 

Characterization of Fungi with Analytical Pyrolysis and Thermally Assisted Hydrolysis and Methylation:

Construction wood has to be treated with fungicides or replaced on a regular basis, due to the attack of wood decaying fungi, which deteriorates the mechanical properties as well as the optical appearance. For an optimal application of fungicides, it is essential to identify the class of varmint. Also eatable mushrooms are often hard to distinguish form poisonous ones, especially if they are cut, dried, boiled, or even half digested. The goal of our project is to develop a method to unambiguously identify fungi and their ingredients, as there are poisons, dyes, etc.. This should be achieved using either analytical pyrolysis or thermally assisted hydrolysis and methylation, a method where the sample is pyrolyzed in the presence of tetramethylammonium hydroxide. The latter method has proven to be very promising in the analysis of natural materials, such as carbohydrates, fatty acids, or even proteins. A data base has to be build up which allows a fast and reliable identification of fungi. Identification of the fungi will be based on either unique compounds, like b-dopa, ibotenic acid, and amatoxin, or the distribution of carbohydrates and fatty acids.

 

Characterization of active substances in different parts of the Schisandra chinensis tree with analytical pyrolysis and thermally assisted hydrolysis and methylation (THM):

Schisandra chinensis is an interesting plant with a lot of substances with interest for medical use, etc. The most important group are the lignans, e.g. Schisandrins, Gomisins, and Wuweizisus. We have investigated the composition of different tree parts to optimize the extraction procedure, which was carried out with supercritical carbon dioxide.

 

Determination of the nitrogen content of cationic cellulose fibers with analytical pyrolysis:

The latest topic in the pyrolysis of cellulose derivatives was the characterization of cationic cellulose fibers. The goal of this project was to determine the nitrogen content of cotton derivatized with 3-chloro-2-hydroxypropyltrimethylammonium chloride. It could be shown that analytical pyrolysis in combination with gas chromatography and a nitrogen selective detector shows a strong potential in monitoring the nitrogen content of cellulose fibers, which have been treated with quaternization reagents. (paper submitted)

 

Identification of products arising from thermally assisted hydrolysis and methylation (THM) of cellulose:

The aim of this project is to fully identify the products from the reaction of tetramethylammonium hydroxide (TMAH) with cellulose at elevated temperatures. Synthesis of model compounds as well as isolation of the products from preparative pyrolysis experiments are done to further identify the structures of these compounds.

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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