Isolation and identification of residual chromophores in cellulosic materials

Polymer

Volumn 45, Issue 19, 2004, Pages 6437-6443

  Rosenau, Thomas ^a   Potthast, Antje ^a   Milacher, Walter ^b   Hofinger, Andreas ^a   Kosma, Paul ^a  

^a UNIVERSITY OF NATURAL RESOURCES AND LIFE SCIENCES   (Austria)

^b LENZING AG   (Austria)

Author keywords

Cellulose; Chromophores; Fibers

Indexed keywords

ACETIC ACID; ADSORPTION; AROMATIC COMPOUNDS; CELLULOSE; CHROMATOGRAPHY; NATURAL FIBERS; NUCLEAR MAGNETIC RESONANCE; SEPARATION;

CELLULOSIC PULPS; QUINOID COMPOUNDS;

CHROMOPHORES;

BORON; CELLULOSE; FLUORIDE;

ADSORPTION; ANALYTIC METHOD; ARTICLE; CHEMICAL STRUCTURE; COVALENT BOND; HEAT TREATMENT; ISOLATION AND PURIFICATION; MASS SPECTROMETRY; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; PHASE SEPARATION; SEPARATION TECHNIQUE; STRUCTURE ANALYSIS;

ACETIC ACID; ADSORPTION; AROMATIC COMPOUNDS; CELLULOSE FIBERS; CHROMATOGRAPHY; CHROMOPHORES; NUCLEAR MAGNETIC RESONANCE; SEPARATION;

CELLULOSE; CELLULOSIC FIBER; MOLECULAR STRUCTURE;

EID: 4444320243     PISSN: 00323861     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.polymer.2004.07.031     Document Type: Article

References (25)

1. Brightness was measured as UV absorbance at 457 nm according to ISO 3688/2470.
2. Kappa number was determined according to Tappi T 236 cm-85 and cuen viscosity according to SCAN-CM 15:88.
3. J. Röhrling, A. Potthast, T. Rosenau, T. Lange, A. Borgards, H. Sixta, and P. Kosma A novel method for the determination of carbonyl groups in cellulosics by fluorescence labeling. Part II: validation and applications Biomacromolecules 3 2002 969 975
4. 3-phenol complex to replace non-condensed lignin aromatics by phenol moieties in Friedel-Crafts type transalkylations. The present approach has the advantage to use the better-to-handle acetic acid complex instead of the ill-defined phenol adduct with its largely unknown chemistry. (a) M. Funaoka, and I. Abe The reactions of lignin under the presence of phenol and boron trifluoride. II. The effect of methoxyl group and ethylenic double bond on the formation of catechol Mokuzai Gakkaishi 24 1978 892 897
5. M. Funaoka, and I. Abe Degradation of protolignin by the nucleus-exchange method Mokuzai Gakkaishi 31 1985 671 676
6. Lyocell fibers and pulp heated in DMAc were used as cellulosic materials.
7. T. Rosenau, A. Potthast, H. Sixta, and P. Kosma The chemistry of side reactions and byproduct formation in the system NMMO/cellulose (Lyocell process) Prog Polym Sci 26 2001 1763 1837
8. T. Rosenau, A. Potthast, I. Adorjan, A. Hofinger, H. Sixta, H. Firgo, and P. Kosma Cellulose solutions in N-methylmorpholine-N-oxide (NMMO) - degradation processes and stabilizers Cellulose 9 3-4 2002 283 291
9. T. Popoff, and O. Theander Formation of aromatic compounds from carbohydrates. Part 1 Carbohydr Res 22 1972 135 149
10. T. Popoff, and O. Theander Formation of aromatic compounds from carbohydrates. Part 3 Acta Chem Scand B 30 1976 397 402
11. T. Popoff, and O. Theander Formation of aromatic compounds from carbohydrates. Part 4 Acta Chem Scand B 30 1976 705 710
12. T. Popoff, O. Theander, and E. Westerlund Formation of aromatic compounds from carbohydrates. Part 6 Acta Chem Scand B 32 1978 1 7
13. K. Olsson, P.A. Pernemalm, and O. Theander Formation of aromatic compounds from carbohydrates. Part 7 Acta Chem Scand B 32 1978 249 256
14. O. Theander, and D.A. Nelson Aqueous, high-temperature transformation of carbohydrates relative to utilization of biomass Adv Carbohydr Chem Biochem 46 1978 273 326
15. O. Theander, and E. Westerlund Formation of aromatic compounds from carbohydrates. Part 8 Acta Chem Scand B 34 1980 701 705
16. For a thorough examination of the chromophores in Lyocell material and their formation mechanisms see: I. Adorjan, A. Potthast, T. Rosenau, H. Sixta, and P. Kosma Discoloration of cellulose solutions in N-methylmorpholine-N-oxide (Lyocell). Part 1: studies on model compounds and pulps Cellulose 2004 in press
17. T. Rosenau, A. Potthast, W. Milacher, I. Adorjan, A. Hofinger, H. Sixta, and P. Kosma Discoloration of cellulose solutions in N-methylmorpholine-N-oxide (Lyocell). Part 2: isolation and identification of chromophores Cellulose 2004 in press
18. C. Lagercrantz Formation of stable radicals in alkaline solution of some monosaccharides Acta Chem Scand 18 5 1964 1321 1324
19. T. Rosenau, A. Potthast, A. Hofinger, and P. Kosma Hydrolytic processes and condensation reactions in the cellulose solvent system N,N- dimethylacetamide/lithium chloride. Part I Holzforschung 55 6 2001 661 666
20. A. Potthast, T. Rosenau, J. Sartori, H. Sixta, and P. Kosma Hydrolytic processes and condensation reactions in the cellulose solvent system N,N-dimethylacetamide/lithium chloride. Part 2: degradation of cellulose Polymer 44 1 2002 7 17
21. M. Beyer, C. Bäurich, and K. Fischer Mechanismen der licht- und wärmeinduzierten Vergilbung von Faserstoffen Das Papier 10A 1995 8 14
22. J. Röhrling, A. Potthast, T. Rosenau, T. Lange, A. Borgards, H. Sixta, and P. Kosma Synthesis and testing of a novel fluorescence label for carbonyls in carbohydrates and cellulosics Synlett 5 2001 682 684
23. A. Potthast, J. Röhrling, T. Rosenau, A. Borgards, H. Sixta, and P. Kosma A novel method for the determination of carbonyl groups in cellulosics by fluorescence labeling. Part III. Monitoring oxidative processes Biomacromolecules 4 3 2003 743 749
24. See Refs. [3] and [12].
25. 1H NMR measurements using internal standards.