Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ivan Sumerskii"'
Autor:
Guilherme E.S. Garcia, Antje Potthast, Ivan Sumerskii, Leonardo D. Antonino, Matheus M. de Oliveira, Rogerio R. de Sousa, Jr., Thomas Rosenau, Demetrio J. dos Santos
Publikováno v:
Sustainable Chemistry for the Environment, Vol 5, Iss , Pp 100065- (2024)
Pyrolytic lignin (PL) has emerged as a promising renewable material for the production of polyurethanes (PU) due to the high concentration of hydroxyl groups in its structure, being a potential substitute for petroleum-based polyols. On one hand, the
Externí odkaz:
https://doaj.org/article/5c3d1640a4ec4549b499f9116e30413a
Autor:
Lucas Lagerquist, Andrey Pranovich, Ivan Sumerskii, Sebastian von Schoultz, Lari Vähäsalo, Stefan Willför, Patrik Eklund
Publikováno v:
Molecules, Vol 24, Iss 2, p 335 (2019)
In this work we have analyzed the pine and spruce softwood lignin fraction recovered from a novel pressurized hot water extraction pilot process. The lignin structure was characterized using multiple NMR techniques and the thermal properties were ana
Externí odkaz:
https://doaj.org/article/315dcb45bd3c4ea1ae8772803ea01664
Publikováno v:
Molecules, Vol 23, Iss 9, p 2223 (2018)
The effect of ball milling expressed as the yield of milled wood lignin (MWL) on the structure and molar mass of crude milled wood lignin (MWLc) preparation is studied to better understand the process’ fundamentals and find optimal conditions for M
Externí odkaz:
https://doaj.org/article/c6209e2a8be141139fb1f4f3d67e3bc5
Autor:
Johanna Zieher, Markus Bacher, Irina Sulaeva, Ivan Sumerskii, Hubert Hettegger, Antje Potthast, Thomas Rosenau
Publikováno v:
Cellulose.
The three cellulosic key chromophores, 2,5-dihydroxy-[1,4]-benzoquinone, 5,8-dihydroxy-[1,4]-naphthoquinone and 2,5-dihydroxy-acetophenone, are nearly ubiquitous in cellulosic materials because of their special structures and resonance stabilization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b3825353d03b5e7f94af60af2bc6b1f
https://doi.org/10.1007/s10570-023-05184-x
https://doi.org/10.1007/s10570-023-05184-x
Autor:
Elisabeth Schwaiger, Antje Potthast, Thomas Rosenau, Paul Jusner, Jonas Simon, Florian Bausch, Markus Bacher, Sonja Schiehser, Ivan Sumerskii, Hajar Khaliliyan
Publikováno v:
Cellulose. 29:1081-1095
Million tons of cellulosic paper have been used for insulating coils in oil-filled electrical power transformers, thereby assuring the electricity supply for our societies. The high working temperatures in transformers constantly degrade paper insula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cdba1c98efb8333fe4746585be3584f
https://doi.org/10.1007/s10570-021-04338-z
https://doi.org/10.1007/s10570-021-04338-z
Autor:
Irina Sulaeva, Jana Falkenhagen, Antje Potthast, Oliver Musl, Ivan Sumerskii, Arnulf Kai Mahler, Thomas Rosenau
Publikováno v:
ACS Sustainable Chemistry & Engineering. 9:16786-16795
Lignosulfonates are industrial biorefinery products that are characterized by significant variability and heterogeneity in their structural composition. Typically, they exhibit high dispersities in...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3351dbd1d9e4a081340de47b16af6a7
https://doi.org/10.1021/acssuschemeng.1c06469
https://doi.org/10.1021/acssuschemeng.1c06469
Autor:
Markus Bacher, Irina Sulaeva, Elisabeth Fitz, Oliver P. Sarosi, Antje Potthast, Ivan Sumerskii
Publikováno v:
Biomacromolecules
The electron beam irradiation (EBI) of native lignin has received little attention. Thus, its potential use in lignin-based biorefineries is not fully understood. EBI was applied to selected lignin samples and the structural and chemical changes were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a90fa37080921549b2e4830f30ebedeb
https://doi.org/10.1021/acs.biomac.1c00926
https://doi.org/10.1021/acs.biomac.1c00926
Autor:
Thomas Rosenau, Hubert Hettegger, Gerhild K. Wurzer, Markus Bacher, Robert H. Bischof, Karin Fackler, Ivan Sumerskii, Oliver Musl, Antje Potthast
Publikováno v:
Analytical Methods. 13:5502-5508
31P nuclear magnetic resonance (NMR) spectroscopy is the most common and most accurate analytical method to quantitatively determine the hydroxy group contents of technical lignins. However, for lignosulfonates, liquid-state NMR analysis is often lim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24c01dba6edffc1833a7612c8e4babe9
https://doi.org/10.1039/d1ay01241j
https://doi.org/10.1039/d1ay01241j
Autor:
Ivan Sumerskii, Matthias Guggenberger, Christian Schuster, Josua T. Oberlerchner, Hajar Khaliliyan, Antje Potthast, Stefan Böhmdorfer, Thomas Rosenau
Publikováno v:
ACS Sustainable Chemistry & Engineering. 8:16766-16774
A method for lignin quantification is presented that is based on densitometry and multivariate calibration by partial least squares (PLS). Densitometry removes interferences otherwise caused by und...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f27a179b4c482f78f418d1da26043fb
https://doi.org/10.1021/acssuschemeng.0c03950
https://doi.org/10.1021/acssuschemeng.0c03950
Autor:
Oliver Musl, Samira Galler, Gerhild Wurzer, Markus Bacher, Irina Sulaeva, Ivan Sumerskii, Arnulf Kai Mahler, Thomas Rosenau, Antje Potthast
Publikováno v:
Biomacromolecules. 23(3)
In technical lignins, functionality is strongly related to molar mass. Hence, any technical lignin exhibits concurrent functionality-type distribution (FTD) along its molar mass distribution (MMD). This study combined preparative size-exclusion chrom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6445c3692974ee4cf38dc2f66b632fed
https://pubmed.ncbi.nlm.nih.gov/35212532
https://pubmed.ncbi.nlm.nih.gov/35212532