Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Božena Košíková"'
Autor:
Božena Košíková, Juraj Lábaj
Publikováno v:
BioResources, Vol 4, Iss 2, Pp 805-815 (2009)
The blending of polypropylene with lignin derived from chemical wood pulp manufacture makes it possible to prepare optically transparent films (thickness 50-60μm) with acceptable mechanical properties in the absence of a commercial stabilizer. The l
Externí odkaz:
https://doaj.org/article/75db92eb49c34e78a8dbf06d5a0c4d15
Publikováno v:
BioResources, Vol 4, Iss 1, Pp 72-79 (2009)
The carcinogenicity and mutagenicity of chemicals may be modulated by other chemicals, including those prepared by organic synthesis. Consid-ering the several drawbacks of synthetic compounds vis-a-vis the human organism, the lignin biomass component
Externí odkaz:
https://doaj.org/article/204f0e7c06e143979f90f5910396aa50
Publikováno v:
Journal of Applied Polymer Science. 106:1626-1631
The radical scavenging capacity of lignin was determined using spectrophotometric method by means of scavenging of the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and compared with that of synthetic antioxidant Irganox 1010. Lignin reacted p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11dead0aaf58969cbe05dfedd66a61a1
https://doi.org/10.1002/app.26687
https://doi.org/10.1002/app.26687
Publikováno v:
Holzforschung. 60:166-170
The antioxidative behavior of various lignin preparations derived from chemical wood treatment for paper production was examined. All lignin samples exhibited higher antioxidant activity than Trolox. The protective effect of lignin antioxidants again
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3905b65a1c19d46b8f026da2e3ed72e1
https://doi.org/10.1515/hf.2006.027
https://doi.org/10.1515/hf.2006.027
Publikováno v:
Journal of Applied Polymer Science. 103:1226-1231
The stabilizing effect of a natural filler, sulfur-free lignin, on the thermal degradation of natural rubber (NR) was examined. Lignin was incorporated into NR in amounts of 10-30 phr (parts per hundred parts of rubber). It was shown that the lignin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b2d77d88329fca84c2a61809f4e2a4
https://doi.org/10.1002/app.24530
https://doi.org/10.1002/app.24530
Autor:
A. Gregorová, Božena Košíková
Publikováno v:
Journal of Applied Polymer Science. 97:924-929
The potential application of lignin biopolymer as a component of styrene–butadiene rubber was examined with regard to its ability to reinforce the vulcanizates. It was shown that the sulfur-free lignin preparation improved physicomechanical propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6d3956afc2b62c61601772786c096a4
https://doi.org/10.1002/app.21448
https://doi.org/10.1002/app.21448
Publikováno v:
Journal of Applied Polymer Science. 94:1855-1860
Blending of polyethylene with lignin in concentrations > 20 wt % yielded blends with relatively low mechanical properties. A new method, based on modification of polyethylene with ethylene–vinylacetate (EVA) copolymer, was developed for the prepara
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f22be2b2942713c48a8f864a24c233f
https://doi.org/10.1002/app.20716
https://doi.org/10.1002/app.20716
Publikováno v:
World Journal of Microbiology and Biotechnology. 17:601-607
The ability of the lignin-degrading microorganism Phanerochaete chrysosporium to attack polyethylene and polypropylene was investigated using a series of polymer blends containing 10, 20 and 30% lignin obtained from the waste product of pulp and pape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ebdd77075b0dcf064367927feea3775
https://doi.org/10.1023/a:1012415023385
https://doi.org/10.1023/a:1012415023385
Autor:
Elena Sláviková, Božena Košíková
Publikováno v:
Biotechnology Letters. 26:517-519
The ability of the yeast, Sporobolomyces roseus, isolated from leafy material, to modify lignin derived from beechwood pulping was examined by FTIR and 13C NMR spectroscopy, which revealed oxidative cleavage of the Calpha-Cbeta linkages between ligni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e9956de2bcfc7d5358dbf7f2852fbbe
https://doi.org/10.1023/b:bile.0000019560.88769.f4
https://doi.org/10.1023/b:bile.0000019560.88769.f4
Publikováno v:
Journal of Applied Polymer Science. 47:1065-1073
To elucidate the effect of lignin addition, polypropylene films containing 2–10 wt % of spruce organosolv lignin and/or beech wood prehydrolysis lignin were compared with lignin-free polymers with respect to tensile strength and elongation before a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d5b2fbb3a681c0f9ab96c27a799cb16
https://doi.org/10.1002/app.1993.070470613
https://doi.org/10.1002/app.1993.070470613