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090			_aB-12766
245	1	0	_aFungal biodegradation of lignin graft copolymers from ethene monomers
490	0		_vJournal of Macromolecular Science, Part A: Pure and Applied Chemistry, 33(5), p.685-702, 1996
500			_aArtículo
520	3		_aWhite rot Basidiomycetes were able to biodegrade styrene (1-phenylethene) or methyl methacrylate (4-methyl-2-oxy-3-oxopent-4-ene) graft copolymers of lignin containing different proportions of lignin and polystyrene [poly(1-phenylethylene)] or polymethyl methacrylate [poly(1-methyl-1-(1-oxo-2-oxyprogyl)ethylene)]. The biodegradation tests were run on lignin/styrene copolymerization products which contained 10.3, 32.2, and 50.4 wt percent lignin while biodegradation tests were run on lignin/methylmethacrylate copolymerization products which contained 11 to 18 wt percent lignin. The styrene polymer samples were incubated with white rot Pleurotus ostreatus, Phanerochaete chrysosporium, Trametes versicolor, and brown rot Gloeophyllum trabeum. The methyl methacrylate polymer samples were incubated with white rot Pleurotus ostreatus, Trametes versicolor, and Phlebia radiata. White rot fungi degraded the plastic samples at a rate which increased with increasing lignin content in the copolymer sample. Both polystyrene and lignin components of the copolymer were readily degraded. Polystyrene pellets and polymethyl methacrylate sheets were not degradable in these tests. Degradation was verified by weight loss, quantitative ultraviolet spectrophotometric analysis of both lignin and styrene residue, and scanning electron microscopy of the plastic surface for both incubated or control samples. Brown rot fungus did not affect any of these plastics.
700	1	2	_aMilstein, O.
700	1	2	_aGersonde, R.
700	1	2	_aChen, M.J.
700	1	2	_aMeister, J.J.
856	4	0	_uhttps://drive.google.com/file/d/15I8-zBqwoBKxqECWa-oqONRIgCnDkZSJ/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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