Preparation of biodegradable plastic in microwave oven and solvent-free conditions

Gourson, C.; Benhaddou, R.; Granet, Robert; Krausz, Pierre; Saulnier, Luc; Thibault, Jean‐François

doi:10.1016/s1387-1609(99)80004-8

Cited by 12 publications

(10 citation statements)

References 12 publications

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“…During the last years, many research teams have had an interest in cellulose compounds for waste treatment, because they are quite easily available and renewable. Cellulose is the most abundant polymer on earth (Satge et al 2002, Chauvelon et al 1998, Gourson et al 1999 and derived substrates are suitable for trapping dyes (Marchetti et al 2000), organic (Maurin et al 1999, Aloulou et al 2006, Alila and Boufi, 2009) and inorganic (Randall et al 1976, Li and Bai 2005, Navarro et al 1999 pollutants. Chemical modification of cellulose (e.g.…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

Bouhdadi

Benhadi

Molina

et al. 2011

Maderas, Cienc. tecnol.

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Cellulose was modified under mild conditions in order to increase its capability to trap pollutants. Nicotinoyl chloride hydrochloride (NCHC), with its pyridine ring able to adsorb cations, was grafted on the substrate. This grafting has been monitored by infrared spectroscopy and elemental analysis. We have studied the adsorption of Methylene Blue (MB) onto grafted and unmodified cellulose. It was observed that grafting increases three times the retention capacity of cellulose and the kinetics of adsorption is perfectly represented by a pseudo second order model. The adsorption is well described by a Langmuir-type isotherm showing a homogeneous adsorption phenomenon through the formation of a monolayer. Besides the reaction is spontaneous and exothermic, suggesting the possibility of recycling the substrate by desorbing the dye at elevated temperature.

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Section: Introductionmentioning

confidence: 99%

Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

Bouhdadi

Benhadi

Molina

et al. 2011

Maderas, Cienc. tecnol.

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“…It has been studied extensively as the means to develop new biotechnologies for food, chemistry, pharmaceutical and fuels. In this context, chemical modifications of cellulose, such as esterification, have resulted in the development of biodegradable plastics used for packaging food products (Gourson et al 1999). In recent years, a specific catalytic oxidation of the primary hydroxyl groups of cellulose by the stable nitroxyl radical 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) in the presence of an abundance of polysaccharides has been described for its high regioselectivity and reaction rate (Nooy et al 1995;Isogai and Kato 1998).…”

Section: Introductionmentioning

confidence: 99%

Production of oligocellouronates by biodegradation of oxidized cellulose

et al. 2006

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The biodegradation of b-(1,4)-polyglucuronic acids from cellulose acetate oxidation utilizing the TEMPO/ NaBr/NaOCl system was investigated using a glucuronan lyase isolated from Trichoderma strain GL2. Products of the b-elimination mechanism catalyzed by this enzyme were then purified by size-exclusion chromatography and characterized by ESI-Q/TOF-mass spectrometry and 1 H-NMR spectroscopy. The analyses prove the complete biodegradation of this category of cellulose derivates and open the way to the large-scale production of oligouronides.

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“…Concerning cellulose fatty ester purification, conventional methods were always based on the use of organic solvents. Examples quoted in the literature describe the precipitation/solubilization system10, 11 by using methanol (or ethanol) and chloroform, respectively, and Soxhlet extraction12, 13 (using ethanol, methanol, or acetone).…”

Section: Introductionmentioning

confidence: 99%

New methods for acylation of pure and sawdust‐extracted cellulose by fatty acid derivatives—Thermal and mechanical analyses of cellulose‐based plastic films

Joly

Granet

Branland

et al. 2005

J of Applied Polymer Sci

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This work deals with the synthesis of cellulosic plastic films obtained in homogeneous conditions by microwave-induced acylation of commercial or chestnut tree sawdust cellulose by fatty acids. The acylation reaction was studied according to N,N-dimethyl-4-aminopyridine (DMAP) amount, DMAP simultaneously playing the role of catalyst and proton trapping base. This study clearly showed that DMAP does not influence degrees of substitution (DS), massic, and molar yields. Plastic films synthesized in the absence of DMAP showed a decrease in mechanical behavior. Organic (tributylamine) or inorganic bases (CaCO 3 , Na 2 CO 3 ) were then added to replace DMAP basic activity, and no changes were observed. Concerning thermal and mechanical properties of plastics obtained with various bases, glass transition temperatures (T g ) and degradation temperature (T d ) were found constant whatever the base, and the best mechanical properties were obtained for films synthesized in the presence of CaCO 3 . The same remarks were made concerning the valorization of chestnut tree sawdust cellulose. Microbial biodegradation of plastic films with DS ϭ 2.2 led to a loss of their mechanical behaviors.

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Preparation of biodegradable plastic in microwave oven and solvent-free conditions

Cited by 12 publications

References 12 publications

Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

Production of oligocellouronates by biodegradation of oxidized cellulose

New methods for acylation of pure and sawdust‐extracted cellulose by fatty acid derivatives—Thermal and mechanical analyses of cellulose‐based plastic films

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