Ethylene Carbonate used as Reagent and Green Solvent in the Chemical Modification of Corncob

Autor:	Jorge Alcaraz-Cienfuegos, Oscar Hernández-Meléndez, Eduardo Bárzana, Martín Hernández-Luna, Eduardo Vivaldo-Lima, Adriana Chamú-Muñoz
Rok vydání:	2015
Předmět:	Polymers and Plastics Chemistry General Chemical Engineering Organic Chemistry Chemical modification Corncob Catalysis Solvent chemistry.chemical_compound Monomer Chemical engineering Reagent Phase (matter) Materials Chemistry Organic chemistry Ethylene carbonate
Zdroj:	Macromolecular Materials and Engineering. 300:810-822
ISSN:	1438-7492
Popis:	Ethylene carbonate (EC) is selected as reagent and green solvent for the modification of corncob (CC), a lignocellulosic residue obtained from wet or dry milling processes during industrial and food applications of corn grains, as well as from ethanol production plants, using the following three reaction systems: (i) liquid phase (LP) and LP-pressurized at moderate temperatures (85–175°C); (ii) solid phase at low temperatures (65–85 °C); and (iii) vapor phase at moderate temperatures (120–160 °C). Both the LP and LP-pressurized systems allow the incorporation of large amounts of EC units. LP-pressurized systems promote faster CC modification (25–35 min) at 165 °C and reduced consumption of EC monomer. CC modification in solid phase promotes moderate incorporation of EC units at low temperatures (60–80 °C) using K2CO3 as catalyst. CC modification in the vapor phase system is acceptable, efficient, and shows low monomer consumption.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c5a620368a5d3d5d0bd537fe699b4dfe https://doi.org/10.1002/mame.201500001 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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