Results 231 to 240 of about 20,406 (263)

Preparation and Characterization of Imidacloprid Lignin–Polyethylene Glycol Matrices Coated with Ethylcellulose

Journal of Agricultural and Food Chemistry, 2012
Imidacloprid, a systemic insecticide that has a water solubility of 610 mg L(-1), has been formulated in lignin-polyethylene glycol matrices by a melting process. This formulation was coated in a Wurster type fluidized-bed equipment using ethylcellulose and dibutyl sebacate. Imidacloprid has been entrapped, with an entrapment efficiency higher than 87%
Francisco, Flores-Céspedes, Cristina Isabel, Figueredo-Flores, Isabel, Daza-Fernández, Fernando, Vidal-Peña, Matilde, Villafranca-Sánchez, Manuel, Fernández-Pérez   +5 more
openaire   +2 more sources

Polyesters from lignin—2. The copolyesterification of kraft lignin and polyethylene glycols with dicarboxylic acid chlorides

European Polymer Journal, 1991
Abstract Cross-linked copolyesters containing kraft lignin were synthesized with sebacoyl chloride and terephthaloyl chloride by bulk polymerization. Polyethylene glycol was used as co-monomer and solvent for lignin. The effects of COCl/OH ratio, percentage of kraft lignin and molecular weight of PEG on the yield and thermal properties of these ...
Zhao-Xia Guo, Alessandro Gandini
openaire   +1 more source

Thermogravimetric analysis of glycol lignin fractions obtained by sequential solvent extraction

Fuel, 1993
Abstract Data are presented on the thermal behaviour of a solvolytic lignin and its fractions during combustion and devolatilization in a thermal analyser.
Ronald W. Thring, E. Chornet, Ralph P. Overend   +2 more
openaire   +1 more source

Lignin‐polyethylene glycol matrices and ethylcellulose to encapsulate highly soluble herbicides

Journal of Applied Polymer Science, 2014
ABSTRACTThe blending of lignin with polyethylene glycol (PEG) allowed us to obtain formulations with controlled release properties in which metribuzin have been successfully trapped with encapsulation efficiency higher than 85%. Moreover, the modification of the lignin's viscoelastic properties by the addition of PEG led to obtain herbicide ...
Manuel Fernández‐Pérez, Matilde Villafranca‐Sánchez, Francisco Flores‐Céspedes, Isabel Daza‐Fernández   +3 more
openaire   +1 more source

Rigid polyurethane foams containing lignin oxyalkylated with ethylene carbonate and polyethylene glycol

Industrial Crops and Products, 2019
Abstract A “green” oxyalkylation protocol employing ethylene carbonate (EC), polyethylene glycol 400 (PEG400), and water was developed to convert an industry byproduct, kraft lignin (KL), into biopolyols for the production of rigid polyurethane (RPU) foams.
Xuefeng Zhang, Yunsang Kim, Islam Elsayed, Madison Taylor, Thomas L. Eberhardt, EI Barbary Hassan, Rubin Shmulsky   +6 more
openaire   +1 more source

Determination of lignin and cellulose in forages by extraction with triethylene glycol

Journal of the Science of Food and Agriculture, 1973
AbstractA method of lignin determination which utilises the solubility of lignin in HCl‐activated triethylene glycol at 121 °C is described. Experiments on a range of samples indicate that the method is simple, fast and reproducible, and relates well to in vitro organic matter digestibility.
openaire   +1 more source

Catalytic Strategies and Mechanism Analysis Orbiting the Center of Critical Intermediates in Lignin Depolymerization

Chemical Reviews, 2023
Chaofeng Zhang, Xiao-Jun Shen, Yongcan Jin   +2 more
exaly  

Production and Hydrolytic Depolymerization of Ethylene Glycol Lignin

1989
R. W. Thring, E. Chornet, R. P. Overend, M. Heitz   +3 more
openaire   +1 more source

Bright Side of Lignin Depolymerization: Toward New Platform Chemicals

Chemical Reviews, 2018
Zhuo-Hua Sun, Bálint Fridrich, Saravanakumar Elangovan   +2 more
exaly  

Overcoming the challenges in administering biopharmaceuticals: formulation and delivery strategies

Nature Reviews Drug Discovery, 2014
Samir Mitragotri
exaly