Results 231 to 240 of about 382,747 (271)

STUDIES ON LIGNIN AND RELATED COMPOUNDS: XIII. THE STRUCTURE AND PROPERTIES OF GLYCOL LIGNIN

Canadian Journal of Research, 1935
Lignin was extracted from spruce wood meal with ethylene glycol containing (a) 0.05% and (b) 0.2% hydrogen chloride. On purification the two glycol lignins were found to contain 16.9% OCH3 and 62.8% C., and 16.5% OCH3 and 64.7% C. respectively. The aqueous glycol mother liquor was found to contain a soluble lignin-carbohydrate compound.
K. R. Gray, E. G. King, Fritz Brauns, Harold Hibbert   +3 more
openaire   +1 more source

Efficient pretreatment of cornstalks for lignin valorization using p-toluene sulfonic acid coupling ethylene glycol

Biomass Conversion and Biorefinery, 2023
Haotong Zhang, Xia Zhang, Wenzhi Li, Wenjian Wu, Bingyue Tang, Chen Zhu   +5 more
exaly   +2 more sources

Thermal and mechanical properties of polyethylene glycol (PEG)-modified lignin/polylactic acid (PLA) biocomposites.

International Journal of Biological Macromolecules
In this study, a method was proposed to prepare biocomposites from polylactic acid (PLA) and polyethylene glycol (PEG)-modified lignin using twin-screw extrusion process.
Zehui Ju, Nicolas Brosse, Sandrine Hoppe, Zhiqiang Wang, Isabelle Ziegler-Devin, Haiyang Zhang, Biqing Shu   +6 more
semanticscholar   +1 more source

Co-production of easily hydrolysable cellulosic substrates and UV-blocking lignin nanoparticles through "lignin-first" polyethylene glycol fractionation.

International Journal of Biological Macromolecules
A novel polyethylene glycol (PEG 400)-assisted lignin-first strategy was developed to selectively fractionate sugarcane bagasse while co-producing hydrolyzable cellulosic substrates and structurally modified lignin nanoparticles (LNPs).
Guojie Song, Wenhao Hu, Qiangqiang Liu, Zhichao Deng, Hui Zhang, Changrong Shi, Meysam Madadi, Chihe Sun, Fubao Sun   +8 more
semanticscholar   +1 more source

Chitosan/polyethylene glycol diglycidyl ether/aminated lignin composite coating to enhance wet strength of paper as a low-carbon alternative to single-use plastics.

International Journal of Biological Macromolecules
The potential of paper as a plastic alternative is hindered by limited water resistance and mechanical strength. To address these challenges, this study developed a water-soluble chitosan/polyethylene glycol diglycidyl ether (PEGDE)/aminated lignin (AL ...
Zhenke Wei, Zhizun Gao, Jiayi Sun, Jia Guo, Ying Wang, Xiangyu Tang, Yonggui Wang, Zefang Xiao, Haigang Wang, Yanjun Xie   +9 more
semanticscholar   +1 more source

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

Fractionation and Characterization of Glycol Lignins by Stepwise-pH Precipitation of Japanese Cedar/Poly(ethylene glycol) Solvolysis Liquor

ACS Sustainable Chemistry & Engineering, 2021
Recently, we have demonstrated the initial process design of acid-catalyzed poly(ethylene glycol) (PEG) solvolysis of softwood Japanese cedar (JC) in a large-scale batch reactor (50 kg wood meal pe...
Thi Thi Nge, Tatsuhiko Yamada, Yuki Tobimatsu, Masaomi Yamamura, Ryo Ishii, Osamu Tanaike, Takeo Ebina   +6 more
openaire   +1 more source

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

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

Co-production of fermentation sugars and highly active lignin from eucalyptus via a mild preprocessing with diethylene glycol and chromic chloride.

International Journal of Biological Macromolecules
Eucalyptus was pretreated with diethylene glycol catalyzed by 0.02 mol/L CrCl3 for 10 min, resulting in 91 % delignification and 98 % cellulose recovery, with trace fermentation inhibitors generated.
Song Tang, Shen-ao Yuan, Yequan Sheng, Xin Tan, Qin Zhang, Qian Dong, Yuanli Wang, Fei Zhou, Jun Li, Yan-ling Yu   +9 more
semanticscholar   +1 more source