invention provides a method for preparing fertilizer granules lignin, the technical aspect of the present invention is prepared by the reaction of alkali lignin and lignin-formaldehyde cross-linked, and fixed load of nitrogen, phosphorus, potassium and trace elements, made of wood granules of ...
We explore the relationship between the microstructures of the resin-derived hard carbon and its sodium storage performance. Our findings indicate that increasing the crosslinking degree of phenol-formaldehyde resins enhances the number of closed pores formed during high-temperature carbonization, thereby ...
glyoxal, urea, and formaldehyde, alone, or in further combination with ethylene glycol, with a solvent, and with an acid effective to control the rate of cross-linking between said polyol and said heterocyclic compound; forming the admixture in a shape and curing the shape to a bonded article...
The process of protein crosslinking comprises the chemical, enzymatic, or chemoenzymatic formation of new covalent bonds between polypeptides. This allows (1) the site-directed coupling of proteins with distinct properties and (2) the de novo assembly of polymeric protein networks. Transferases, hydro...
The breakthrough in this bonding application, where not only tolerance to high temperature but also total absence of formaldehyde for food application were needed, came with the discovery of the reaction of polyphenols such as tannin and even lignin (Basso et al., 2014) with triethyl phosphate ...
Dioxane extractable lignin from fibers and boards are isolated and the molecular mass estimated by gel permeation chromatography. The strength properties of the enzyme bonded boards are comparable to boards bonded by an urea-formaldehyde adhesive, whereas the dimensional stability properties of the enzyme...
Kraft lignin is hydroxymethylated or aminomethylated respectively by the reaction of lignin with formaldehyde or with formaldehyde and methylamine (Mannich reaction) under alkaline condition in the present paper. The structures of hydroxymethylated lignin (HPKL) and aminomethylated lignin (APKL) are ...
Finally, in order to increase the strength of the adsorbent structure and prevent the dissolution of the adsorbent at low pHs (suitable for adsorption), 37% aqueous formaldehyde was added to the aminated lignin, from which aminated and cross-linked lignophenol was then obtained. Different ...
A feasible route to fabricate phosphorus-doped carbon nanofibers (P-CNFs) with an inter-connected structure has been demonstrated through electrospinning, stabilization, and subsequent phosphoric acid impregnation and carbonization processes using polyacrylonitrile and lignin as carbon sources. The results ill...
The crosslinking behavior of MFRs (melamine formaldehyde resins) in the presence of wood was investigated. The influence of various factors (wood content, resin structure, etc .) on the crosslinking temperature of the resins was examined using DMTA and DSC/TGA. Fully methylated MFRs turned out ...