Abstract A combined sulfuric acid‐free ethanol cooking and pulverization process was developed in order to achieve the complete saccharification of cellulosic component woody biomass, thereby avoiding problems associated with use strong acid catalysts. Eucalyptus wood chips were used as a raw material exposed an ethanol/water/acetic mixed solvent autoclave. This can cause fibrillation chips. During process, production furfural due excessive degradation polysaccharide components extremely low...

An attempt was made to synthesize novel composites comprising poly(2-hydroxyethyl methacrylate) (PHEMA) and cellulose nanocrystallites (CNC) (acid-treated cotton microfibrils) from suspensions of CNC in an aqueous 2-hydroxyethyl methacrylate (HEMA) monomer solution. The starting (∼5 wt % CNC) separated into isotropic upper phase anisotropic bottom one the course quiescent standing. By way polymerization HEMA different situations suspensions, we obtained films three polymer composites,...

Abstract Liquefaction of waste paper (WP) was conducted in the presence polyhydric alcohols to prepare biodegradable polyurethane foam. The liquefied‐WP‐based polyol had suitable characteristics such as apparent molecular weight, hydroxyl value, and viscosity for preparation rigid foam successfully applied produce with appropriate combinations foaming agents. obtained foams showed satisfactory densities mechanical properties good those from liquefied wood‐ starch‐based polyols. almost same...

Cellulose derivatives having a cross-linkable mercapto group were prepared by esterification of cellulose acetate (CA) with mercaptoacetic acid. The molecular structure series products (CA-MA) was characterized 1H and 1H-13C HMQC NMR spectroscopy gel permeation chromatography. solubility CA-MA in water organic solvents could be controlled changing the preparation conditions including degree acetyl substitution starting CA. samples thus synthesized showed sol–gel transition solution shape...

The mechanical defensive performance of fruit cuticular membranes (CMs) is largely dependent on the molecular arrangement their constituents. Here, we elucidated nano-sized interactions between cutin and triterpenoids in matrix Fuyu persimmon fruits (Diospyros kaki Thunb. cv. Fuyu), focusing properties using a combination polymer analyses. CMs were primarily composed wax (34.7%), which was predominantly followed by higher aliphatic compounds, (48.4%), consisting...

The present work demonstrates the formulation of cellulose nanofiber (CNF) or magnetic (mgCNF) dispersed chitosan-based edible nanocoating with superior mechanical, thermal, optical, and texture properties. fabrication mgCNF is successfully achieved through a single-step coprecipitation route, where iron particles get adsorbed onto CNF. thermal stability improved considerably, ∼17% reduction in weight observed, whereas CNF degrades completely under identical conditions. TGA analysis shows...

CNC-based nanocomposites have gained substantial interest because of their enhanced thermomechanical properties for high-end engineering applications. The chemical modification CNCs expands applicability, making them suitable use in hydrophobic polymer matrices. current study investigates the reactive reinforcing ability maleic anhydride-modified cellulose nanocrystals during situ polymerization a vinyl monomer, i.e., styrene. Highly crystalline nanocellulose (CNCBG) was isolated from...

Abstract Prolonging the lifespan of timber structures requires early detection latent deterioration in wood coatings before visible damage occurs. This study combines attenuated total reflectance‐Fourier transform infrared (ATR‐FTIR) spectroscopy with partial least squares (PLS) regression to predict induced by accelerated weathering (xenon lamp method) waterborne acrylic varying concentrations cellulose nanofiber (CNF), an additive known suppress surface defects and discoloration....

Novel polymer composites reinforced with an oriented cellulose nanocrystal (CNC) assembly were prepared from suspensions of CNC in aqueous 2-hydroxyethyl methacrylate (HEMA) via magnetic field application to the followed by polymerization treatment. The starting used at ∼6 wt % separated into upper isotropic phase and a lower anisotropic (chiral nematic) one course quiescent standing. A static or rotational was applied isolated phases. UV-induced HEMA perpetuated respective states...

Abstract A liquefied wood‐based resol resin was prepared with excellent yield by a reaction of wood and formaldehyde under alkaline conditions. The effects various parameters on the extent resin, unreacted phenol content, viscosity were investigated. Milder resinification conditions required as compared to those used in conventional methods. successfully applied produce phenolic foam using appropriate combinations foaming agents. Diisopropyl ether relatively higher boiling temperature...

Abstract Summary: Several different series of cellulose acetate‐ graft ‐poly(hydroxyalkanoate)s (CA‐ g ‐PHAs) were synthesized over a wide range compositions by the copolymerization lactic acid, L ‐lactide, ( R , S )‐ β ‐butyrolactone, δ ‐valerolactone and ε ‐caprolactone onto residual hydroxyl positions CA, virtue suitable catalyst, solvent procedure for each individual case. To achieve diversity molecular architectures respective copolymer series, degree acetyl substitution (acetyl DS ) CA...