A non-isocyanate poly (hydroxyurethane) network was synthesized by reaction of a tricyclic carbonate compound with diamines. The system modified two types Polyhedral Oligomeric Silsesquioxane (POSS) molecules, one retaining the crosslinked nature system, and another effectively loosening it. We studied water absorption as function environmental humidity observed that all systems are extremely h...

In this study, a rapid fabrication method was developed to prepare hydrogel structures with high mechanical strength and low attenuation coefficient for ultrasound scanning. Poly acrylic acid (PAA) first prepared via free radical polymerization approach. To shorten the process time (~ 30 min in water bath), microwave heating applied facilitate reaction reduce down 80 s. The produced hydrogels s...

Among the methods available to reduce water production, injecting a gelling system composed of a polymer and a crosslinker has been widely used. In this work, a hydrogel was prepared by crosslinking of an aqueous solution containing hexamethylenetetramine (HMTA) as crosslinker, hydrochloric acid (HCl) as an activator, and the co-polymer of 2-acrylamido-2methyl-propanesulfonic-acid sodium salt (...

Front Cover: In article number 2000699 by Qiang Yan and co-workers, a new double-cross-linking frustrated Lewis pair network is constructed through three-component reaction of triarylborane, triarylphosphine, CO2. CO2, as kind dynamic covalent crosslinking, can control modulate the mechanical performance healable ability polymer system. This study will inspire way for creation gasbased adaptive...

Rheological properties of gelatin-based solutions containing different concentrations ribose and/or glycerol were assessed before electrospun mats manufactured and their investigated. Characterization included morphology, X-ray diffraction, Fourier transform infrared, solubility, swelling, the release Maillard reaction (MR) products antioxidant activity. Gelatin ? 16 % w/v favoured formation sm...

Although starch is available and biodegradable, hydrophilicity mechanical properties are still main disadvantages for many applications. In this study, arrowroot starch, a perennial herb found in tropical climates extracted from the tubers of plant was used. The chemically modified by crosslinking with different amounts glutaraldehyde order to overcome disadvantages. crosslinked then prepared a...

Epoxy coatings are usually reinforced by the use of nanofillers, but reactive nanofillers having physical tendency towards epoxide ring opening are preferable. In this work, nanosilica (SiO2) and halloysite nanotubes (HNTs) known for their hydroxyl-contained surface are used and their effects on the curing behavior of an epoxy/amine coating is compared. The spherical and tubular nano...

Fe3O4 nanoparticles decorated on cellulose aerogel (CA) from banana stems (Fe3O4@CA) were synthesized for application in the Fenton degradation of p-nitrophenol (PNP). Cellulose extracted raw was with kymene as a crosslinking agent and freeze-dried method. The Fe3O4@CA samples characterized by X-ray diffraction (XRD), Energy-dispersive spectroscopy (EDS), Scanning Electron Microscope (SEM), Tra...

Sesame cake and meal, byproducts of the sesame oil process industry mainly used as feed fertilizer, are often not optimally utilized wasted when material could be a high-quality protein source. This research primarily emphasizes preparation protein-based adhesive with urea glyoxal modification to use wood adhesive. The performance characterization modified (USP GUSP, respectively) were measured...

nanoparticles of manganese-dioxide synthesized by mechano-chemical reaction were used foras(iii) and as(v) sorption from water environment. the influence of a milling time of manganese-dioxide on sorption was examined with batch procedure. sorption as a function of contact time was investigated. kinetic of sorption, for both as(iii) and as(v), was fast. the equilibrium condition for milled sorb...