نتایج جستجو برای: gelation time
تعداد نتایج: 1894456 فیلتر نتایج به سال:
The use of thiol-ene chemistry in different fields has shown superiority over the common acrylate resin due to their oxygen insensitivity and relatively long gelation time which would lead a low internal stress final product (Ye, et al. [2]).
transition in melts. Although polymeric systems’ technological applications in many different fields have received increasing researcher interest, their nontrivial viscoelastic behavior still doesn’t have a completely satisfying description. Of particular interest is the sol-gel transition, in which a viscous fluid (the sol) transforms into an elastic disordered solid (the gel) by creating in t...
Injectable constructs for in vivo gelation have many advantages in the regeneration of degenerated nucleus pulposus. In this study, an injectable hydrogel consisting of chitosan (CS) and hyaluronic acid (HA) crosslinked with glycerol phosphate (GP) at different proportions (CS : GP : HA, 6 : 3 : 1, 5 : 3 : 2, 4 : 3 : 3, 3 : 3 : 4, 2 : 3 : 5, 1 : 3 : 6, V : V : V) was developed and employed as a...
Effect on the Thermo?Gelation Process of the Degree and Molar Substitution of HPMC Polymer Hydrogels
Hydroxypropyl methylcellulose (HPMC) is a polymer made of cellulose backbone with etherified methoxy and hydroxypropyl substitutions that undergoes reversible inverse thermo-gelation upon heating. The follows two-step mechanism: first, phase separation occurs, then fibrils, formed in the polymer-rich phase, entangle to form three-dimensional gel network. This work aims at understanding influenc...
Biodegradable polymers have been widely used as scaffolding materials to regenerate new tissues. To mimic natural extracellular matrix architecture, a novel highly porous structure, which is a three-dimensional interconnected fibrous network with a fiber diameter ranging from 50 to 500 nm, has been created from biodegradable aliphatic polyesters in this work. A porosity as high as 98.5% has bee...
A study of yolks stored up to 168 d at -20 °C was conducted to determine the gelation behavior and mechanism of freeze-thawed yolk. Methods used were rheology, native and sodium dodecyl sulfate polyacrylamide gel electrophoresis (native- and SDS-PAGE), differential scanning calorimetry (DSC), transmission electron microscopy (TEM), particle size analysis, and proton nuclear magnetic resonance (...
Sodium alginate and hyaluronic acid are being used extensively in wound care applications for their exceptional properties, including gelation, biocompatibility, exudate absorption, the ability to provide a moist environment bed that accelerates healing. This research work presents potential of developing silver zinc ions loaded bioactive fibers with improved swelling (gelling), antibacterial p...
In recent years, several fluorenylmethoxycarbonyl (Fmoc)-functionalized amino acids and peptides have been used to construct hydrogels, which find a wide range of applications. Although several hydrogels have been prepared from mono Fmoc-functionalized amino acids, herein, we demonstrate the importance of an additional Fmoc-moiety in the hydrogelation of double Fmoc-functionalized L-lysine [Fmo...
Heat coagulation of milk results from a complex series of physicochemical reactions that eventually lead to precipitation or gelation. Viscosity of milk tends to increase upon heating as it approaches the point of coagulation of the proteins, which is the basis for producing high viscosity in super-heated condensed milk. Although viscous property may have been studied extensively in cow fluid m...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید