Polymerization and Rheological Behavior of the Thermoresponsive Gelcasting System Based on N‐isopropylacrylamide

Abstract

Recently, we developed an efficient method for rapid drying and improving relative density of the gelcast green body. In this work, polymerization and rheological behavior of the thermoresponsive gelcasting system based on N‐isopropylacrylamide were investigated. To initiate reaction of the system with 4 mL/L of catalyst, 0.25–0.5 mg/mL of initiator is considered optimal in the optimized temperature range 15–20°C. Suspensions with 40–55 vol.% solid loading still show shear‐thinning behavior, which is favorable for mixing, degassing, and casting. The final storage moduli of consolidated suspensions are approximately 104 Pa, which is sufficiently high for gelcast green bodies.

One‐pot self‐assembled TiO2/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

“…During the polymerization of slurry, the polymerization speed in some part of slurry without powders (TiO 2 and graphene) is faster than that in another part of slurry with the powder. Because the free radicals are prone to be captured by graphene and TiO 2 , and the diffusion of free radicals is hindered due to the higher viscosity of the slurry with powder . The powders were expelled and self‐assembled as various microstructures by polymerizing with the residual slurry.…”

Effect of TiO2addition on microstructure and mechanical properties of alumina‐based cores prepared by sol‐gel method

“…Different methods have been employed for the fabrication of ceramic cores such as injections molding, transfer molding, rapid prototype printing, slip casting, gel‐casting etc. Also, Wu et al fabricated alumina‐based ceramic cores by combining stereolithography and gel‐casting.…”