Development of a Simplified Radiation-Induced Emulsion Graft Polymerization Method and Its Application to the Fabrication of a Heavy Metal Adsorbent

Abstract

A simplified radiation-induced emulsion graft polymerization (SREG) method is proposed. This method involves a convenient and easy degassing process of a monomer solution using a commercially available sealed glass jar. A loaded weight on the lid of the jar was used to control the jar’s internal pressure as the degassing of the monomer solution took place using a vacuum pump. The degassing method was highly reproducible, resulting from no bumping of the monomer solution. The initial grafting velocity was proportional to the absorbed doses of pre-irradiation between 5 and 20 kGy. This result indicates that dissolved oxygen was sufficiently eliminated from the monomer solution at such a level where the remaining oxygen had little effect on the grafting reaction at a dose of 5 kGy. The method was then applied to the fabrication of a heavy metal adsorbent that possessed a sufficient adsorption capacity of Co(II) ions. The SREG method is applicable to the fabrication of a wide variety of functional graft polymers because high-dose-rate gamma-ray radiation and expensive experimental equipment are not necessary.

Multivariate Optimization of Removing of Cobalt(II) with an Efficient Aminated-GMA Polypropylene Adsorbent by Induced-Grafted Polymerization under Simultaneous Gamma-Ray Irradiation

“…The mixture containing 5 wt% GMA and 0.5 wt% Tween20 was used as a monomeric structure. The adsorption capacity of cobalt ion (50 ppm in initial solution) was obtained above 80% after 6h at 25 °C 26 . Hegazy and co-workers have studied the low-density polyethylene films with monomeric solution consisted of acrylic acid and 2-vinyl pyridine for the adsorption preparation.…”

Multivariate optimization of removing of cobalt(II) with an efficient aminated-GMA polypropylene adsorbent by induced-grafted polymerization under simultaneous gamma-ray irradiation

“…The mixture containing 5 wt% glycidyl methacrylate (GMA) and 0.5 wt% Tween20 was used as a monomeric structure. The adsorption capacity of cobalt ion (50 mg/L in initial solution) was obtained above 80% after 6 h at 25 °C 33 . Hegazy and co-workers have studied the low-density polyethylene films with monomeric solution consisted of acrylic acid and 2-vinyl pyridine for the adsorption preparation.…”

Analysis of the Movement Characteristics of the Pump Valve of the Mine Emulsion Pump Based on the Internet of Things and Cellular Automata

“…Combined with the differential equations of Adolf's pump valve motion, several works have carried out research on the motion law of the reciprocating plunger pump valve. Omichi et al [7] studied the influence of the Widmanstätten effect of the pump valve movement on the continuous flow conditions of the liquid in the pump barrel and established a simulation model of the pump valve movement law by using the numerical integration method. Junfeng et al [8] developed an experimental system for evaluating valve disc's motion parameters to directly obtain the valve disc motion acceleration, velocity, and displacement under real conditions.…”