Development and characterization of a dust suppression spray agent based on an adhesive NaAlg−gln−poly/polysaccharide polymer

To improve the efficiency of a dust suppression spray agent, sodium alginate (NaAlg) was polymerized and modified by graft copolymerization with dextrin and glutamine to form NaAlg−g − poly. Two optimal concentration surfactants, emulsifier OP−10 and penetrant JFC − S, were added to the NaAlg−g − poly to improve its wettability. They were used to synthesize a dust suppression agent (NaAlg−g − OJ) with good wettability, adhesion, and high coagulability. Infrared spectroscopy and thermogravimetric experiments showed that the NaAlg molecule successfully polymerized and grafted with dextrin and glutamine, and that and the thermal stability of NaAlg−g − OJ was significantly improved compared to other dust suppressant spray agents. A high−resolution scanning electron microscope was used to show that the dust suppressant agent NaAlg−g − poly formed a three−dimensional network structure which increased its water retention. Combined with spray experiments and numerical simulations to analyze the dust reduction effects of the new spray, the results showed that NaAlg−g − OJ has high thermal stability, high water retention, and good dust reduction. [Display omitted] •Environmentally friendly NaAlg was used to prepare spray dust suppression agent.•The molecular structure of dust suppressant was constructed by Materials Studio.•FTIR and TG were employed to study dust suppression agent chemical structure.•The effect of the spray dust suppression was observed by simulation and experiment.