To optimize the control of coal dust by a chemical dust suppressor, a new starch copolymer was synthesized by grafting itaconic acid-acrylic acid copolymer onto corn starch. Infrared spectroscopy was used to analyze the functional groups of the copolymer, and the adhesion performance of the copolymer was measured with coal dust adsorption experiments. The results showed that the characteristic absorption peak of the six-membered sugar ring of the starch had disappeared, indicating that the grafting of the itaconic acid-acrylic acid copolymer to the starch was successful. Surface adsorption experiments combined with molecular dynamics simulations verified the adsorption of the starch copolymer on the coal dust as well as the wrapping of the copolymer around the coal dust. After spraying for 72 h, the moisture content of the starch copolymer was still >4%, demonstrating its high moisture retention. The results of this study can be used as a reference and can provide a new method for suppressing coal dust pollution.

为了优化化学抑尘剂对煤尘的控制，通过将衣康酸-丙烯酸共聚物接枝到玉米淀粉上合成了一种新型淀粉共聚物。采用红外光谱分析共聚物的官能团，并通过煤尘吸附实验测定共聚物的粘附性能。结果表明，淀粉六元糖环的特征吸收峰已经消失，表明衣康酸-丙烯酸共聚物接枝到淀粉上是成功的。表面吸附实验结合分子动力学模拟验证了淀粉共聚物在煤尘上的吸附以及共聚物在煤尘周围的包裹。喷洒 72 h 后，淀粉共聚物的水分含量仍>4%，表明其具有高保湿性。本研究结果可作为参考，为抑制煤尘污染提供一种新的方法。