Abstract In the study, polyaspartic acid and graphene oxide were taken as raw materials to synthesize a novel and highly efficient polyaspartic acid/graphene oxide grafted copolymer (PASP/GO) by chemical modification. From the perspective of chemical structures and morphologies, FTIR, 1H NMR, SEM and TEM indicated a success in the synthesis of PASP/GO. The thermal stability and surface area of PASP/GO were analyzed by TG and BET, respectively. Then, a static scale inhibition experiment was conducted to study the inhibition efficiency of PASP/GO against CaCO3 and CaSO4, while the inhibition performance and morphology were characterized by XRD and SEM. Besides, the dispersion capacity of PASP/GO for Fe2O3 was studied, and the molecular dynamics simulation was carried out to analyze the scale inhibition mechanism of PASP/GO. According to the results, PASP/GO exhibited excellent inhibition performance and dispersion capacity, and PASP/GO adsorbs scale particles by chelation, crystal distortion and dispersion.

中文翻译：

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聚天冬氨酸/氧化石墨烯接枝共聚物的合成及阻垢分散性能评价

摘要 本研究以聚天冬氨酸和氧化石墨烯为原料，通过化学改性合成了一种新型高效的聚天冬氨酸/氧化石墨烯接枝共聚物（PASP/GO）。从化学结构和形态来看，FTIR、1H NMR、SEM和TEM表明PASP/GO的合成是成功的。PASP/GO 的热稳定性和表面积分别通过 TG 和 BET 进行分析。然后，通过静态阻垢实验研究了PASP/GO对CaCO3和CaSO4的阻垢效率，同时通过XRD和SEM表征了阻垢性能和形貌。此外，研究了PASP/GO对Fe2O3的分散能力，并通过分子动力学模拟分析了PASP/GO的阻垢机理。根据结果​​，