通过溶液共混法和溶剂挥发法制备了氧化石墨烯/海藻酸钠(GO/SA)复合材料,通过XRD,IR,吸水性实验和拉伸实验对其结构和性能进行了研究。结果表明,GO的添加可显著提高SA基体的力学性能。当GO含量为7%(wt,质量分数,下同)时,与SA基体相比,GO/SA复合材料的干态和湿态力学性能分别提高了42.5%和212%。吸水性实验表明,GO/SA复合材料的吸水率在GO含量为3%时出现最大值。 Graphene oxide / sodium alginate (GO / SA) composites were prepared by solution blending and solvent evaporation methods. Their structures and properties were investigated by XRD, IR, water absorption and tensile tests. The results show that the addition of GO can significantly improve the mechanical properties of SA matrix. When the content of GO is 7% (wt, mass fraction), the dry and wet mechanical properties of GO / SA composites are increased by 42.5% and 212%, respectively, compared with SA matrix. The results of water absorption show that the water absorption of GO / SA composites reaches the maximum when the content of GO is 3%.