氧化石墨烯/海藻酸钠复合材料的制备与性能研究

Preparation and research of graphene oxide/sodium alginate composite

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。

The graphene oxide/sodium alginate composite was prepared by solvent casting and evaporation methods,and the property of composites was investigated by XRD,IR,TG,water absorption test and mechanical testing.The results showed that incorporation of graphene oxide into the sodium alginate can markedly increase the mechnical strength of sodium alginate matrix.When incorporating of 7wt% GO into SA matrix,the mechnical strength of GO/SA was improved by42.5% at dry state and by 212%at wet state compared to pure SA.The water absorption test showed that when incorporation of 3wt% GO into SA matrix,the water absorption reached the maximum.