纳米复合粒子GO-g-PS改性SBS复合材料性能的研究

通过原位自由基聚合法在氧化石墨烯（GO）表面接枝聚苯乙烯（PS），制备纳米复合粒子GO-g-PS，并以此对苯乙烯-丁二烯-苯乙烯三嵌段共聚物（SBS）进行改性，研究其对SBS物理性能、热稳定性和动态力学性能的影响。结果表明：PS成功接枝到GO表面，生成GO-g-PS；当GO-g-PS质量分数为0.03时，GO-g-PS改性SBS复合材料的拉伸强度和拉断伸长率较高；与SBS和GO改性SBS复合材料相比，GO-g-PS改性SBS复合材料的物理性能、热稳定性和高温峰玻璃化温度均提高。;GO-g-PS nanoparticles were prepared by grafting polystyrene（PS）onto the surface of graphene oxide（GO） by in-situ free radical polymerization，and the obtained GO-g-PS nanoparticle was applied to modify styrene-butadiene-styrene block copolymer（SBS）.The physical properties，thermal stability and dynamic mechanical properties of GO-g-PS modified SBS composites were investigated.The results showed that PS was grafted onto the surface of GO.When the mass fraction of GO-g-PS was 0.03，the tensile strength and elongation at break of GO-g-PS modified SBS composites were higher.Compared with SBS and GO modified SBS composites，the physical properties，thermal stability and glass transition temperature in the high temperature region of GO-g-PS modified SBS composites were improved