Creep and recovery of polystyrene composites filled with graphene additives
作者：LC Tang*, X Wang, YS Zhang, K Peng, L Zhao*, Q Chen, LB Wu*, JX Jiang, GQ Lai
關鍵字：Polymer–matrix composites (PMCs), Nanocomposites, Creep, Dynamic mechanical thermal analysis (DMTA)
論文來源：期刊
具體來源：Composites Science and Technology
發表時間：2014年
In
this work, we investigate the creep and recovery behaviours of polystyrene (PS)
composites filled with two-dimensional chemically reduced graphene oxide (CRGO)
sheets. Incorporation of CRGO into PS polymer is found to significantly improve
the creep resistance and recovery properties. The
results are compared with the creep and recovery of the corresponding composites
with carbon black (CB) and carbon nanotube (CNT)
nano-additives, and it is observed that both the CB/PS and CNT/PS systems
present worse efficiencies in reducing the creep and unrecovered response. The
CRGO sheets with corrugated structures possess higher specific surface area and
display better dispersion in the PS matrix compared to the CB or CNT
nano-additives, which should produce strong sheet/matrix interfacial
interaction to restrict the mobility of polymer chains. The formation
mechanisms are further interpreted based on the analysis from the dynamic
mechanical properties and thermo-gravimetric results.