Das Barun, Eswar Prasad K, Ramamurty U, Rao C N R
Chemistry and Physics of Materials Unit and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur PO, Bangalore, India.
Nanotechnology. 2009 Mar 25;20(12):125705. doi: 10.1088/0957-4484/20/12/125705. Epub 2009 Mar 4.
The mechanical properties of polyvinyl alcohol (PVA) and poly(methyl methacrylate) (PMMA)-matrix composites reinforced by functionalized few-layer graphene (FG) have been evaluated using the nano-indentation technique. A significant increase in both the elastic modulus and hardness is observed with the addition of 0.6 wt% of graphene. The crystallinity of PVA also increases with the addition of FG. This and the good mechanical interaction between the polymer and the FG, which provides better load transfer between the matrix and the fiber, are suggested to be responsible for the observed improvement in mechanical properties of the polymers.
采用纳米压痕技术对功能化少层石墨烯（FG）增强的聚乙烯醇（PVA）和聚甲基丙烯酸甲酯（PMMA）基复合材料的力学性能进行了评估。添加0.6 wt%的石墨烯后，弹性模量和硬度均显著提高。PVA的结晶度也随着FG的添加而增加。聚合物与FG之间良好的机械相互作用能在基体和纤维之间提供更好的载荷传递，这一点被认为是聚合物力学性能得到改善的原因。
