采用熔融共混法制备了聚甲基丙烯酸甲酯（PMMA）/CaCu 3 Ti4 O 12（CCTO）复合材料。利用X射线衍射（XRD）、热重分析（TGA）、扫描电镜（SEM）和阻抗分析仪对样品的结构、形貌和介电性能进行了表征。复合材料被发现有更好的热稳定性比纯PMMA。复合材料，与38 - 10%的CCTO（在PMMA中），表现出显着的低介电损耗在高频和低频弛豫归因于空间电荷极化MWS效应。理论模型被用来合理化这些复合材料的介电行为。在较高的温度下，由于{β}和{α}弛豫合并成单个介电色散峰，弛豫峰向较高的频率偏移。高频区的交流电导率是由电子极化引起的
英文摘要：
Composites comprising Poly(Methyl Methacrylate) (PMMA) and CaCu3Ti4O12 (CCTO) via melt mixing followed by hot pressing were fabricated. These were characterized using X-ray diffraction (XRD), thermo gravimetric (TGA), scanning electron microscopy (SEM) and Impedance analyser for their structural, morphology and dielectric properties. Composites were found to have better thermal stability than that of pure PMMA. The composite, with 38 Vol % of CCTO (in PMMA), exhibited remarkably low dielectric loss at high frequencies and the low frequency relaxation is attributed to the space charge polarization MWS effect. Theoretical models were employed to rationalise the dielectric behaviour of these composites. At higher temperatures, the relaxation peak shifts to higher frequencies, due to the merging of both {beta} and {alpha} relaxations into a single dielectric dispersion peak. The AC conductivity in the high frequency region was attributed to the electronic polarization
Poly(methyl methacrylate) - Palladium clusters nanocomposite formation by supersonic cluster beam deposition: a method for microstructured metallization of polymer surfaces
Incorporation of magnetic nanoparticles into lamellar polystyrene-b-poly(n-butyl methacrylate) diblock copolymer films: influence of the chain end-groups on nanostructuration
