Influence of Thermally Reduced Graphene Low-Loadings on the Crystallization Behavior and Morphology of Biodegradable Poly(ethylene succinate)
Influence of Thermally Reduced Graphene Low-Loadings on the Crystallization Behavior and Morphology of Biodegradable Poly(ethylene succinate)
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DOI：
10.1021/ie402587k
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发表时间：
2014-01-08
影响因子：
4.2
通讯作者：
Qiu, Zhaobin
中科院分区：
文献类型：
--
作者：
Jing, Xiangjin;Qiu, Zhaobin
采用溶液-凝聚法制备了可生物降解的聚丁二酸乙二醇酯（PES）/热还原石墨烯（TRG）纳米复合材料。的非等温熔融结晶峰值温度值和整体等温熔融结晶速率是更大的纳米复合材料比在纯PES，TRG的成核剂的效果的指示，然而，PES的结晶机制保持不变的纳米复合材料，无论TRG加载和结晶温度。发现纳米复合材料的非等温和熔融结晶过程随TRG负载而变化，在0.25重量% TRG负载时表现出最大值。少量TRG的掺入对球晶生长速率影响不大，但对球晶成核密度值有明显影响。TRG不改变纳米复合材料中PES的晶体结构。
Through a solution and coagulation method, biodegradable poly(ethylene succinate) (PES) and thermally reduced graphene (TRG) nanocomposites were prepared at low TRG loadings. The nonisothermal melt crystallization peak temperature values and overall isothermal melt crystallization rates are greater in the nanocomposites than in neat PES, indicative of a nucleating agent effect of TRG; however, the crystallization mechanism of PES remains unchanged in the nanocomposites, regardless of TRG loading and crystallization temperature. The nonisothermal and melt crystallization processes of the nanocomposites are found to vary with the TRG loading, exhibiting a maximum at 0.25 wt % TRG loading. The incorporation of a small amount of TRG shows little influence on the spherulitic growth rates but obviously affects the spherulites nucleation density values of the nanocomposites. TRG does not modify the crystal structure of PES in the nanocomposites.