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首页> 外文期刊>Journal of Applied Polymer Science >Mechanical and thermal properties of poly(butylene succinate)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biodegradable blends
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Mechanical and thermal properties of poly(butylene succinate)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biodegradable blends

机译：聚丁二酸丁二醇酯/ 3-羟基丁酸酯-3-羟基戊酸酯可生物降解共混物的机械和热学性质

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Biodegradable polymer blends of poly(butylene succinate) (PBS) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were prepared with different compositions. The mechanical properties of the blends were studied through tensile testing and dynamic mechanical thermal analysis. The dependence of the elastic modulus and strength data on the blend composition was modeled on the basis of the equivalent box model. The fitting parameters indicated complete immiscibility between PBS and PHBV and a moderate adhesion level between them. The immiscibility of the parent phases was also evidenced by scanning electron observation of the prepared blends. The thermal properties of the blends were studied through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The DSC results showed an enhancement of the crystallization behavior of PBS after it was blended with PHBV, whereas the thermal stability of PBS was reduced in the blends, as shown by the TGA thermograms. (C) 2015 Wiley Periodicals, Inc.
机译：聚丁二酸丁二酯（PBS）和聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHBV）的可生物降解的聚合物共混物以不同的组成制备。通过拉伸试验和动态机械热分析研究了共混物的机械性能。弹性模量和强度数据对共混物组成的依赖性是基于等效盒模型建模的。拟合参数表明PBS和PHBV之间完全不混溶，并且它们之间的粘附水平中等。母相的不溶混性也通过所制备的共混物的扫描电子观察来证明。通过差示扫描量热法（DSC）和热重分析（TGA）研究了共混物的热性能。 DSC结果表明，与PHBV混合后，PBS的结晶行为增强，而PBS中的热稳定性却降低了，如TGA热分析图所示。 （C）2015年Wiley Periodicals，Inc.

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