中文摘要：

采用熔融共混方法制备了聚（3-羟基丁酸酯-co-4-羟基丁酸酯）[P（3HB-co-4HB）]和酰胺成核剂的复合体系，并通过万能材料试验机、差示扫描量热仪（DSC）、偏光显微镜（POM）和x射线衍射仪（XRD）等测试手段考察了不同含量酰胺成核剂对P（3HB—co-4HB）基体的力学、热力学及结晶性能的影响。结果表明：酰胺成核剂在共混体系中起到成核剂作用，可有效改善P（3HB-co-4HB）结晶性能，提高其韧性。

英文摘要：

The Poly （ 3-hydroxylbutyrate-co-4-hydroxylbutyrate ） [ P （ 3 HB-co-4 HB ） ]/amide nucleating agent composites were prepared by melting molding method. Universal testing machine, cifferential scanning calorimeter （DSC）, polarizing microscope（POM） and X-ray diffraction（XRD） were employed to study the influence of mechanics,thermodynamics and crystal properties of P（3HB-co-4HB）/amide nucleating agent system. The result indicated that amide nucleating agent played the role of nucleating agents which could improve the crystallization and toughness of [ P（3HB-co-4HB）].