花生壳纤维增强PBS复合材料的制备及性能

Preparation and properties of peanut shell fiber reinforced PBS composite

以废弃花生壳纤维作为一种增强材料,采用熔融共混法制备了聚丁二酸丁二醇酯/花生壳纤维(PBS/F)复合材料,通过XRD、POM、SEM、DSC以及万能试验机分析了复合材料的结晶性能、热性能及力学性能,并采用分子模拟及XPS对其性能的改变进行了验证。结果表明,花生壳纤维的添加并没有改变PBS的晶型,但作为成核剂参与了PBS的结晶过程,促进了复合材料的结晶,缩短了复合材料的结晶时间。当花生壳纤维添加量为PBS质量的5%时,其成核作用最强,作为"桥梁"镶嵌在复合材料中,结合分子间相互作用使得复合材料的热性能及力学性能较纯PBS有所增强。分子模拟结果表明,花生壳纤维与PBS形成了C==O···H—O,从而增强了两者的界面结合。

Poly(butylene succinate)/peanut shell fiber(PBS/F)composite materials were prepared with waste peanut shell fiber as reinforcing material by melt blending method.The crystallization,thermal and mechanical properties of the composite materials were characterized by XRD,POM,SEM,DSC and universal testing machine.The performance changes of the composite materials were verified by molecular simulation and XPS.The results showed that the addition of peanut shell fiber did not change the crystal form of PBS,but participated in the crystallization process of PBS as nucleating agent,which promoted the crystallization of the composite materials and shortened the crystallization time.When the peanut shell fiber content was 5%of PBS mass,the nucleation effect was the strongest.As a"bridge"embedded in the composite material,the thermal and mechanical properties of the composite material were increased compared with those of pure PBS due to the intermolecular interaction.The molecular simulation results demonstrated that peanut shell fiber and PBS could form C==O···H—O,which enhances the interface between PBS and peanut shell fiber.