原创《甘蔗渣制备可生物降解复合材料结构和性能》：本论文为您写生物降解毕业论文范文和职称论文提供相关论文参考文献，可免费下载。
摘 要 以甘蔗渣纤维为原料,通过对甘蔗渣进行改性,制备新型全纤维素基生物塑料材料,为其高值化利用提供了新的思路.将甘蔗渣进行热水预处理和酸碱预处理,得到BF1和BF2,再将BF1和BF2和聚ε己内酯按一定比例混合制备甘蔗渣复合材料,得到复合材料1和2,通过拉力试验机、X射线衍射（XRD）、扫描电镜（SEM）、热重分析（TGA）等手段研究复合材料的结构和性能的关系.结果表明：复合材料1的拉伸强度、拉断伸长率和撕裂强度均随着BF1含量的增加而降低,而复合材料2随着BF2含量的增加呈先升后降的趋势.BF2含量为20%的复合材料拉伸强度达9.48 MPa时,比BF1复合材料的提高了55%；BF2含量为10%的复合材料撕裂强度达40.32 KN/m时,比BF1复合材料的提高了63%.XRD分析结果发现,复合材料在6.0°、21.5°和23.8°附近有3个明显的衍射峰,说明甘蔗渣含量对复合材料衍射峰的位置和强度影响不大,但BF1复合材料的结晶度明显比BF2复合材料的小.SEM分析结果表明,当复合材料中甘蔗渣含量较少时,甘蔗渣纤维和材料基体有一定的相容性,材料基体对甘蔗渣纤维包裹性好；随着甘蔗渣含量的增加,两相间的相容性逐渐变差,当甘蔗渣含量增加至20%时,材料基体不能对甘蔗渣纤维形成很好的包裹.热重分析结果表明,复合材料1的热稳定性随着甘蔗渣含量的增加而增大,复合材料2的热稳定性呈先增后减的趋势.采用不同方法对甘蔗渣进行预处理,其热塑性能发生不同程度改变,制备的甘蔗渣复合材料的力学性能及微观结构都有所差异,酸碱预处理后的甘蔗渣呈现疏松网络结构,和复合材料中其他组分有更好的相容性,制备出的复合材料力学性能表现更佳.
关键词 甘蔗渣；可生物降解复合材料；农业废弃纤维；高值化利用
中图分类号 Q539.3 文献标识码 A
Abstract A new kind of cellulose biological plastic material was prepared by using bagasse fiber as raw material and PCL as matrix, which maximized the utilization of waste fiber, and provides the new way for comprehensive utilization of tropical agricultural waste fiber. Bagasse fibers were pretreated by hot water pretreatment and acid and alkali pretreatment, and then BF1 and BF2 are obtained respectively. The bagasse composite materials are prepared by BF1, BF2 and PCL according to certain mix ratio by weight. The relations of structure of the composite materials to the properties were studied by Tensile testing machine, X-ray diffraction（XRD）, scanning electron microscopy（SEM）, and thermogravimetry（TGA）. The results show that with the increasing amount of BF1, the tensile strength, tensile elongation and tear strength of the composite material 1 were reduced, and the tensile strength, tensile elongation and tear strength of the composite material 2 were increased at first and then decreased with the increase of bagasse fiber content. The tensile strength of the composite material is 9.48 MPa, 55% higher than that of BF1 composites materials. When the BF2 content is 10%, the tear strength of the composite material is 40.32 KN/m, 63% higher than that of BF1 composites materials. XRD patterns showed that composite materials has three obvious diffraction peak in the vicinity of 6.0° and 21.5° and 23.8°, the contents of BF affected the diffraction peak position and intensity of composite materials slightly. But the crystallinity of BF1 composite materials significantly smaller than BF2 composite materials. SEM photograph showed that when the amount of Bagasse fiber in the composite materials is small, bagasse fiber and substrate materials has good compatibility. The compatibility of two phases gradually becomes poor with the content of bagasse fiber increasing. SEM results showed that the poor interfacial adhesion between the substrate materials and bagasse fiber when the content of bagasse fiber was 20%. The result of TGA showed the thermal stability of the composite material 1 was increased with the bagasse fiber content increasing, and the thermal stability of the composite material 2 was increased first and then decreased. Bagasse fiber can adjust its thermoplastic properties through different pretreatment methods.The mechanical properties and microstructure of the bagasse fiber composite material prepared by different pretreatment were different. Bagasse fiber prepared by acid and alkali pretreatment can be integrated well with other components in the composite material, because of the loose network structure. The BF2 composite material had better mechanical properties.
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结论：甘蔗渣制备可生物降解复合材料结构和性能为关于本文可作为相关专业生物降解论文写作研究的大学硕士与本科毕业论文生物降解技术论文开题报告范文和职称论文参考文献资料。
