蒸汽爆破预处理PLA剑/麻复合材料的性能研究  

RESEARCH ON PROPERTIES OF PLA/STEAM EXPLOSION PRETREATMENT SISAL COMPOSITES

作　　者：张叶青 冯彦洪 瞿金平 何和智 韩丽燕 

机构地区：[1]华南理工大学聚合物成型加工工程教育部重点实验室,聚合物新型成型装备国家工程研究中心,广州510640

出　　处：《工程塑料应用》2011年第4期30-33,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(50903033、10872071、50973035);国家科技支撑计划项目(2009BAI84B05、2009BAI84B06);中央高校基本科研业务费项目(2009ZM0317);广州市科技计划项目(2007Z2-D9151)

摘　　要：对剑麻纤维(SF)进行蒸汽爆破预处理,并与可生物降解材料聚乳酸(PLA)经模压成型制备降解复合材料,研究了混炼温度、SF含量及蒸汽爆破预处理对复合材料力学性能的影响,并通过X射线光电子能谱(XPS)和扫描电子显微镜(SEM)分析了其作用机理。结果表明,蒸汽爆破预处理可提高SF纤维素的含量,增大纤维的比表面积,使复合材料的力学性能得到改善;SF质量分数为50%时,复合材料的综合性能最佳;且随着混炼温度的升高,纤维的分散性变好,复合材料力学性能得到提高,混炼温度为230℃时复合材料的力学性能最佳。Sisal fiber（SF） was pretreated by steam explosion,the degradation composite were prepared with biodegradable polylactic acid（PLA） by press moulding.The effect of mixing temperature,fiber content and steam explosion pretreatment of SF on the mechanical properties of the composite was investigated,and the mechanism was studied by X-ray photo electron spectroscopy（XPS） and scanning electron microscope（SEM）.The results showed that the content of cellulose and the specific surface area of SF could be increased by steam explosion pretreatment,so that the mechanical properties of composite could be improved.when the mass fraction of SF was 50%,the synthetic properties of the composite were the best,and as the mixing temperature increasing,the dispersion of SF got better,thus the mechanical properties of the composites increased.When the mixing temperature was 230℃,the mechanical properties of the composite were the best.

关 键 词：聚乳酸 剑麻 复合材料 温度 蒸汽爆破 

分 类 号：TQ328[化学工程—合成树脂塑料工业]