CAJ | 학술논문

以蒸汽爆破后的甘蔗渣纤维(BF)和聚乳酸(PLA)为原料,采用模压的方法制备了PLA/BF复合材料,研究了温度以及蒸汽爆破预处理对复合材料力学性能的影响,并通过红外光谱和电子扫描电镜分析了其作用机理.结果表明,随着温度的升高,纤维的分散性变好,BF与PLA得界面黏结性能变好,复合材料的力学性能提高,温度为230℃时复合材料的力学性能最佳;而蒸汽爆破预处理可提高纤维素的含量,增大纤维的比表面积,使复合材料的力学性能得到改善.
이증기폭파후적감자사섬유(BF)화취유산(PLA)위원료,채용모압적방법제비료PLA/BF복합재료,연구료온도이급증기폭파예처리대복합재료역학성능적영향,병통과홍외광보화전자소묘전경분석료기작용궤리.결과표명,수착온도적승고,섬유적분산성변호,BF여PLA득계면점결성능변호,복합재료적역학성능제고,온도위230℃시복합재료적역학성능최가;이증기폭파예처리가제고섬유소적함량,증대섬유적비표면적,사복합재료적역학성능득도개선.
Poly lactic acid (PLA)/bagasse fiber(BF) composites were prepared by means of compres-sion molding with PLA and BF after steam explosion as raw material. The effects of temperature and steam ex-plosion pretreatment on the mechanical properties of the composites were investigated, and the mechanism was studied by infrared spectroscopy (IR) and scanning electron microscopy (SEM). The results showed that: as the mixing temperature increasing, the dispersion of BF and the interfacial bond property between BF and PLA got better, the mechanical properties of composite increased. When the mixing temperature was 230℃, the mechanical properties of the composite were the best. The fiber content and the surface area of the fiber can be increased by steam explosion pretreatment, so that the mechanical properties of composite could be im-proved.