剑麻预处理对热塑性淀粉复合材料力学性能及降解性能的影响

采用碱、蒸汽爆破等对剑麻纤维进行预处理,考察了不同预处理方法对剑麻纤维增强热塑性淀粉力学性能及降解性能的影响。结果表明:碱处理能够提高复合材料的力学性能,延长材料降解周期,是制备剑麻纤维增强热塑性淀粉复合材料有效的预处理方法;剑麻纤维增强热塑性淀粉的机理是甘油在淀粉及剑麻纤维之间起到桥梁作用,提高了热塑性淀粉与剑麻纤维的界面结合力,从而提高了复合材料的力学性能。

Effect of Sisal Pretreatment on Mechanical Properties and Degradation Property of Thermoplastic Starch Composites

Based on the alkali treatment and steam blasting for pretreating the sisal fibre,the effects of different pretreatment methods on the mechanical properties and degradation property of sisal fiber reinforced thermoplastic starch composite were investigated.The results show that: the mechanical properties of composites improve after been alkali treated,and the degradation period of composites extends,alkali treatment is a kind of effective pretreatment method for preparation of sisal fibre reinforced thermoplastic starch composites.In addition,the mechanism of sisal fibre reinforced thermoplastic starch composites is discovered,that is glycerol plays the role of bridge between starch and sisal fibre;the the interface binding force between thermoplastic starch and sisal fibre increases,thus the mechanical properties of composites improve.