蒸汽爆破和微生物酶解处理对剑麻纤维结构的影响

将蒸汽爆破和微生物酶解两种方法处理的剑麻纤维与对照进行了比较,利用扫描电镜(SEM)、红外光谱(IR)和热性能分析等仪器对纤维微观表面结构、基团及其热稳定性进行了分析,同时对化学组分、直径、回潮率、含水率、耐碱性和抗拉强度等也进行了研究.结果表明:蒸汽爆破对剑麻纤维中的半纤维素组分影响较大,但在红外光谱中并未形成新的基...

Effects of steam explosion and micro protease treatments on structure of sisal fiber

In this study,sisal fiber was treated with steam explosion and enzymolysis,and the effect of these two methods on chemical composition,diameter,moisture regain,moisture content,alkali resistance,thermal stability and tensile strength of sisal fiber was tested.Micro-surface structure,the change of functional group of the two kinds of sisal fiber treated were analyzed by scanning electron microscopy(SEM),Infrared spectroscopy(IR),Differential Scanning Calorimetry(DSC) and Thermal Gravimetric analysis(TG).The results showed that the steam explosion impacted greatly on the sisal fibers about the semi-cellulose component,but there were not new absorption peak in Infrared Spectra.Enzymolysis reduce the content of lignin contrapuntally and increase the content of cellulose in sisal.There was significant etch on the surface of sisal fiber.It was better for the cohesiveness with materials.The thermal stability of sisal fiber was improved,treated by the two methods.