Effect of a promising CSESE pretreatment on the morphological structure and properties of jute fibers

Plant fiber has a complex aggregated structure, high crystallinity and large number of hydrogen bonds, low chemical reaction activity. Therefore, in order to improve the reactivity, plant needs be pretreated before modification. pretreatment method an important influence on modification fibers. In this paper, Jute fibers were successively treated by particular continuous screw-extrusion steam explosion (CSESE). The effects morphological ructure, composition, thermal crystalline properties jute after investigated. Scanning electron microscopy (SEM) showed that structure changed significantly CSESE pretreatment, diameter was smaller, surface cracks specific area increased. There no new functional groups appeared fourier transform infrared spectroscopy (FTIR). Composition analysis demonstrated content hemicellulose extractive decreased, but cellulose lignin JSE increased from 66.31 % 70.19 %. X-ray photoelectron (XPS) suggested Thermogravimetric (TGA) initial decomposition temperature 334.4 355.2°C. DMA indicated Tg reduced 92.6 90.0°C. for fiber, is effective promising further modification, biofuels products.