超声波预处理用于制备绒毛浆  

Application of Ultrasonic Pretreatment on Fluff Pulp Preparation

作　　者：徐永建[1,2] 闫瑛[1] 岳小鹏[1] 

机构地区：[1]陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021 [2]陕西科技大学材料科学与工程博士后流动站,陕西西安710021

出　　处：《纸和造纸》2013年第10期16-19,共4页Paper and Paper Making

基　　金：国家自然科学基金项目(31170559));学术带头人培养基金项目(XKD201002)

摘　　要：以马尾松漂白浆为原料,采用扫描电子显微镜(SEM)对经超声波预处理不同时间后的纤维素纤维进行微细结构观察,探讨不同时间超声波预处理对纤维吸收性的影响;并借助广角X射线衍射(X-ray)探讨了超声波预处理对纤维素纤维聚集态结构的影响,进而研究将超声波用于绒毛浆工艺预处理的可行性。结果表明,化学木浆经超声波预处理后,纤维发生分丝帚化,超声波的空化作用更有利于促进纤维发生内部细纤维化,改善纤维的吸收性能。随着超声波预处理时间的延长,纤维的吸收性增加了23.49%,保水值增加了16.47%;结晶度从52.94%下降到40.98%,下降了20.59%,结晶度的降低也在一定程度上有利于纤维吸收性能的改善,从而说明将超声波用于绒毛浆制备工艺预处理具有一定研究意义。Pinus Massoniana pulp was chose as the raw material in this paper, effects of ultrasonic wave pretreatment on fiber ultrastructure were observed by optical microscope and SEM. And the changes of fiber absorption were investigated. Influence of ultrasonic wave pretreatment method on crystalline structure of the fiber was also analyzed by wide-angle X-ray diffraction. Then the feasibility of ultrasonic wave pretreatment method used into fluff pulp making would be researched. It revealed that after ultrasonic wave pretreatment, ultrastructure of the fiber changed inordinately, several ravines generated on the fiber surface because of strong energy released by the ultrasonic wave. The cavitation of ultrasonic wave would facilitate inner-fibrillation of the fiber. Absorption and WRV of the fiber after ultrasonic wave pretreatment increased 23.49%, 16.47%, respectively. Crystallinity of the fiber decreased from 52.94% to 40.98%, it decreased by 20.59%. The decreasing of fiber crystallinity was also conducive to improvement of fiber absorbability, so that it was meaningful that ultrasonic wave pretreatment method could be used into fluffpulp making.

关 键 词：绒毛浆 超声波预处理 空化作用 吸收性 

分 类 号：TS749[轻工技术与工程—制浆造纸工程]