聚木糖酶改善杨木APMP浆消潜效果的研究  

Latency Removal of Poplar APMP by Assistance of Xylanase

作　　者：曲琳[1] 陈嘉川[1] 杨桂花[1] 陈洪雷[1] 

机构地区：[1]山东轻工业学院造纸科学与技术省部共建教育部重点实验室,山东济南250353

出　　处：《中国造纸》2013年第5期7-10,共4页China Pulp & Paper

基　　金：国家自然科学基金(31070525;31270627);973计划前期研究专项(2011CB211705);山东省自然科学基金(ZR2010CM065;ZR2011CM011)项目的资助

摘　　要：在APMP浆消潜过程中分别加入酸性聚木糖酶和碱性聚木糖酶,考察聚木糖酶对纸浆潜态消除的改善作用。结果表明,碱性聚木糖酶更有助于纸浆潜态的消除,在酶用量10 IU/g浆、浆浓2%、pH值8.0、温度60℃的条件下,具有较好的消潜效果,纤维扭结指数降低了11.9%,每毫米扭结数降低了8.5%,弯曲指数降低了9.7%;环境扫描电镜(ESEM)分析显示在消潜过程中加入碱性聚木糖酶,有利于纤维的充分润胀,明显改善消潜效果。Refining is the important stage in APMP manufacture process, and high temperature pulses generated in this stage makes pulp fi- bers curly and kink, which can reduce the strength properties of the pulp. The effect of acid xylanase and alkaline xylanase on latency remov- al was compared by using fiber quality analyzer （FQA）. The result showed that alkaline xylanase can be used to improve latency removal. The optimal treatment conditions are enzyme dosage 10 IU/g pulp, pulp consistency 2% , pH value 8.0 and temperature 60~C. Kink index can decrease 11.9% , each mm kink number can reduce $. 5% , and the curl index can decrease 9.7%. Observation of Environment Scan- ning Electron Microscopy （ESEM） showed that xylanase treatment can make fiber swelling and reduce the fiber latency.

关 键 词：APMP 聚木糖酶 扭结指数 弯曲指数 

分 类 号：TS743[轻工技术与工程—制浆造纸工程]