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Latency Removal of Poplar APMP by Assistance of Xylanase
  
DOI：10.11980/j.issn.0254-508X.2013.05.002
Key Words:APMP  xylanase  kink index  curly index
Fund Project:本课题得到国家自然科学基金（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。
Author NameAffiliation
曲　琳 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 
陈嘉川 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 
杨桂花 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 
陈洪雷 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 
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Abstract:Refining is the important stage in APMP manufacture process, and high temperature pulses generated in this stage makes pulp fibers curly and kink, which can reduce the strength properties of the pulp. The effect of acid xylanase and alkaline xylanase on latency removal 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℃. Kink index can decrease 11.9%, each mm kink number can reduce 8.5%, and the curl index can decrease 9.7%.Observation of Environment Scanning Electron Microscopy (ESEM) showed that xylanase treatment can make fiber swelling and reduce the fiber latency.
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