Cellulase-assisted refining of bleached softwood kraft pulp for making water vapor barrier and grease-resistant paper

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• 作者：Peng Lu ; Weiwei Zhang ; Man He ; Yajing Yan ; Huining Xiao
• 关键词：Cellulase hydrolysis ; Refining ; Water vapor barrier ; Grease resistance
• 刊名：Cellulose
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：23
• 期：1
• 页码：891-900
• 全文大小：1,895 KB
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• 作者单位：Peng Lu (1)
  Weiwei Zhang (1) (2)
  Man He (1) (3)
  Yajing Yan (4)
  Huining Xiao (1)
  
  1. Department of Chemical Engineering and Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada
  2. Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, China
  3. School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
  4. School of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Bioorganic Chemistry
  Physical Chemistry
  Organic Chemistry
  Polymer Sciences
  
• 出版者：Springer Netherlands
• ISSN：1572-882X

文摘

The effect of cellulase pretreatment of bleached softwood kraft fiber before laboratory refining on the water vapor barrier and grease resistance properties of handsheets was investigated in this work. In contrast to no cellulase pretreatment, cellulase pretreatment at 0.5 filter paper units (FPU) combined with refining for 7500 revolutions was effective in reducing the water vapor transmission rate (WVTR, 50 % RH and 23 °C) of the paper by 83 % and achieving 100 % grease resistance over a 24-h test period. After cellulase pretreatment, the fiber morphology and hydrophobicity changed dramatically as a function of refining intensity. The role of cellulase pretreatment in reducing the WVTR and grease-stained areas was revealed on morphological observation by scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, as well as water contact angle testing. Keywords Cellulase hydrolysis Refining Water vapor barrier Grease resistance