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Improvement of Paper Surface Hydrophobicity with Polypropylene Wax
  
DOI：10.11980/j.issn.0254-508X.2014.10.004
Key Words:modified WPP  blend film  low-surface-energy  hydrophobicity
Author NameAffiliation
肖圣威1 1.浙江工业大学化学工程与材料学院，浙江杭州，310014 
王德海1，* 1.浙江工业大学化学工程与材料学院，浙江杭州，310014 
杜治波1 1.浙江工业大学化学工程与材料学院，浙江杭州，310014 
胡杨飞1 1.浙江工业大学化学工程与材料学院，浙江杭州，310014 
蒋仕强2 2.浙江高阳纸业有限公司，浙江富阳，311400 
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Abstract:The complex emulsions which were prepared by blending carboxyl styrene-butadiene latex with modified polypropylene wax (MWPP) emulsions were applied to paper coating, and the effects of different kinds and contents of MWPP on paper surface hydrophobicity were researched. The surface properties of styrene-butadiene-MWPP blended films were analyzed by polarizing microscopy, AFM(Atomic Force Microscopy) and contact angle measurements. The results showed that “island-type” structures of MWPP were formed on the blended film. Water contact angle of blended film surface increased from 65.35° to 114.83° with the increasing of MWPP content from 0 to 5%. Meanwhile, coating thickness had little impact on water contact angle and surface energy of the blended film.
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