A simple method for preparing super-hydrophobic powder from paper sludge ash

被引：46
|
作者：
Spathi, Charikleia [1 ]
Young, Neale [1 ]
Heng, Jerry Y. Y. [2 ]
Vandeperre, Luc J. M. [3 ]
Cheeseman, Chris R. [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Civil & Environm Engn, London SW7 2AZ, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England
[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England
来源：
MATERIALS LETTERS | 2015年 / 142卷
基金：
英国工程与自然科学研究理事会;
关键词：
Biomimetic; Functional; Powder technology; Surfaces; Hydrophobic; STRENGTH; LOTUS;
D O I：
10.1016/j.matlet.2014.11.123
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Paper sludge ash (PSA) is a readily available waste material generated by the paper recycling industry. This work reports on the production of hydrophobic powders by dry milling PSA in the presence of a fatty acid surface functionalising agent. Optimum laboratory processing involves dry milling for 8 h with a 4 wt.% addition of stearic acid and this produced a super-hydrophobic powder with a water contact angle of 153 degrees. Different chain length fatty acids were investigated but stearic acid produced the highest hydrophobicity. The super-hydrophobicity of PSA results from the micro-particulate texture induced by dry milling with simultaneous formation of calcium stearate self-assembling surface monolayers chemically bonded to fracture surfaces. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：80 / 83
页数：4
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