Novel cellulose nanowhiskers-based polyurethane foam for rapid and persistent removal of methylene blue from its aqueous solutions
Novel cellulose nanowhiskers-based polyurethane foam for rapid and persistent removal of methylene blue from its aqueous solutions
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DOI：
10.1016/j.cej.2016.07.008
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发表时间：
2016-11-15
影响因子：
15.1
通讯作者：
Ahn, Jou-Hyeon
中科院分区：
文献类型：
--
作者：
Kumari, Sapana;Chauhan, Ghanshyam S.;Ahn, Jou-Hyeon
为了实现e（2）的概念，即，作为用于环境保护的经济且环境友好的材料，生物质或多糖可以用作起始材料，作为多元醇，以开发新的生物基聚氨酯泡沫（PUF），其是具有广泛应用的成本效益和多用途的聚合物材料，其常规地由多元醇与多异氰酸酯经由氨基甲酸酯键的反应获得。本研究以松针中提取的纤维素为原料，经酸水解制备纤维素纳米晶须，再与二苯甲烷二异氰酸酯反应合成新型聚氨酯泡沫。合成的PUF的特点是使用各种技术，并应用于快速和连续去除废水中使用亚甲基蓝（MB）染料作为模型污染物从其水溶液。在55摄氏度下，在20分钟内观察到几乎完全的MB去除，具有非常高的最大保留容量（554.8 mgig）和多次重复循环的可重复使用性。(C)© 2016 Elsevier B.V.版权所有。
To realize the concept of e(2) i.e., economical and environmentally-friendly materials for the environmental protection, the biomass or the polysaccharides can be used as starting materials, as polyols, to develop new bio-based polyurethane foam (PUF), a cost-effective and versatile polymer material with wide range of applications, which has been conventionally obtained from the reaction of polyol with polyisocyanate via urethane linkages. In the present study, new PUF was synthesized from cellulose nanowhiskers prepared by acidic hydrolysis of cellulose extracted from pine needles, and diphenylmethane diisocyanate. The synthesized PUF was characterized using various techniques and applied for the rapid and continuous removal of water effluents using methylene blue (MB) dye as model pollutant from its aqueous solutions. Almost complete MB removal was observed within 20 min at 55 degrees C with a very high maximum retention capacity of 554.8 mgig and reusability for numerous repeat cycles. (C) 2016 Elsevier B.V. All rights reserved.