A new quality index for benchmarking of different cellulose nanofibrils
A new quality index for benchmarking of different cellulose nanofibrils
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DOI：
10.1016/j.carbpol.2017.06.032
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发表时间：
2017-10-15
影响因子：
11.2
通讯作者：
Bras, Julien
中科院分区：
文献类型：
--
作者：
Desmaisons, Johanna;Boutonnet, Elisa;Bras, Julien
从单一植物来源，由于预处理、机械分解过程和后处理的大量可能组合，可以获得广泛的机械分解纤维素纳米材料。这导致市场上存在各种具有不同形状、形态和性质的纤维素纳米纤丝。所得材料实际上是纳米级颗粒、微纤化纤维和毫米级残余纤维的复杂混合物。定义用于确定最终纤维素纳米原纤质量的“原纤化程度”是一个具有挑战性的问题。本研究提出一种多指标方法，以单一定量等级的形式获得纤维素纳米纤丝悬浮液的质量指标。根据这种方法，不同的参数，如纸浆调质，磨浆，和半纤维素含量对除颤过程的影响突出。该方法还允许对不同的商业纳米纤维素产品进行基准测试。(C)2017由Elsevier Ltd.出版
From a single plant source, a wide range of mechanically-deconstructed cellulose nanomaterials can be obtained due to the large number of possible combinations of pre-treatments, mechanical disintegration process, and post-treatments. It leads to the existence of a variety of cellulose nanofibrils with different shapes, morphologies, and properties on the market. The resulting material is actually a complex mixture of nanoscale particles, microfibrillated fibers, and residual fibers on the millimeter scale. Defining a "degree of fibrillation" for determining the final cellulose nanofibril quality is a challenging issue. This study proposes a multi-criteria method to obtain the quality index of cellulose nanofibril suspensions under the form of a unique quantitative grade. According to this method, the influence of different parameters such as pulp conditioning, refining, and hemicellulose content on the defibrillation process is highlighted. This method also allows for the benchmarking of different commercial nanocellulose products. (C) 2017 Published by Elsevier Ltd.