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首页> 外文期刊>ACS applied materials & interfaces >Nanofibrillated Cellulose Templated Membranes with High Permeance
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Nanofibrillated Cellulose Templated Membranes with High Permeance

机译：具有高渗透性的纳米纤维化纤维素模板化膜

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摘要

One of the most challenging aspects of using nanofibrillated cellulose (NFC) for membranes production is their limited permeance. When NFC membranes are produced from aqueous suspensions, depending on their grammage, the permeances are in the range of a few decades of L/(hm(2)MPa) not matching satisfactory filtration times. We present a fast and sustainable solution to increase the permeances of such membranes through a combination of solvent exchange of the NFC suspension with ethanol and the use of a removable template, a mixture of calcium compounds (CC). The effect of the CC/NFC ratio was screened for various concentrations. The permeance of water could be increased by as much as 2-3 times as compared to nontemplated membranes. Further, the membranes showed the ability for penetration of water-soluble macromolecules, contaminant rejection of suspended solid particles, and thus fluids (such as orange juice) could be concentrated, with a view to applications in food industry.
机译：使用纳米原纤化纤维素（NFC）进行膜生产的最具挑战性的方面之一是其有限的渗透性。当由水性悬浮液生产NFC膜时，取决于其克重，其渗透率在数十L /（hm（2）MPa）的范围内，无法满足令人满意的过滤时间。我们提出了一种快速而可持续的解决方案，通过将NFC悬浮液与乙醇的溶剂交换以及使用可移动模板（钙化合物（CC）的混合物）的组合来提高此类膜的渗透性。针对各种浓度筛选CC / NFC比率的影响。与未模板化的膜相比，水的渗透率可提高多达2-3倍。此外，考虑到在食品工业中的应用，该膜表现出了水溶性大分子的渗透能力，悬浮固体颗粒的污染物排斥能力，因此可以浓缩流体（例如橙汁）。

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