Solvent screening for the fractionation of industrial kraft lignin
Solvent screening for the fractionation of industrial kraft lignin
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DOI：
10.1515/hf-2014-0346
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发表时间：
2016-01-01
期刊：
影响因子：
2.4
通讯作者：
Lawoko, Martin
中科院分区：
文献类型：
--
作者：
Duval, Antoine;Vilaplana, Francisco;Lawoko, Martin
市售硫酸盐木质素（KLs）的多分散性是限制其在聚合物基材料中应用的因素之一。因此，先决条件是开发与工业要求和限制相容的木质素分级策略。为此目的，已经解决了基于溶剂的木质素分级分离技术。研究了KL在符合可持续化学要求的常用工业溶剂中的部分溶解度，并结合汉森溶解度参数对结果进行了讨论。基于此筛选，提出了一种溶剂序列，它能够分离具有低多分散性的良好定义的KL级分。
The polydispersity of commercially available kraft lignins (KLs) is one of the factors limiting their applications in polymer-based materials. A prerequisite is thus to develop lignin fractionation strategies compatible with industrial requirements and restrictions. For this purpose, a solvent-based lignin fractionation technique has been addressed. The partial solubility of KL in common industrial solvents compliant with the requirements of sustainable chemistry was studied, and the results were discussed in relation to Hansen solubility parameters. Based on this screening, a solvent sequence is proposed, which is able to separate well-defined KL fractions with low polydispersity.