Understanding Cellulose Dissolution: Energetics of Interactions of Ionic Liquids and Cellobiose Revealed by Solution Microcalorimetry
Understanding Cellulose Dissolution: Energetics of Interactions of Ionic Liquids and Cellobiose Revealed by Solution Microcalorimetry
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DOI：
10.1002/cssc.201500272
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发表时间：
2015-05-11
期刊：
影响因子：
8.4
通讯作者：
Rinaldi, Roberto
中科院分区：
文献类型：
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作者：
de Oliveira, Heitor Fernando Nunes;Rinaldi, Roberto
采用高精度溶液微量热法研究了15种离子液体与纤维二糖的相互作用。CB和IL或CB和IL/分子溶剂（MS）溶液的混合热（H-mix）提供了CB与IL的亲和力的首次公开测量。最重要的是，我们发现，有一个很好的相关性之间的性质，发现H-混合物（（CB））和纤维素的溶解度行为的结果。这种相关性表明，H-混合物（（CB））提供了一个很好的估计，甚至在纤维素不溶的溶剂中的溶解焓的纤维素。因此，目前的研究结果开辟了新的视野，解开的错综复杂的热力学因素占纤维素溶解的自发性离子液体或IL/MS解决方案。
In this report, the interactions between fifteen selected ionic liquids (ILs) and cellobiose (CB) are examined by high-precision solution microcalorimetry. The heat of mixing (H-mix) of CB and ILs, or CB and IL/molecular solvent (MS) solutions, provides the first ever-published measure of the affinity of CB with ILs. Most importantly, we found that there is a very good correlation between the nature of the results found for H-mix((CB)) and the solubility behavior of cellulose. This correlation suggests that H-mix((CB)) offers a good estimate of the enthalpy of dissolution of cellulose even in solvents in which cellulose is insoluble. Therefore, the current findings open up new horizons for unravelling the intricacies of the thermodynamic factors accounting for the spontaneity of cellulose dissolution in ILs or IL/MS solutions.