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Dissolution performance of cellulose in [A(2)im][MOA]/MIM solvents

机译:[A(2)IM] [MOA] / MIM溶剂中纤维素的溶解性能

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摘要

Cellulose solvents ([A(2)im][MOA]/MIM) were developed by combining diallylimidazolium methoxyacetate ([A(2)im][MOA]) with N-methylimidazole (MIM). The cellulose solubilities in the ([A(2)im][MOA]/MIM) solvents were determined at 25 degrees C, and the effect of the MIM/[A(2)im][MOA] molar ratio on cellulose solubility was systematically investigated. Attractively, the solvents show cellulose solubility as high as 25.2 g 100 g(-1) even at 25 degrees C. It is proposed that the H2, H4 and H6 in [A(2)im](+) and the carboxyl O atom in [MOA](-) primarily contribute to the dissolution of cellulose; MIM mainly acts to dissociate [A(2)im][MOA] into [A(2)im](+) and [MOA](-), and stabilize the dissolved cellulose chains. Moreover, the porous cellulose materials with varying morphological structures could be tailored by simply tuning the cellulose solution concentration, and the formation mechanism of the cellulose material was discussed.
机译:通过将甲氧基哌啶([A(2)IM] [MOA])与N-甲基咪唑(MIM)组合来开发纤维素溶剂([A(2)IM]η[MOA] / MIM)。 在25℃下测定([A(2)IM]η[MOA] / MIM)溶剂中的纤维素溶解度,MIM / [A(2)IM]摩尔比对纤维素溶解度的影响 系统地调查。 吸引力地,溶剂表现出高达25.2g 100g(-1)的纤维素溶解度,即使在25℃下也可以提出[a(2)Im](+)和羧基O原子中的H 2,H4和H6 在[MOA]( - )主要有助于纤维素的溶解; MIM主要用来将[A(2)IM] [MOA]解离[A(2)IM](+)和[MOA]( - ),并稳定溶解的纤维素链。 此外,通过简单地调整纤维素溶液浓度可以根据具有变化形态结构的多孔纤维素材料,并且讨论了纤维素材料的形成机理。

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  • 来源
    《RSC Advances》 |2019年第36期|共6页
  • 作者单位

    Henan Univ Sci &

    Technol Sch Chem Engn &

    Pharmaceut Luoyang 471003 Henan Peoples R China;

    Henan Univ Sci &

    Technol Sch Chem Engn &

    Pharmaceut Luoyang 471003 Henan Peoples R China;

    Hunan Acad Forestry Changsha 410004 Hunan Peoples R China;

    Hunan Acad Forestry Changsha 410004 Hunan Peoples R China;

    Hunan Acad Forestry Changsha 410004 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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