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磷酸酯多库酯离子液体及其与烷烃的等摩尔混合物之间的比较：温度依赖性粘度、玻璃化转变和脆性

Comparison between Phosphonium Docusate Ionic Liquids and Their Equimolar Mixtures with Alkanes: Temperature-Dependent Viscosity, Glass Transition, and Fragility.

作者信息

Shirota Hideaki, Liu Xeuchen, Peng Yue, Hossain Faruk, Falcone R Dario

机构信息

Department of Chemistry, Chiba University, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan.

Department of Chemistry, National University of Rio Cuarto, Ruta 36 Km 601, Rio Cuarto X5804BYA, Argentina.

出版信息

ACS Omega. 2024 Sep 3;9(37):38769-38777. doi: 10.1021/acsomega.4c04681. eCollection 2024 Sep 17.

DOI:10.1021/acsomega.4c04681
PMID:39310201
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11411650/
Abstract

In this study, we determined the temperature-dependent viscosities, glass transition temperatures, and fragilities of tetraalkylphosphonium docusate ionic liquids (ILs) and their equimolar mixtures with alkanes to elucidate the effects of the alkyl groups on the phosphonium cation. The target ILs were the docusate salts with tributylheptylphosphonium ([P][doc]), tributyltetradecylphosphonium ([P][doc]), butyltrihexylphosphonium ([P][doc]), trihexylheptylphosphonium ([P][doc]), and trihexyltetradecylphosphonium cations ([P][doc]). The comparable IL/alkane mixtures were equimolar mixtures of IL and alkane with the same carbon numbers of the target ILs: [P][doc]/hexane to [P][doc]; [P][doc]/heptane to [P][doc]; [P][doc]/hexane to [P][doc]; [P][doc]/decane to [P][doc]; and [P][doc]/heptane to [P][doc]. The viscosities and glass transition temperatures of the neat ILs were higher than those of their respective IL/alkane mixtures. Based on the analysis of temperature-dependent viscosities, including a viscosity value of 10 mPa·s at the glass transition temperature using the Vogel-Fulcher-Tammann equation, the neat ILs were stronger liquids than the corresponding IL/alkane mixtures. By comparing several combinations of the neat ILs and IL/alkane mixtures, we found that the larger the alkane, the more fragile the mixture.

摘要

在本研究中，我们测定了十四烷基二甲基苄基氯化铵离子液体（ILs）及其与烷烃的等摩尔混合物的温度依赖性粘度、玻璃化转变温度和脆性，以阐明烷基对磷鎓阳离子的影响。目标离子液体是含有三丁基庚基磷鎓（[P][doc]）、三丁基十四烷基磷鎓（[P][doc]）、丁基三己基磷鎓（[P][doc]）、三己基庚基磷鎓（[P][doc]）和三己基十四烷基磷鎓阳离子（[P][doc]）的十四烷基二甲基苄基氯化铵盐。可比较的离子液体/烷烃混合物是离子液体与具有与目标离子液体相同碳原子数的烷烃的等摩尔混合物：[P][doc]/己烷与[P][doc]；[P][doc]/庚烷与[P][doc]；[P][doc]/己烷与[P][doc]；[P][doc]/癸烷与[P][doc]；以及[P][doc]/庚烷与[P][doc]。纯离子液体的粘度和玻璃化转变温度高于其各自的离子液体/烷烃混合物。基于对温度依赖性粘度的分析，包括使用Vogel-Fulcher-Tammann方程在玻璃化转变温度下10 mPa·s的粘度值，纯离子液体比相应的离子液体/烷烃混合物是更强的液体。通过比较纯离子液体和离子液体/烷烃混合物的几种组合，我们发现烷烃越大，混合物越脆。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/83c0e97705ae/ao4c04681_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/993e157e2168/ao4c04681_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/805ba0eb9260/ao4c04681_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/e608de37fefa/ao4c04681_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/cd75dd7130fb/ao4c04681_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/353b523e034c/ao4c04681_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/84f74a6c29be/ao4c04681_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/83c0e97705ae/ao4c04681_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/993e157e2168/ao4c04681_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/805ba0eb9260/ao4c04681_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/e608de37fefa/ao4c04681_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/cd75dd7130fb/ao4c04681_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/353b523e034c/ao4c04681_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/84f74a6c29be/ao4c04681_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1776/11411650/83c0e97705ae/ao4c04681_0007.jpg

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