Modes of Interaction in Binary Blends of Hydrophobic Polyethers and Imidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquids

被引：9

作者：

Bentley, Caitlin L. ^{[1
]}

Chwatko, Malgorzata ^{[1
]}

Wheatle, Bill K. ^{[1
]}

Burkey, Aaron A. ^{[1
]}

Helenic, Alysha ^{[1
]}

Morales-Collazo, Oscar ^{[1
]}

Ganesan, Venkat ^{[1
]}

Lynd, Nathaniel A. ^{[1
]}

Brennecke, Joan F. ^{[1
]}

机构：

[1] Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA

来源：

MACROMOLECULES | 2020年 / 53卷 / 15期

基金：

美国国家科学基金会;

关键词：

TEMPERATURE PHASE-BEHAVIOR; POLY(ETHYLENE OXIDE); SEPARATION BEHAVIOR; POLYMER BLENDS; CARBON-DIOXIDE; CO2; SOLVENTS; EXTRACTION; MIXTURES; GELS;

D O I：

10.1021/acs.macromol.0c01155

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Lower critical solution behavior in binary blends of hydrophobic polyethers with 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ahmim][Tf2N]) exhibited a difference in lower critical solution temperature (LCST) greater than 80 degrees C between structurally homologous poly(isopropyl glycidyl ether) (PiPGE) and poly(n-butyl glycidyl ether) (PnBGE). Replacement of the acidic hydrogen on the imidazolium ring with a methyl group (i.e., 2,3-dimethyl-1-hexyl-imidazolium bis(trifluoromethylsulfonyl)imide ([hmmim] [Tf2N])) significantly reduced the LCST of both the PnBGE/ionic liquid (IL) mixture and the PiPGE/IL mixture. Differing degrees of hydrogen bonding between the polymer and the cation cannot alone explain the observed behavior. Similar hydrogen bonding between the [hmim](+ )cation and both polymers from molecular dynamics simulations was consistent with this conclusion. However, stronger [hmim](+) cation tail/polymer alkyl side-chain interactions for PnBGE, with consequently stronger cation/anion interactions, point to solvophobic interactions as the basis for the large LCST difference between the PnBGE/[hmim][Tf2N] and PiPGE/[hmim][Tf2N] blends.

引用

页码：6519 / 6528

页数：10

共 71 条

[11] CL&P: A generic and systematic force field for ionic liquids modeling [J].

Canongia Lopes, Jose N. ;

Padua, Agilio A. H. .

THEORETICAL CHEMISTRY ACCOUNTS, 2012, 131 (03) :1-11

[12] Extraction of alcohols from water with 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [J].

Chapeaux, Alexandre ;

Simoni, Luke D. ;

Ronan, Thomas S. ;

Stadtherr, Mark A. ;

Brennecke, Joan F. .

GREEN CHEMISTRY, 2008, 10 (12) :1301-1306

[13] PVDF/ionic liquid polymer blends with superior separation performance for removing CO2 from hydrogen and flue gas [J].

Chen, Hang Zheng ;

Li, Pei ;

Chung, Tai-Shung .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (16) :11796-11804

[14] Thermally Reversible and Irreversible Phase Transition Behaviors in Poly(ethylene oxide)/Ionic Liquid Mixtures [J].

Chen, Yunlei ;

Niu, Yanhua ;

Gong, Pengjian ;

Xiao, Zhilin ;

Li, Guangxian .

MACROMOLECULAR RAPID COMMUNICATIONS, 2017, 38 (23)

[15] Improving CO2 permeation and separation performance of CO2-philic polymer membrane by blending CO2 absorbents [J].

Cheng, Jun ;

Hu, Leiqing ;

Li, Yannan ;

Liu, Jianzhong ;

Zhou, Junhu ;

Cen, Kefa .

APPLIED SURFACE SCIENCE, 2017, 410 :206-214

[16] Structure, ion transport, and relaxation dynamics of polyethylene oxide/poly (vinylidene fluoride co-hexafluoropropylene)-lithium bis(trifluoromethane sulfonyl) imide blend polymer electrolyte embedded with ionic liquid [J].

Das, S. ;

Ghosh, A. .

JOURNAL OF APPLIED PHYSICS, 2016, 119 (09)

[17] Complete Genome of Bacillus velezensis CMT-6 and Comparative Genome Analysis Reveals Lipopeptide Diversity [J].

Deng, Qi ;

Wang, Rundong ;

Sun, Dongfang ;

Sun, Lijun ;

Wang, Yaling ;

Pu, Yuehua ;

Fang, Zhijia ;

Xu, Defeng ;

Liu, Ying ;

Ye, Riying ;

Yin, Sanjun ;

Xie, Sisi ;

Gooneratne, Ravi .

BIOCHEMICAL GENETICS, 2020, 58 (01) :1-15

[18] Promising Routes to a High Li+ Transference Number Electrolyte for Lithium Ion Batteries [J].

Diederichsen, Kyle M. ;

McShane, Eric J. ;

McCloskey, Bryan D. .

ACS ENERGY LETTERS, 2017, 2 (11) :2563-2575

[19] The Compensation Effect in the Vogel-Tammann-Fulcher (VTF) Equation for Polymer-Based Electrolytes [J].

Diederichsen, Kyle M. ;

Buss, Hilda G. ;

McCloskey, Bryan D. .

MACROMOLECULES, 2017, 50 (10) :3832-3841

[20] Ionic liquids. Green solvents for the future [J].

Earle, MJ ;

Seddon, KR .

PURE AND APPLIED CHEMISTRY, 2000, 72 (07) :1391-1398

← 1 2 3 4 5 6 7 8 →