Polymer solubility in ionic liquids: dominated by hydrogen bonding

Yuan, Yunbin; Zhang, Jinming; Zhang, Baoqing; Liu, Jiajian; Zhou, Yan; Du, Ming-Xuan; Han, Liyuan; Xu, Kuang-Jie; Qiao, Xin; Liu, Chenyang

doi:10.1039/d1cp03193g

Cited by 29 publications

(41 citation statements)

References 47 publications

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“…Otherwise, the given monomer will play a distinguishing role in both the homopolymer and copolymer. It was also noted that specific polar interactions (e.g., hydrogen bonding , ) between A and B components, which may be different from the sum of A–A and B–B interactions, could result in either positive or negative deviations; this will be discussed in Section briefly.…”

Section: Introductionmentioning

confidence: 99%

Glass Transition Temperatures of Copolymers: Molecular Origins of Deviation from the Linear Relation

Huang

Zhang

et al. 2022

Macromolecules

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The glass transition temperature (T g) is an important material parameter in determining polymer properties. The main molecular structure factors affecting T g are chain stiffness and cohesive energy, causing polymers to exhibit the complex micro-structure dependence of T g. The composition dependence of the T gs of binary random copolymers mainly shows as three cases: the linear relation, the negative deviation (or concave curve), or the positive deviation (convex curve). The study of the T g’s composition dependence can guide the design of copolymer materials with desirable properties. On the other hand, it can provide insights into understanding the precise nature of the glass transition. In this study, the root cause of the T g deviation from the linear relation in random copolymers was revealed, and new molecular origins were proposed. First, the theoretical basis of why there exists a linear T g relation for copolymers was clarified, and the influence of the specific polar interactions between components was discussed briefly. More importantly, it has been identified that the negative T g deviation is related to copolymers composed of the mono-substituted (M-type) monomer and asymmetrical di-substituted (AD-type) monomer, and the positive T g deviation is related to copolymers composed of the M-type monomer and symmetrical di-substituted (SD-type) monomer. The molecular origin of the T g deviations from the linear relation is the destruction of the special conformational structures (e.g., the locally rigid conformational structure in the AD-type homopolymer or the dynamic flexible structure in the SD-type homopolymer) caused by copolymerization. The behaviors for more complex binary copolymers (AD–AD, SD–SD, and AD–SD types) were also discussed. Finally, the variation in T g of a statistical copolymer as a function of composition was summarized.

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Section: Introductionmentioning

confidence: 99%

Glass Transition Temperatures of Copolymers: Molecular Origins of Deviation from the Linear Relation

Huang

Zhang

et al. 2022

Macromolecules

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“…33 Within a certain pressure range (1.01325–101.325 kPa), a graph of the molecule concentration against the gas pressure was obtained. 34 The slope of the graph at the point at the pressure zero gives the solubility coefficient.where C is the equilibrium concentration of gas in the polymer, P is the pressure, C H is the saturation concentration of gas, and b is the affinity constant of the gas molecule.…”

Section: Simulation Theorymentioning

confidence: 99%

“…33 Within a certain pressure range (1.01325-101.325 kPa), a graph of the molecule concentration against the gas pressure was obtained. 34 The slope of the graph at the point at the pressure zero gives the solubility coefficient.…”

Section: Calculation Of Transport Parametersmentioning

confidence: 99%

Molecular simulation of enhanced separation of humid air components using GO–PVA nanocomposite membranes under differential pressures

Liu

Duan

et al. 2022

Phys. Chem. Chem. Phys.

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“…5,29,[31][32][33][34] RTILs, as a rule, possess fine-tunable physical and chemical properties. [35][36][37][38][39][40] The latter makes them attractive for several applications, in which traditional solvents perform poorly.…”

Section: Introductionmentioning

confidence: 99%

Ammonium-, phosphonium- and sulfonium-based 2-cyanopyrrolidine ionic liquids for carbon dioxide fixation

Chaban

Andreeva

Voroshylova

2022

Phys. Chem. Chem. Phys.

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Polymer solubility in ionic liquids: dominated by hydrogen bonding

Abstract: Polymer solubility in ionic liquids (ILs) cannot be predicted by the solubility parameter approach based on “like dissolves like” principle. According to Kamlet-Abraham-Taft (KAT) multiple polarity scale, ILs can be...

Cited by 29 publications

References 47 publications

Glass Transition Temperatures of Copolymers: Molecular Origins of Deviation from the Linear Relation

Glass Transition Temperatures of Copolymers: Molecular Origins of Deviation from the Linear Relation

Molecular simulation of enhanced separation of humid air components using GO–PVA nanocomposite membranes under differential pressures

Ammonium-, phosphonium- and sulfonium-based 2-cyanopyrrolidine ionic liquids for carbon dioxide fixation

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