Thermo-, and pH dual-responsive poly(N-vinylimidazole): Preparation, characterization and its switchable catalytic activity

Wang, Bin; Liu, Hua‐Ji; Jiang, Tingting; Li, Qi-Heng; Chen, Yu

doi:10.1016/j.polymer.2014.09.051

Cited by 26 publications

(13 citation statements)

References 48 publications

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“…The characteristic peaks of the imidazole ring [Figure (a)] were observed at 1671.8 and 1495.8 cm −1 because of the CC and CN vibrations, respectively; 1284.4 cm −1 for a mixed peak of CN and CN stretching vibrations; and 908.3 cm −1 for the ring stretching vibrations. The peaks of the CH stretching vibrations for imidazole ring and polymer backbone were located at 3103.8 and 2948.9 cm −1 , respectively . Compared with PVI, some new peaks appeared for HCIMPM(5%) [Figure (b)], namely, 1556.5 cm −1 for the stretching vibrations of the benzene skeleton and 828.01 cm −1 for the CH deformation vibrations of the benzene ring.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a hypercrosslinked, ionic, mesoporous polymer monolith and its application in deep oxidative desulfurization

Jiang

Sun

Chen

et al. 2018

J of Applied Polymer Sci

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In this study, we used a facile and scalable strategy to produce a hypercrosslinked, ionic, mesoporous polymer monolith (HCIMPM). On the basis of structure-directing polymeric crosslinking, the interconnected nanonetwork was formed through the in situ crosslinking of the homopolymer poly(vinyl imidazole) via a quaternization reaction, and its textural properties could be effectively adjusted by the block copolymer poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide)(PEO 20 PPO 70 PEO 20 ). The maximum specific surface area and pore volume were 212 m 2 /g and 1.08 cm 3 /g, respectively. Furthermore, the synthetic framework could be functionalized via the loading of PW 12 O 32 40 through ion exchange. The obtained HCIMPM with PW 12 O 40 32 (PW-HCIMPM) was applied in the oxidative desulfurization, and approximately 100% sulfur removal could be achieved in the model oil with hydrogen peroxide (30 wt %) as an oxidant. Moreover, the solid catalyst could be recovered readily and recycled at least six times without a significant decrease in the desulfurization efficiency. As for real diesel, we also observed that almost all of the original sulfur compounds could be converted in 120 min.

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Section: Resultsmentioning

confidence: 99%

Synthesis of a hypercrosslinked, ionic, mesoporous polymer monolith and its application in deep oxidative desulfurization

Jiang

Sun

Chen

et al. 2018

J of Applied Polymer Sci

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“…Wang et al. synthesized thermo‐ and pH‐dual‐responsive poly( N ‐vinylimidazole) (PVIm) by copolymerising 2‐(isobutyramido)‐3‐methylbutyl methacrylate (IMMA) with PVIm and studied its switchable catalytic activity 34. The PVIm homopolymer is hydrophilic and shows no thermo‐responsiveness.…”

Section: Dual‐stimuli Responsivenessmentioning

confidence: 99%

Multi‐Stimuli‐Responsive Polymeric Materials

Guragain

Bastakoti

Malgras

et al. 2015

Chemistry A European J

202

114

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Stimuli-responsive materials are of immense importance because of their ability to undergo alteration of their properties in response to their environment. The properties of such materials can be tuned by subtle adjustments in temperature, pH, light, and so forth. Among such smart materials, multi-stimuli-responsive polymeric materials are of pronounced significance as they offer a wide range of applications and their properties can be tuned through several mechanisms. Here, we aim to highlight some recent studies showcasing the multi-stimuli-responsive character of these polymers, which are still relatively little known compared to their single-stimuli-responsive counterpart.

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“…3 To date, the most studied thermoresponsive materials have been those with linear structure displaying LCST properties. [3][4][5] In other words, even though the thermoresponsive materials have some specic topology, such as hydrogels, 6 star or graed polymeric structures [7][8][9] and polymeric micelles, 10 their LCST properties are originated from their thermoresponsive linear polymer components.…”

Section: Introductionmentioning

confidence: 99%

Stimuli-responsive hyperbranched poly(amidoamine)s integrated with thermal and pH sensitivity, reducible degradability and intrinsic photoluminescence

Chen

Yao

et al. 2017

RSC Adv.

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Thermo-, and pH dual-responsive poly(N-vinylimidazole): Preparation, characterization and its switchable catalytic activity

Cited by 26 publications

References 48 publications

Synthesis of a hypercrosslinked, ionic, mesoporous polymer monolith and its application in deep oxidative desulfurization

Synthesis of a hypercrosslinked, ionic, mesoporous polymer monolith and its application in deep oxidative desulfurization

Multi‐Stimuli‐Responsive Polymeric Materials

Stimuli-responsive hyperbranched poly(amidoamine)s integrated with thermal and pH sensitivity, reducible degradability and intrinsic photoluminescence

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