Efficient alternating copolymerization of sulfur dioxide with cyclohexene oxide and a mechanistic understanding

Zhi, Yunfei; Wu, Jing; Aihua, Ma; Tian, Na; Shan, Shaoyun; Jia, Qingming; Su, Hongying

doi:10.1039/c6ra04506e

Cited by 14 publications

(15 citation statements)

References 33 publications

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“…kg/mol, Tg = 53 °C, Td = 205 °C, 64 -77% sulphite). [212] Similar catalysts immobilized on cellulose supports enabled catalyst recycling up to three times with little performance loss. [213] Cr(III) salen/PPNCl catalysts undergo random terpolymerisation of CO2, SO2 and CHO which may be relevant to some petrochemical waste streams where CO2 is contaminated with SO2.…”

Section: Rocop Of So2 With Epoxidesmentioning

confidence: 99%

Heterocycle/Heteroallene Ring‐Opening Copolymerization: Selective Catalysis Delivering Alternating Copolymers

2021

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Heteroatom‐containing polymers have strong potential as sustainable replacements for petrochemicals, show controllable monomer–polymer equilibria and properties spanning plastics, elastomers, fibres, resins, foams, coatings, adhesives, and self‐assembled nanostructures. Their current and future applications span packaging, house‐hold goods, clothing, automotive components, electronics, optical materials, sensors, and medical products. An interesting route to these polymers is the catalysed ring‐opening copolymerisation (ROCOP) of heterocycles and heteroallenes. It is a living polymerization, occurs with high atom economy, and creates precise, new polymer structures inaccessible by traditional methods. In the last decade there has been a renaissance in research and increasing examples of commercial products made using ROCOP. It is better known in the production of polycarbonates and polyesters, but is also a powerful route to make N‐, S‐, and other heteroatom‐containing polymers, including polyamides, polycarbamates, and polythioesters. This Review presents an overview of the different catalysts, monomer combinations, and polymer classes that can be accessed by heterocycle/heteroallene ROCOP.

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Section: Rocop Of So2 With Epoxidesmentioning

confidence: 99%

Heterocycle/Heteroallene Ring‐Opening Copolymerization: Selective Catalysis Delivering Alternating Copolymers

2021

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“…The absorption bonds at 758, 1,166, and 1,288 cm −1 confirmed the formation of sulfoxide and sulfone group. The vibrational bond of 758 cm −1 represents the sulfoxide group and 1,166 and 1,288 cm −1 represent the sulfone group . From the FT‐IR analysis, it was clearly understood that, the DBT sulfoxide and sulfone were obtained as an oxidized product after completion of DBT oxidation reaction.…”

Section: Methodsmentioning

confidence: 99%

Mechanistic investigation of Sono–Phosphotungstic acid/phase transfer agent assisted oxidative desulfurization of liquid fuel

Bal

Bhasarkar

2018

Asia-Pacific J Chem Eng

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The aim of this paper is to identify the physical and chemical mechanism of ultrasound in presence of phase transfer agent (PTA) and phosphotungstic acid on desulfurization process. With different experimental procedures, we made an effort to identify the individual effect of phase transfer agent and ultrasound on oxidative desulfurization. Ultrasound‐assisted process is the modern technique to enhance the kinetic of the liquid–liquid heterogeneous system. Physical and intrinsic properties of liquid fuels such as diffusivity of PTA‐cation complex and also through effect on cavitation have a strong influence on Desulfurization of liquid fuels. Due to low vapor pressure of solvents, the beneficial effect of higher static pressure (that eliminates cavitation effect) is not seen in present reaction system. Phase transfer agent or phosphotungustic acid‐assisted ultrasound desulfurization has radical and ionic reaction mechanism, which is revealed in terms of lower activation energy (energetic nature of radicals) as well as collision factor (due to instability of radicals) than magnetically stirred system. This study has revealed crucial mechanistic aspects of ultrasound assisted oxidative desulfurization in presence of phase transfer agent and phosphotungustic acid, which will give more insight for further research.

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“…The relationship between kinetic parameters and degree of conversion (α) can be found using the mass loss curves recorded during the TG measurements. For this reason, five tests at different heating rates (5,10,15,20, and 25°C/min) were carried out for each sample, and some of the recorded data are presented in Figs 7 and 8.…”

Section: Thermal Degradation Kineticsmentioning

confidence: 99%

“…[6][7][8][9] But different research groups choose different ways of polymerization, such as free radical polymerization, cationic polymerization, and coordination polymerization. [10,11] Effect of different polymerization methods on the copolymerization of olefins and sulfur dioxide has not been studied yet.…”

Section: Introductionmentioning

confidence: 99%

“…In recent research, various kinds of polymers have been synthesized by copolymerization of SO 2 with unsaturated hydrocarbons, such as vinyl butyl carbonate, norbornene, styrene, propylene oxide, diene, and vinyl chloride, and the formed polymers with high transparency, low dielectric constants, excellent chemical resistance, and good barrier properties, which are used as etching resists, transient electronic packaging, and drug delivery vehicles . But different research groups choose different ways of polymerization, such as free radical polymerization, cationic polymerization, and coordination polymerization . Effect of different polymerization methods on the copolymerization of olefins and sulfur dioxide has not been studied yet.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics and mechanism of the thermal degradation for the synthesis of poly(norbornene sulfone)s by two different polymerization methods

Liu

Guo

Zhi

et al. 2017

Polymers for Advanced Techs

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The recent development of sulfur dioxide (SO2) polymerization has seen a renaissance in its chemistry, especially poly(olefin sulfone)s from the copolymerization of SO2, and unsaturated hydrocarbons can be found to have many applications, including transient electronic packaging, drug delivery, and electron beam‐resistant materials. In this work, a type of functional poly(norbornene sulfone) was synthesized via two different polymerization methods. Aiming to understanding the effects of different polymerization methods on poly(olefin sulfone)s and gain further understanding on the kinetics of poly(olefin sulfone)s's thermal instability, we investigated their detailed thermal degradation behaviors using thermogravimetry and analyzed the resultant kinetics in accordance with three kinetic models. The results supported the conclusion that although the poly(norbornene sulfone)s obtained have different activation energy, the thermal degradation kinetics are the same and also obey the Dn type. Copyright © 2017 John Wiley & Sons, Ltd.

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Efficient alternating copolymerization of sulfur dioxide with cyclohexene oxide and a mechanistic understanding

Abstract: This work describes an efficient alternating copolymerization of sulfur dioxide with cyclohexene oxide using salenCrIIICl as catalyst. The effect of the temperature, time, and type of catalyst on the overall activity and selectivity was investigated.

Cited by 14 publications

References 33 publications

Heterocycle/Heteroallene Ring‐Opening Copolymerization: Selective Catalysis Delivering Alternating Copolymers

Heterocycle/Heteroallene Ring‐Opening Copolymerization: Selective Catalysis Delivering Alternating Copolymers

Mechanistic investigation of Sono–Phosphotungstic acid/phase transfer agent assisted oxidative desulfurization of liquid fuel

Kinetics and mechanism of the thermal degradation for the synthesis of poly(norbornene sulfone)s by two different polymerization methods

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