Effect of polymerization conditions on the polymer properties of CO2-cyclohexene oxide copolymer prepared by double metal cyanide catalyst

Oh, Hyung Jin; Ko, Young Soo

doi:10.1016/j.jiec.2013.03.002

Cited by 10 publications

(7 citation statements)

References 16 publications

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“…9−12 Notably, DMC catalysts exhibit negligible catalytic activity in the copolymerization of PO and CO 2 without a complexing agent. 9,13,14 The present study reveals two significant developments in the synthesis and use of CO 2 -based polyols. First, the calcination temperature of the DMC catalysts was optimized to explore its impact on the catalytic efficiency during the copolymerization of PO and CO 2 .…”

Section: ■ Introductionmentioning

confidence: 87%

“…They are synthesized via the reaction of a metal salt (zinc chloride) with a metal cyanide potassium salt (potassium hexacyanocobaltate) in aqueous solution, resulting in a compound with a typical formula of Zn 3 [Co(CN) 6 ] 2 · x ZnCl 2 · y H 2 O . To enhance catalytic activity and ensure amorphous characteristics, a complexing agent such as an ester, alcohol, or surfactant is added to the synthesis mixture. − Notably, DMC catalysts exhibit negligible catalytic activity in the copolymerization of PO and CO 2 without a complexing agent. ,, …”

Section: Introductionmentioning

confidence: 99%

“…Because the catalytic copolymerization of PO and CO 2 is typically conducted at elevated temperatures (approximately 115–130 °C), selecting the appropriate calcination temperature for the DMC catalyst is crucial. Lower reaction temperatures result in insufficient catalyst activation, while higher temperatures can lead to the thermal decomposition of the polymer, compromising catalyst stability and selectivity. ,, Hence, this study determined the catalytic performance of DMC catalysts prepared at different calcination temperatures. To simplify the catalyst preparation method while achieving high catalytic performance, only the Pluronic P123 (P123) was used as the complexing agent, unlike in previous studies, ,,, which also employed cocomplexing agents.…”

Section: Introductionmentioning

confidence: 99%

“… 9 − 12 Notably, DMC catalysts exhibit negligible catalytic activity in the copolymerization of PO and CO 2 without a complexing agent. 9 , 13 , 14 …”

Section: Introductionmentioning

confidence: 99%

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Enhanced Double Metal Cyanide Catalysts for Modulating the Rheological Properties of Poly(propylene carbonate) Polyols by Modifying Carbonate Contents

Kim,

Lee,

Hwang

et al. 2023

ACS Omega

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Poly(propylene carbonate) (PPC) polyol is an environmentally sustainable material derived from abundant and renewable greenhouse gas, CO 2 . Optimizing their synthesis and properties is crucial to their application in the production of polyurethane products. In this study, we synthesized PPC polyols with varying carbonate contents using heterogeneous Zn/Co double metal cyanide (DMC) catalysts, which were prepared with poly(ethylene glycol)-block-poly(propylene glycol)-block-poly-(ethylene glycol) (P123) as an effective complexing agent. Analysis of the influence of calcination temperature revealed that the DMC-P123 catalyst calcined at 100 °C exhibited superior catalytic performance owing to reduced crystallinity and enhanced formation of the monoclinic phase. Additionally, by precisely controlling the CO 2 pressure, high propylene carbonate contents of up to 32.8 wt % in the polyol structure were achieved. The increased carbonate content enhanced the intermolecular attraction between polyol chains, thereby promoting hydrogen bonding and significantly modulating the rheological properties of the polyol. The novel findings of this study establish a solid foundation for the synthesis of CO 2 -based polyols with desirable properties, serving as alternatives to conventional petroleum-based polyols.

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Section: ■ Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“… 9 − 12 Notably, DMC catalysts exhibit negligible catalytic activity in the copolymerization of PO and CO 2 without a complexing agent. 9 , 13 , 14 …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced Double Metal Cyanide Catalysts for Modulating the Rheological Properties of Poly(propylene carbonate) Polyols by Modifying Carbonate Contents

Kim,

Lee,

Hwang

et al. 2023

ACS Omega

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“…To date substantial amount of literatures are available revealing different types of outstanding catalyst for the copolymerization process (Ang et al, 2015;Meng et al, 2016;Trott et al, 2016) ever since their discovery. Simultaneously, a number of epoxides and diverse operating conditions for the coupling of CO 2 and epoxides have been reported by devoted researchers (Dai et al, 2016;Darensbourg and Chung, 2014;Oh and Ko, 2013;Sebastian and Srinivas, 2014;Tang et al, 2013). Despite of the countless references available in this field, very few reported on the utilization of renewable bio-resources specifically vegetable oil-based epoxide in copolymerization with CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of vegetable-oil based polymer by terpolymerization of epoxidized soybean oil, propylene oxide and carbon dioxide

Shaarani

Bou

2017

Science of The Total Environment

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Although carbon dioxide (CO) is well known as one of the major green-house gases, it is also an economical C1 resource. Thus, CO has been regarded as an appealing starting material for the synthesis of polymers, like polycarbonates by the reaction with epoxides. Herein the reaction between natural epoxidized soybean oil (ESO), propylene oxide (PO) and CO under high pressure (4.0MPa) with the presence of Co-Zn double metal cyanide (Co-Zn DMC) catalyst was studied. Temperature and reaction time were varied accordingly and the products obtained were characterized by FTIR, GPC and H NMR. The results obtained indicate the formation of polycarbonates in the samples collected with yields vary from 60 to 85%. The number average molecular weight (M) of the resultant polymer prepared at reaction temperature of 80°C and reaction time of 6h can reach up to 6498g/mol.

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Effects of addition mode on Zn–Co double metal cyanide catalyst for synthesis of oligo(propylene‐carbonate) diols

Ning

et al. 2018

Applied Organom Chemis

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Zn-Co double metal cyanide (DMC) complexes are promising catalytic systems for copolymerization of epoxide and CO 2 . In the work reported, Zn-Co DMC catalysts were prepared by parallel-flow dropping, forward dropping and reverse dropping methods, aiming to provide an insight into the effect of addition mode on catalyst structure and catalytic performance. Catalytic properties were evaluated using the copolymerization reaction of propylene oxide (PO) and CO 2 in the presence of chain transfer agent. The results indicated that the factors that affect crystalline state are different for different modes. And excess zinc chloride is the prerequisite for organic ligands to be retained in the catalyst and affect the structure. In addition, a catalyst with flower-like morphology was obtained with the parallel-flow dropping method which provided larger surface area. An appropriate O/Zn value ensured abundant active PO which would suppress the backbiting process by forming consecutive PO units adjacent to CO 2 units. Oligo(propylene-carbonate) diols with average molecular weight of 1020 g mol −1 , CO 2 incorporation of 24.92% and W PC of 5.14 wt% were obtained at 80°C and 2 MPa.

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Effect of polymerization conditions on the polymer properties of CO2-cyclohexene oxide copolymer prepared by double metal cyanide catalyst

Cited by 10 publications

References 16 publications

Enhanced Double Metal Cyanide Catalysts for Modulating the Rheological Properties of Poly(propylene carbonate) Polyols by Modifying Carbonate Contents

Enhanced Double Metal Cyanide Catalysts for Modulating the Rheological Properties of Poly(propylene carbonate) Polyols by Modifying Carbonate Contents

Synthesis of vegetable-oil based polymer by terpolymerization of epoxidized soybean oil, propylene oxide and carbon dioxide

Effects of addition mode on Zn–Co double metal cyanide catalyst for synthesis of oligo(propylene‐carbonate) diols

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