Improving the thermal stability of poly(cyclohexylene carbonate) by in situ end-capping

Wang, Jin‐Yuan; Hu, Haibo; Jin, Jie; Cui, Yanjun; Tang, Jinsong

doi:10.1007/s00289-021-03792-w

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…Thermogravimetric analysis reveals excellent thermal stability of all three polymers prepared, with T 5% exceeding 240 °C, and complete decomposition occurring only at elevated temperatures. Notably, in comparison to other terpene-based polycarbonates, all of these PCs exhibit superior thermal stability when contrasted with the known limonene oxide-based polycarbonate. , PGeraGEC shows similar thermal stability compared to poly(cyclohexene carbonate) . The increased T 5% observed for PGeraGEC and PNerGEC could potentially be attributed to the occurrence of cross-linking reactions involving the double bonds during heating process.…”

Section: Resultsmentioning

confidence: 92%

“…18,19 PGeraGEC shows similar thermal stability compared to poly(cyclohexene carbonate). 61 The increased T 5% observed for PGeraGEC and PNerGEC could potentially be attributed to the occurrence of cross-linking reactions involving the double bonds during heating process. This phenomenon may result in the formation of an expanded, cross-linked polymer network, ultimately enhancing the thermal stability of the materials.…”

Section: Copolymerization Of Gerage and Nerge With Comentioning

confidence: 99%

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CO₂-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

Holzmüller,

Gardiner,

Preis

et al. 2024

Macromolecules

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The urgent demand for more sustainable materials has led to significant research in the field of CO2-based polymers. This work describes monomer synthesis, polymerization, and polymer properties of long chain terpenoid- and CO2-based polycarbonates. Utilizing (R,R)-(salcy)-Co(III)Cl (Co(Salen)Cl) and bis(triphenylphosphine)iminium chloride ([PPN]Cl) as a binary catalytic system, high molar mass polymers (up to 46.4 kg mol–1) were achieved with narrow dispersities (M w/M n < 1.13) via solvent-free bulk polymerization. Crucially, synthesis of these high molar mass polycarbonates necessitates a reactor design featuring low reactor/gas volumes, as well as CO2 with very low content of water, a requirement that is independent of the specific monomer employed. For this reason, an extensive evaluation of reactor/gas volume and predrying of CO2 was conducted to achieve narrow molar mass distributions. A glass transition temperature range between −43 and −29 °C was achieved by employing both saturated and unsaturated terpenoids. When combining various terpenoid-based monomers, an ideally random terpolymerization was observed, confirmed by offline 1H NMR kinetics. The resulting copolymers characterized by double bonds in their polymer side chains are addressable for further postmodification reactions. Owing to their good thermal stability and low T g values, the absence of cross-linking reactions and high molar masses, these flexible long chain terpenoid-based polycarbonates emerge as highly promising candidates for use as soft segments in thermoplastic elastomers.

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Section: Resultsmentioning

confidence: 92%

Section: Copolymerization Of Gerage and Nerge With Comentioning

confidence: 99%

CO₂-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

Holzmüller,

Gardiner,

Preis

et al. 2024

Macromolecules

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show abstract

“…[29][30][31] In contrast, poly(cyclohexene carbonate) (PCHC) derived from the copolymerization of CO 2 /CHO shows a high T g of above 110 °C with good mechanical strength, but suffers from high brittleness. [32][33][34] To address this issue, the Koning group reported the introduction of vinyl groups into PCHC for the preparation of UV-curing films, showing superior acetone resistance and reversed impact toughness. 35 Wang 36 and Lu 37 reported the incorporation of terminal epoxides with different alkyl chains into the PCHC backbone to improve the toughness.…”

Section: Introductionmentioning

confidence: 99%

From plastic to elastomers: introducing reversible copper–thioether coordination in CO₂-based polycarbonate

Zhuo

Liu

et al. 2023

Polym. Chem.

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Influencing Factors on Li‐ion Conductivity and Interfacial Stability of Solid Polymer Electrolytes, Exampled by Polycarbonates, Polyoxalates and Polymalonates

Xie

Wang

et al. 2023

Angewandte Chemie

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The application of solid polymer electrolytes (SPEs) in all‐solid‐state(ASS) batteries is hindered by lower Li+‐conductivity and narrower electrochemical window. Here, three families of ester‐based F‐modified SPEs of poly‐carbonate (PCE), poly‐oxalate (POE) and poly‐malonate (PME) were investigated. The Li+‐conductivity of these SPEs prepared from pentanediol are all higher than the counterparts made of butanediol, owing to the enhanced asymmetry and flexibility. Because of stronger chelating coordination with Li+, the Li+‐conductivity of PME and POE is around 10 and 5 times of PCE. The trifluoroacetyl‐units are observed more effective than −O−CH2−CF2−CF2−CH2−O− during the in situ passivation of Li‐metal. Using trifluoroacetyl terminated POE and PCE as SPE, the interfaces with Li‐metal and high‐voltage‐cathode are stabilized simultaneously, endowing stable cycling of ASS Li/LiNi0.6Co0.2Mn0.2O2 (NCM622) cells. Owing to an enol isomerization of malonate, the cycling stability of Li/PME/NCM622 is deteriorated, which is recovered with the introduce of dimethyl‐group in malonate and the suppression of enol isomerization. The coordinating capability with Li+, molecular asymmetry and existing modes of elemental F, are all critical for the molecular design of SPEs.

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Improving the thermal stability of poly(cyclohexylene carbonate) by in situ end-capping

Cited by 5 publications

References 25 publications

CO₂-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

CO₂-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

From plastic to elastomers: introducing reversible copper–thioether coordination in CO₂-based polycarbonate

Influencing Factors on Li‐ion Conductivity and Interfacial Stability of Solid Polymer Electrolytes, Exampled by Polycarbonates, Polyoxalates and Polymalonates

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Improving the thermal stability of poly(cyclohexylene carbonate) by in situ end-capping

Cited by 5 publications

References 25 publications

CO2-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

CO2-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

From plastic to elastomers: introducing reversible copper–thioether coordination in CO2-based polycarbonate

Influencing Factors on Li‐ion Conductivity and Interfacial Stability of Solid Polymer Electrolytes, Exampled by Polycarbonates, Polyoxalates and Polymalonates

Contact Info

Product

Resources

About

CO₂-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

CO₂-Based Polycarbonates with Low Glass Transition Temperatures Sourced from Long-Chain Terpenes

From plastic to elastomers: introducing reversible copper–thioether coordination in CO₂-based polycarbonate