Preparation and long term stability studies of carbon dioxide adsorbents based on hyperbranched polymers

Parzuchowski, Paweł G.; Magdalena, Mazurek; Świderska, Aleksandra; Roguszewska, Marlena; Rolińska, Karolina; Wołosz, Dominik

doi:10.14314/polimery.2020.3.2

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…Scheme shows the way of its preparation. The syntheses were performed according to previously reported procedures. ,, Shortly, ring-opening polymerization of epoxy monomers was used to obtain a polyglycerol containing phthalimide residues, which were cleaved using hydrazine hydrate. The resulting amine groups were then reacted with iodomethane in the presence of potassium carbonate.…”

Section: Resultsmentioning

confidence: 99%

Moisture- and Temperature-Responsive Polyglycerol-Based Carbon Dioxide Sorbents—The Insight into the Absorption Mechanism for the Hydrophilic Polymer

et al. 2020

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This article reports the preparation and characterization of CO 2 sorbents based on hyperbranched polyglycerol containing trimethylammonium hydroxide groups. The influence of humidity and temperature on the capture/release properties of the sorbents is presented. The presence of humidity showed to be critical for the absorption of carbon dioxide. The full sorption capacity was achieved for a moderate relative humidity of 20−40%. Investigated materials were capable of capturing up to 42 mg of CO 2 per gram in the form of bicarbonate moieties. Approximately 20% (up to 8.2 mg/g) of this amount could be then reversibly desorbed and absorbed under various conditions. The typical size of the humidity or temperature swing was estimated to be in the range of 0.9−1.1 mg of CO 2 per 1 g per hour. In the case of humidity swing, the absorption and desorption times were on comparable levels. In the case of thermal desorption, a short temperature impulse was only needed to fully regenerate the bed. The presented results show that the release of captured CO 2 is also possible under dry conditions, which supports the old bicarbonate/ carbonate-exchange mechanism. For humid conditions, both old and recently published new mechanisms may be applied, showing that the nature of this process is more complex than expected and depends on many inter-related factors. The investigated sorbents showed to be stable for several capture/release cycles and are promising materials for CO 2 capture.

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Section: Resultsmentioning

confidence: 99%

Moisture- and Temperature-Responsive Polyglycerol-Based Carbon Dioxide Sorbents—The Insight into the Absorption Mechanism for the Hydrophilic Polymer

et al. 2020

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“…40-49% of nitrogen atoms present in the sample, being involved in the sorption process. The A-HBPG-containing sorbents are stable for at least 17 adsorption-desorption cycles, provided that the desorption is performed in an oxygen-free atmosphere [77].…”

Section: Reversible Carbon Dioxide Capturementioning

confidence: 99%

Polymeric Materials Based on Carbon Dioxide: A Brief Review of Studies Carried Out at the Faculty of Chemistry, Warsaw University of Technology

et al. 2022

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Carbon dioxide is an important raw material in many industrial technologies, but it is also one of the greenhouse gases that has to be effectively removed from the environment. This contribution provides a brief overview of carbon dioxide-based polymers developed in the laboratories of the Faculty of Chemistry at Warsaw University of Technology. We present some simple and versatile synthetic approaches that can be used to prepare a library of oligocarbonate diols, polycarbonates, poly(ester-carbonates), poly(ether-carbonates) and various types of polyurethanes, including the newly emerging family of environmentally friendly non-isocyanate polyurethanes. The main synthesis strategy involves the reaction of CO2 with oxiranes to form five-membered cyclic carbonates, which can be utilized as a source of carbonate bonds in polymeric materials obtained by the ester exchange reactions and/or step-growth polyaddition. We also show that cyclic carbonates are valuable starting materials in the synthesis of hyperbranched polymers and polymer networks. The properties of several CO2-based polymers are presented and their potential application as biomaterials, smart materials, and absorbers with a high CO2 capture capacity is discussed.

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“…In contrast, the NIPUs’ precursors are not phosgene-based and are not moisture sensitive. Furthermore, they can be obtained from carbon dioxide—a greenhouse gas that is easily accessible [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Non-Isocyanate Aliphatic–Aromatic Poly(carbonate-urethane)s—An Insight into Transurethanization Reactions and Structure–Property Relationships

Wołosz¹

2022

IJMS

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This study reveals insights into the transurethanization reactions leading to the aliphatic–aromatic non-isocyanate poly(carbonate-urethane)s (NIPCUs) and their structure–property relationships. The crucial impact of the alkyl chain length in 4,4′‑diphenylmethylene bis(hydroxyalkyl carbamate) (BHAC) on the process of transurethanization reactions was proved. The strong susceptibility of hydroxyethyl‑ and hydroxybutyl carbamate moieties to the back-biting side reactions was observed due to the formation of thermodynamically stable cyclic products and urea bonds in the BHACs and NIPCUs. When longer alkyl chains (hydroxypentyl-, hydroxyhexyl-, or hydroxydecyl carbamate) were introduced into the BHAC structure, it was not prone to the back‑biting side reaction. Both 1H and 13C NMR, as well as FT-IR spectroscopies, confirmed the presence of carbonate and urethane (and urea for some of the samples) bonds in the NIPCUs, as well as proved the lack of allophanate and ether groups. The increase in the alkyl chain length (from 5 to 10 carbon atoms) between urethane groups in the NIPCU hard segments resulted in the increase in the elongation at break and crystalline phase content, as well as the decrease in the Tg, tensile strength, and hardness. Moreover, the obtained NIPCUs exhibited exceptional mechanical properties (e.g., tensile strength of 40 MPa and elongation at break of 130%).

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Preparation and long term stability studies of carbon dioxide adsorbents based on hyperbranched polymers

Cited by 4 publications

References 14 publications

Moisture- and Temperature-Responsive Polyglycerol-Based Carbon Dioxide Sorbents—The Insight into the Absorption Mechanism for the Hydrophilic Polymer

Moisture- and Temperature-Responsive Polyglycerol-Based Carbon Dioxide Sorbents—The Insight into the Absorption Mechanism for the Hydrophilic Polymer

Polymeric Materials Based on Carbon Dioxide: A Brief Review of Studies Carried Out at the Faculty of Chemistry, Warsaw University of Technology

Non-Isocyanate Aliphatic–Aromatic Poly(carbonate-urethane)s—An Insight into Transurethanization Reactions and Structure–Property Relationships

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