Recent Advances of Porous Materials Based on Cyclodextrin

Feng, Junfeng; Tan, Min; Zhang, Sheng; Li, Bang‐Jing

doi:10.1002/marc.202100497

Cited by 20 publications

(14 citation statements)

References 106 publications

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“…LOI test results are better than other phytic acid based biological flame retardants and other types of biological flame retardants. [ 27–30 ] The flame retardant results could effectively meet the flame retardant requirements. With the further increase of temperature, the flame retardant performance of flame retardant plywood did not further improve, and the LOI value of plywood decreased after the anti‐loss test.…”

Section: Resultsmentioning

confidence: 99%

“…However, the LOI value of 170 BF-A plywood treated with BF-A decreased to 24.3% after the anti-loss test, which could not meet the flame retardant requirements. At 170 °C, the LOI values of plywood treated with BF-B flame retardant solution before and after the anti-loss test were 42.3% and [27][28][29][30] The flame retardant results could effectively meet the flame retardant requirements. With the further increase of temperature, the flame retardant performance of flame retardant plywood did not further improve, and the LOI value of plywood decreased after the anti-loss test.…”

Section: Flame Retardancy Of In Situ Polymerized Flame Retardant and ...mentioning

confidence: 96%

See 1 more Smart Citation

In Situ Polymerization and Flame Retardant Mechanism of Bio‐Based Nitrogen and Phosphorus Macromolecular Flame Retardant in Plywood

Yang

Zhang

2022

Macromol. Rapid Commun.

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To improve the flame retardant performance of plywood and reduce the reagent loss and moisture absorption of the flame retardant, a bio-based supramolecular flame retardant is prepared by vacuum-pressure impregnation and high-temperature in situ polymerization in plywood. The best value of bonding strength appears at 170 °C, and the limiting oxygen index (LOI) of 170BF-B plywood is 42.3%. After hot pressing, the moisture absorption rate of the 170BF-B veneer is only 18.51%, while the loss resistance rate achieves 83.45%. Its residue at 700 °C is 91.36% higher than that of poplar veneer. In the combustion process, the peak value of heat release rate (PHRR) and heat release rate (HRR) of 170BF-B plywood are only 10.69% and 37.11% of that of untreated plywood. After combustion, an intumescent flame retardant layer exhibits a graphitization trend. In the flame retardant layer, there are not only functional groups, such as P═O, PO 4 3− , P-O-C decomposed by flame retardant but also characteristic functional groups of wood fiber, like C═O, C-H, etc. The prepolymer BF-B, which is composed of phytic acid, urea, and dicyandiamide polymerized with chitosan or lignocellulose to form a supramolecular flame retardant connected with P-O-C and P-O-N functional groups, thus improving the flame retardant and anti-loss property by in situ polymerization.

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Section: Resultsmentioning

confidence: 99%

Section: Flame Retardancy Of In Situ Polymerized Flame Retardant and ...mentioning

confidence: 96%

In Situ Polymerization and Flame Retardant Mechanism of Bio‐Based Nitrogen and Phosphorus Macromolecular Flame Retardant in Plywood

Yang

Zhang

2022

Macromol. Rapid Commun.

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“…CDs-based aerogels with excellent performance and multiple functions should be further studied and developed. Particularly, CDs can be combined with more organic/inorganic materials to prepare hybrid aerogels with specific functions. − In addition, the research of CDs-based aerogels in thermal insulation, adsorption of environmental pollutants, electrochemical sensors as well as other frontier applications including biomedicine, semiconductor, and magnetic materials should be further developed. ,− …”

Section: Discussionmentioning

confidence: 99%

Cyclodextrin-Based Aerogels: A Review of Nanomaterials Systems and Applications

Liu

Cao

Zhou

et al. 2022

ACS Appl. Nano Mater.

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Aerogels are a class of porous nanomaterial with prominent properties such as low density, high porosity, large specific surface area, and adjustable surface chemistry. It is a challenge to accurately control hierarchically porous structures of aerogels, efficiently make aerogels stimuli-responsive in the solid state, and fully endow them with desirable features. As unique macrocyclic compounds, cyclodextrins (CDs) could be employed as building blocks to produce aerogels with fascinating structures and composite functionalities due to their various advantages including being biodegradable, their intrinsic nanocavities, intriguing self-assembling properties, and host–guest interaction. Considering the arising development in the study of CDs-based aerogels, recent research progress in this field is summarized here. Initially, we will analyze different synthesis methods for the construction of CDs-based aerogels, such as a sol–gel process and a drying process. Furthermore, various types of CDs-based aerogels are analyzed and discussed briefly, including CDs-based polypseudorotaxanes /polyrotaxanes aerogels, CDs-based cross-linked aerogels, and CDs-based hybrid aerogels. Finally, the current applications of CDs-based aerogels in thermal insulation, adsorption of environmental pollutants, and electrochemical sensors are summarized in detail, and the future development trends of such hybrid materials are described to assist researchers to find opportunities in this field.

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“…Materials with nanoporous structure can be used in catalysis, gas separation, and sensors due to their abundant compositions and architectures. [ 115 ] While the processability is still a challenge in this system because the prepared porous structures are generally connected by coordination or covalent bonds, resulting in the lack of flexibility. [ 116 ] So, it is important to build materials such as supramolecular gels with a soft connection style, which benefits the improvement of the processability.…”

Section: Applications Of Poms‐containing Supramolecular Gelsmentioning

confidence: 99%

Polyoxometalate‐Containing Supramolecular Gels

Xuan

2022

Macromol. Rapid Commun.

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Supramolecular gels are important soft materials with various applications, which are fabricated through hydrogen bonding, π–π stacking, electrostatic interactions, or host–guest interactions. Introducing functional groups, especially inorganic components, is an efficient strategy to obtain gels with robust architecture and high performance. Polyoxometalates (POMs), as a class of negatively‐charged clusters, have defined structures and multiple interaction sites, resulting in their potential as building blocks for constructing POM‐containing supramolecular gels. The introduction of POMs into gels not only provides strong driving forces for the formation of gels due to the characteristics of charged cluster and oxygen‐rich surface, but also brings new properties sourcing from the unique electronic structures of POMs. Though many POM‐containing gels have been reported, a comprehensive review is still absent. Herein, the concept of POM‐containing gels is discussed, following with the design strategies and driving forces. To better understand the results in the literature, detailed examples, which are classified into several categories based on the types of organic components, are presented to illustrate the gelation process and gel structures. Moreover, applications of POM‐containing gels in energy chemistry, sustainable chemistry, and other aspects are also reviewed, as well as the future developments of this field.

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Recent Advances of Porous Materials Based on Cyclodextrin

Cited by 20 publications

References 106 publications

In Situ Polymerization and Flame Retardant Mechanism of Bio‐Based Nitrogen and Phosphorus Macromolecular Flame Retardant in Plywood

In Situ Polymerization and Flame Retardant Mechanism of Bio‐Based Nitrogen and Phosphorus Macromolecular Flame Retardant in Plywood

Cyclodextrin-Based Aerogels: A Review of Nanomaterials Systems and Applications

Polyoxometalate‐Containing Supramolecular Gels

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