Cyclodextrin cross-linked polymer monolith for efficient removal of environmental pollutants by flow-through method

Mizuno, Shunsuke; Asoh, Taka‐Aki; Takashima, Yoshinori; Harada, Akira; Uyama, Hiroshi

doi:10.1016/j.polymdegradstab.2018.12.014

Cited by 13 publications

(7 citation statements)

References 30 publications

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“…The traditional treatments for removing polymer pollutants from wastewater can be classified into three representative methods: (i) solidifying and separating from water by coagulation, flocculation, and precipitation, (ii) detoxication treatments such as chemical oxidation and photodegradation, and (iii) adsorption using solid adsorbents like an activated carbon. [ 43,44 ] However, the polymer pollutants with high viscosity and low fluidity are easy to adhere to a solid substrate, so they are difficult to be removed from water effectively and on a large scale by using these common methods. Recently, we proposed the concept of “underwater superpolymphobicity” that a surface greatly repels liquid polymers in water.…”

Section: Results and Disscussionmentioning

confidence: 99%

Superwettability‐based separation: From oil/water separation to polymer/water separation and bubble/water separation

et al. 2021

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The separation of oil/water mixtures, polymer/water mixtures, or bubble/water mixtures has broad applications. In this paper, we aim at extending the well‐developed wettability‐based oil/water separation strategy to separate the mixtures of liquid polymers and water and separate bubbles from water. The micro/nanostructures are simply produced on a stainless steel mesh by femtosecond laser treatment to endow the mesh with superhydrophilicity in the air and superoleophobicity, superpolymphobicity, and superaerophobicity in water. The underwater superoleophobicity, superpolymphobicity, and superaerophobicity enable the structured mesh to have the ability of oil/water separation, polymer/water separation, and bubble/water separation. Water can pass through the mesh due to the superhydrophilicity of the laser‐structured mesh. Whereas, the oils, the liquid polymers, and the bubbles in water are intercepted by the structured mesh because such a water‐wetted mesh has strong repellence to oils (underwater superoleophobicity), liquid polymers (underwater superpolymphobicity), and bubbles (underwater superaerophobicity). As a result, the oil, the liquid polymer, and the bubble are successfully separated from water by using the as‐prepared superwetting mesh. We believe that the diversified wettability‐based separation processes will have wide potential applications in environmental protection, energy utilization, industrial manufacture, agricultural production, and so on.

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Section: Results and Disscussionmentioning

confidence: 99%

Superwettability‐based separation: From oil/water separation to polymer/water separation and bubble/water separation

et al. 2021

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“…Different authors have used a nucleophilic scavenging agent, synthesis ureas, thioureas amides, sulfonamides, and carbamates to remove the excess isocyanate, isocyanide, isociamide, acyl chloride, or sulfonyl chlorides [10,11]. Scavenger resins, depending on their structure and functionalities, can be used for scavenging of: anhydride [12], acid chloride [13], amines [14,15], esters, epoxides [16,17], aldehydes and ketones [18,19], miscellaneous compounds [20], for metal removal from a reaction mixture [21], functionalized with gold nanoparticles [22], for efficient removal of environmental pollutants [23], in the field of culture heritage to clean surfaces for art conservation and restoration [24], preventing paper documents [25] and many others [26]. The majority usually used method of forming HIPEs is through the slow addition of a porogen (non-continuous phase) to the continuous phase with mixing, although other methods can be used [27].…”

Section: A (Excess) + Bmentioning

confidence: 99%

Preparation of PolyHIPE monolithic materials functionalization by tris(2-aminoethyl)amine

2021

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The developments of monolithic materials rapidly in nowadays hold an impressively strong position in separation science as well as in other areas of chemistry. In this research are presented functionalization of PolyHIPE monolithic materials by tris(2-aminoethyl) amine. Monolithic polymer supports and scavengers were synthesized via nucleophilic displacement of chlorine in poly(4-vinyl benzyl chloride-co-divinylbenzene) as PolyHIPE materials. Porous copolymers of DVB/DVB were prepared by emulsion templating using high internal phase emulsions (HIPEs) as precursors for monoliths. The properties of the final products synthesized were functionalized with an amino group, at a different ratio of amine/chloromethyl groups, in different time refluxed were explored. PolyHIPE functionalized with tris(2-aminoethyl)amine to yield a product with high degrees of conversion. The extent of the functionalization reactions was investigated by a range of qualitative and quantitative techniques: FTIR, CHN analysis, potentiometric measurements, and (BET) measurements have been performed.

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“…Uyama 和 Harada 等 [69] [71] . 以 HDI 扩链的聚四氢呋喃聚氨酯为臂, α-CD 为核, Maiti 等 [72] 合成了生物相容性好的 CD-聚氨酯星型聚合物并研究了其抗癌药物的负载和释放性能.…”

Section: 环糊精交联聚合物(Crosslinked Cdp)unclassified

Advances in Cyclodextrin Polymers and Their Applications in Biomedicine

Qie¹,

Hao²,

Liu³

et al. 2020

Acta Chim. Sinica

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Cyclodextrins (CDs) are a family of macrocyclic oligosaccharides composed of α-1,4-linked D-glucopyranose units. The most commonly used CDs are α-, β-, and γ-CD, which consist of 6, 7, and 8 D-glucose units, respectively. They possess a relative hydrophobic inner cavity and a hydrophilic outer surface and can form inclusion complexes with various small molecules, metal ions and polymers, tailoring the physicochemical property of the guests, and thus have been widely used in the fields of pharmacy, food, chemistry, chromatography, catalysis, biotechnology, agriculture, cosmetics, hygiene, medicine, textiles and the environment, etc. However, it is difficult to manipulate the native CDs in some specific applications, they are crystallized solid and soluble in water but insoluble in most organic solvents. CD polymers (CDPs), such as crosslinked CDs or CD based hydrogels with various crosslinkers by chemical reactions, and CD based supramolecular polymers formed by physical interactions, can achieve the integration effect and synergy effect of CDs, crosslinkers and guest polymers, not only possessing the inclusion capacity of CDs, but also endowing CDs with other properties introduced by crosslinkers. The CDPs can be easily manipulated and they exhibit unique features that native CDs are lack of. Hence, the design, synthesis and applications of CDPs have attracted broad interests in recent years. This review focuses on the recent progress in CDPs, and different types of CDPs are identified and classified based on the structures and functions, namely CD based polyrotaxane, grafted CDs, crosslinked CDs and linear CDs, etc. Besides, the synthetic methodologies of CDPs are highlighted. Particular attention is paid to the breakthrough on the CDPs in the past five years, and their applications in biomedicine, such as drug delivery, gene delivery, target delivery, controlled release and cell imaging are discussed in detail. The typical applications in other fields such as absorption, environment remediation, thermal insulation, catalysis and slid-ring gels are also discussed in brief. Finally, the review provides brief summary and prospect of CDPs. Keywords cyclodextrin; polymer; chemical crosslinking; drug carrier; supramolecular self-assembly 1 引言环糊精(cyclodextrin, 简称 CD)是一类由吡喃葡萄糖单元通过 α-1,4-糖苷键链接而成的大环分子, 具有疏水空腔和亲水外壁的中空圆台状立体结构, 能够通过包结作用(encapsulation)与多种小分子和聚合物形成主-客体(host-guest)包结物(inclusion complexes), 从而实现对客体分子物理和化学性能的调控, 被广泛用于制药、食

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Cyclodextrin cross-linked polymer monolith for efficient removal of environmental pollutants by flow-through method

Cited by 13 publications

References 30 publications

Superwettability‐based separation: From oil/water separation to polymer/water separation and bubble/water separation

Superwettability‐based separation: From oil/water separation to polymer/water separation and bubble/water separation

Preparation of PolyHIPE monolithic materials functionalization by tris(2-aminoethyl)amine

Advances in Cyclodextrin Polymers and Their Applications in Biomedicine

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