Preparation of new photo-crosslinked β-cyclodextrin polymer beads

Yamasaki, Hirohito; Odamura, Aya; Makihata, Yousuke; Fukunaga, Kimitoshi

doi:10.1038/pj.2016.127

Cited by 11 publications

(8 citation statements)

References 13 publications

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“…Generally, researchers employ diisocyanates such as diphenylmethane diisocyanate (MDI) [ 27 ] or hexamethylene diisocyanate (HDMI) [ 24 , 25 , 26 , 28 , 29 ] as the urethane sequences in order to prepare PEG-diisocyanate prepolymers, which are also used in crosslinking with cyclodextrins. Herein, the isocyanate (NCO) component of the polyaddition system, isophorone diisocyante (IPDI), was used for various organic coatings [ 30 ] and also in the preparation of cyclodextrin materials due to its low crosslinking propensity [ 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. One of the main reasons behind the frequent use of IPDI is related to the possibility of controlling the reaction process due to the particular chemical structure that endows the NCO groups with different reactivity at relatively low temperatures [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Hydroxyl Type on Crosslinking Process in Cyclodextrin Based Polyurethane Networks

Peptu¹,

Diaconu²,

Danu

et al. 2022

Gels

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The influence of the hydroxyl groups (OH) type on the polyaddition processes of isocyanates represents a critical approach for the design of multicomponent polyurethane systems. Herein, to prove the effect of hydroxyl nature on both the isocyanate-OH polyaddition reactions and the structure/properties of the resulting networks, two structurally different cyclodextrins in terms of the primary and secondary groups’ ratio were analyzed, namely native β-cyclodextrin (CD) and its derivative esterified to the primary hydroxyl groups with oligolactide chains (CDLA). Thus, polyurethane hydrogels were prepared via the polyaddition of CD or CDLA to isophorone diisocyanate polyethylene glycol-based prepolymers (PEG-(NCO)2). The degradable character of the materials was induced by intercalating oligolactide short sequences into the polymer chains composing the polymer network. In order to establish the influence of the OH type, the synthesis of polyurethane hydrogels was analyzed by a rheological investigation of the overall system reactivity. Materials properties such as swelling behavior, thermal properties and hydrolytic degradation were influenced by the reaction feed. Specifically, the presence of primary OH groups leads to more compact networks with similar water uptake, disregarding the CD content, while the predominance of secondary OH groups together with the presence of oligolactide spacers leads to the fine tuning of the water swelling properties.

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Section: Introductionmentioning

confidence: 99%

The Influence of the Hydroxyl Type on Crosslinking Process in Cyclodextrin Based Polyurethane Networks

Peptu¹,

Diaconu²,

Danu

et al. 2022

Gels

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“…(2) by copolymerization of polymerizable cyclodextrin derivatives with acrylic or vinyl monomers (Wimmer et al 1992;Janus et al 1999;He et al 2012); (3) or by grafting on a macromolecular support such as chitosan, cellulose, alginate, or silica (Crini et al 1995;Sakairi et al 1999;Aoki et al 2007;Chung and Chen 2009;Kono et al 2013;Omtvedt et al 2019;Yamasaki et al 2017).…”

Section: Removal Of Pharmaceuticals Using Cyclodextrin Bead Polymersmentioning

confidence: 99%

Removal of emerging contaminants from wastewater using advanced treatments. A review

et al. 2022

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The rise of emerging contaminants in waters challenges the scientific community and water treatment stakeholders to design remediation techniques that are simple, practical, inexpensive, effective, and environmentally friendly. Emerging contaminants include antibiotics, hormones, illicit drugs, endocrine disruptors, cosmetics, personal care products, pesticides, surfactants, industrial products, microplastics, nanoparticles, and nanomaterials. Removing those contaminants is not easy because classical wastewater treatment systems are not designed to handle emerging contaminants, and contaminants often occur as traces in complex organo-mineral mixtures. Here, we review advanced treatments for the removal of emerging contaminants in wastewater, with focus on adsorption-oriented processes using non-conventional adsorbents such as cyclo-dextrin polymers, metal-organic frameworks, molecularly imprinted polymers, chitosan, and nanocellulose. We describe biological-based technologies for the degradation and removal of emerging contaminants. Then, we present advanced oxida-tion processes as the most promising strategies because of their simplicity and efficiency.

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“…Yamasaki et al modified cyclodextrin with isophorone diisocyanate and 2-hydroxyethyl acrylate to obtain photocrosslinked cyclodextrin [71]. Microspheres of the prepared photocrosslinked polymer showed good separation efficiency for phenol (Figure 2c) [72]. Glucan is a homopolysaccharide formed with glycosidic linkages between glucose.…”

Section: Polysaccharidesmentioning

confidence: 99%

Current Understanding of the Applications of Photocrosslinked Hydrogels in Biomedical Engineering

Liu

Chen

et al. 2022

Gels

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Hydrogel materials have great application value in biomedical engineering. Among them, photocrosslinked hydrogels have attracted much attention due to their variety and simple convenient preparation methods. Here, we provide a systematic review of the biomedical-engineering applications of photocrosslinked hydrogels. First, we introduce the types of photocrosslinked hydrogel monomers, and the methods for preparation of photocrosslinked hydrogels with different morphologies are summarized. Subsequently, various biomedical applications of photocrosslinked hydrogels are reviewed. Finally, some shortcomings and development directions for photocrosslinked hydrogels are considered and proposed. This paper is designed to give researchers in related fields a systematic understanding of photocrosslinked hydrogels and provide inspiration to seek new development directions for studies of photocrosslinked hydrogels or related materials.

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Preparation of new photo-crosslinked β-cyclodextrin polymer beads

Cited by 11 publications

References 13 publications

The Influence of the Hydroxyl Type on Crosslinking Process in Cyclodextrin Based Polyurethane Networks

The Influence of the Hydroxyl Type on Crosslinking Process in Cyclodextrin Based Polyurethane Networks

Removal of emerging contaminants from wastewater using advanced treatments. A review

Current Understanding of the Applications of Photocrosslinked Hydrogels in Biomedical Engineering

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