Permanent fixation of β‐cyclodextrin on cotton surface—An assessment between innovative and established approaches

Agrawal, Piyush; Warmoeskerken, Marinus

doi:10.1002/app.35291

Cited by 13 publications

(7 citation statements)

References 20 publications

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“…Innovative, enzymatic coupling of especially synthesized 6-monodeoxy-6-mono(N-tyrosin-yl)-β-cyclodextrin was performed on cotton textile surface at low temperature. Alteration in surface topography has been observed for all β-CD treated samples [54]. Martel with co-workers coupled β-CD-MCT to chitosan, to obtain a chitosan derivative bearing cyclodextrin.…”

Section: Binding Of Cyclodextrins To Fibre Surfacesmentioning

confidence: 95%

Cyclodextrins in Textile Finishing

Vončina¹,

Vivod²

2013

Eco-Friendly Textile Dyeing and Finishing

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and (iv) separation of CDs from the mixture, their purification and crystallization. CGT-ase enzymes degrade the starch and starts intramolecular reactions without the water participation. In the process, cyclic (CDs) and acyclic dextrins are originated, which are oligosaccharides of intermediate size. CDs are formed by the link between units of glucopyranose. The union is made through glycosidic oxygen bridges by α-(1,4) bonds. The purification of αand γ-CDs increases the cost of production considerably, so that 97% of the CDs used in the market are β-CDs [2]. CDs ring structures act as hosts and form inclusion compounds with various small molecules. Such complexes can be formed in solutions, in a solid state as well as when cyclodextrins are linked to various surfaces. In all forms they can act as permanent or temporary hosts to small molecules that provide certain desirable attributes. In the textile field CDs may have many applications such as: absorption of unpleasant odours; they can complex and release fragrances, "skin-care-active" and bioactive substances. Further, various textile materials treated with cyclodextrins could be used as selective filters for adsorption of small pollutants from waste water [4]. After the discovery of CDs scientists considered them poisonous substances and their ability for complexes formation was only considered a scientific curiosity. Later on, research on CDs proved that they are not only non-toxic but they can be helpful for protecting flavours, vitamins and natural colours [2]. CDs already play a significant role in the textile industry and can be used in dyeing, surface modification, encapsulation, washing, and preparation of polymers and in fibre spinning. Since year 2000, β-CD has been introduced as a food additive in Germany. With respect to OECD experiments, this compound has shown no allergic impact. In the USA α-, β-and γ-CDs have obtained the GRAS list (FDA list of food additives that are 'generally recognized as safe') status and can be commercialized as such. In Japan α-, β-and γ-CDs are recognized as natural products and their commercialization in the food sector is restricted only by considerations of purity. In Australia and New Zealand α-and γ-CDs are classified as Novel Foods from 2003 and 2004, respectively. The recommendation of Joint FAO/WHO Expert Committee on Food Additives (JECFA) for a maximum level of β-CDs in foods is 5 mg/kg per day. For α-and γ-CDs no Acceptable Daily Intake (ADI) was defined because of their favourable toxicological profiles [2, 5]. Natural cyclodextrins and their hydrophilic derivatives are only able to permeate lipophilic biological membranes, such as the eye cornea, with considerable difficulty. All toxicity studies have demonstrated that orally administered cyclodextrins are practically non-toxic, due to lack of absorption from the gastrointestinal tract. The main properties of β-CD, the most important cyclodextrin in textile application are: less irritating than α-CD after i.m. injection, binds cholesterol, small amount (1...

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Section: Binding Of Cyclodextrins To Fibre Surfacesmentioning

confidence: 95%

Cyclodextrins in Textile Finishing

Vončina¹,

Vivod²

2013

Eco-Friendly Textile Dyeing and Finishing

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“…Cyclodextrins are capable of forming complexes with a wide range of molecules, but they cannot form a direct covalent bond with textile materials; therefore, some cyclodextrin derivatives have been synthesized with reactive groups to allow them to chemically bond to various substrates [122], as shown in Figure 5. fixing CDs into a textile substrate depends on different factors, the main ones being reactivity of the cyclodextrins to the final application, and the type of fiber [23,121].…”

Section: Preparation Of Cyclodextrinsmentioning

confidence: 99%

“…Several methods have been proposed for the permanent fixation of CDs into textile fibers, and in some cases, there is a need for a first step—the modification of the cyclodextrins—so that they can be incorporated into the fabric. The selection of the best method for fixing CDs into a textile substrate depends on different factors, the main ones being reactivity of the cyclodextrins to the final application, and the type of fiber [ 23 , 121 ].…”

Section: Application Of Cyclodextrins In the Textile Areamentioning

confidence: 99%

The Role of β-Cyclodextrin in the Textile Industry—Review

Bezerra

Arias²,

Firmino

et al. 2020

Molecules

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β-Cyclodextrin (β-CD) is an oligosaccharide composed of seven units of D-(+)-glucopyranose joined by α-1,4 bonds, which is obtained from starch. Its singular trunk conical shape organization, with a well-defined cavity, provides an adequate environment for several types of molecules to be included. Complexation changes the properties of the guest molecules and can increase their stability and bioavailability, protecting against degradation, and reducing their volatility. Thanks to its versatility, biocompatibility, and biodegradability, β-CD is widespread in many research and industrial applications. In this review, we summarize the role of β-CD and its derivatives in the textile industry. First, we present some general physicochemical characteristics, followed by its application in the areas of dyeing, finishing, and wastewater treatment. The review covers the role of β-CD as an auxiliary agent in dyeing, and as a matrix for dye adsorption until chemical modifications are applied as a finishing agent. Finally, new perspectives about its use in textiles, such as in smart materials for microbial control, are presented.

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“…So, the association of hydrogels with CDs not only solves the problem that hydrogels hardly accommodate hydrophobic substances but also that they can be used to improve some properties, such as water swelling and mechanical properties. However, most studies have been implemented to permanently immobilize CDs on different natural polymers to form CD‐based hydrogels, such as through chemical crosslinking and radiation‐induced grafting . These methods usually involve high temperatures, and this leads to toxic byproducts and results from undesirable side reactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of an elastic β‐cyclodextrin hydrogel cage by hydroxyethyl cellulose

Chen

Wang

2016

J of Applied Polymer Sci

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Current cyclodextrin (CD) hydrogels have disadvantages, including a limited CD content, long reaction time, and complicated chemical reactions. To overcome these, a one‐pot reaction was adopted, and a concept of a β‐CD hydrogel cage was proposed. Hydroxyethyl cellulose (HEC) was used as the raw material with the adjustment of the stoichiometric relationship among the crosslinking agent of epichlorohydrin, alkali environment, and β‐CD amount, and an elastic β‐CD hydrogel cage system was established. After the β‐CD was caged, the contents of active β‐CD in hydrogel products reached 74.45 and 69.14 wt % by weight measurement and photometric titration, respectively. Furthermore, compared to the pure HEC hydrogel, the hydrogel mechanical strength improved obviously after the β‐CD was caged, and we obtained a faster water swelling rate at the same time. Finally, a hydrophobic molecule of phenolphthalein (PP) was used to evaluated the activity of caged β‐CD in the hydrogel. In addition, the absorption and release of PP by an elastic β‐CD hydrogel cage at certain time intervals were also studied. The results demonstrate that the β‐CD hydrogel cage was used as a functional molecule carrier to quickly absorb and sustain the release of PP. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44388.

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Permanent fixation of β‐cyclodextrin on cotton surface—An assessment between innovative and established approaches

Cited by 13 publications

References 20 publications

Cyclodextrins in Textile Finishing

Cyclodextrins in Textile Finishing

The Role of β-Cyclodextrin in the Textile Industry—Review

Synthesis of an elastic β‐cyclodextrin hydrogel cage by hydroxyethyl cellulose

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