Molecular entrapment of volatile organic compounds (VOCs) by electrospun cyclodextrin nanofibers

Abstract

In this paper, we reported the molecular entrapment performance of hydroxypropyl-beta-cyclodextrin (HPβCD) and hydroxypropyl-gamma-cyclodextrin (HPγCD) electrospun nanofibers (NF) for two common volatile organic compounds (VOCs); aniline and benzene. The encapsulation efficiency of CD samples were investigated depending on the various factors such as; CD form (NF and powder), electrospinning solvent (DMF and water), CD (HPβCD and HPγCD) and VOCs (aniline and benzene) types. BET analysis indicated that, electrospun CD NF have higher surface area compared to their powder form. In addition DMA measurement provided information about the mechanical properties of CD NF. The encapsulation capability of CD NF and CD powder was investigated by 1H-NMR and HPLC techniques. The observed results suggested that, CD NF can entrap higher amount of VOCs from surroundings compared to their powder forms. Besides, molecular entrapment efficiency of CD NF also depends on CD, solvent and VOCs types. The inclusion complexation between CD and VOCs was determined by using TGA technique, from the higher decomposition temperature of VOCs. Finally, our results were fortified by the modeling studies which indicated the complexation efficiency variations between CD and VOC types. Here, the inclusion complexation ability of CD molecules was combined with very high surface area and versatile features of CD NF. So these findings revealed that, electrospun CD NF can serve as useful filtering material for air filtration purposes due to their molecular entrapment capability of VOCs. © 2015 Elsevier Ltd

Electrospun Nanofibers Membranes for Effective Air Filtration

“…c) The schematic of HPβCD molecule and chemical structure, and the schematic representation of the electrospinning of HPβCD nanofibers. The optical photograph of HPβCD nanowebs and the schematic view of the molecular entrapment test also was shown . Reproduced with permission .…”

“…The optical photograph of HPβCD nanowebs and the schematic view of the molecular entrapment test also was shown . Reproduced with permission . Copyright 2015, Elsevier.…”

“…Other functional electrospun high filtration efficiency media have also been developed. Celebioglu et al electrospun cyclodextrin nanofibers to molecularly entrap the volatile organic compounds (VOCs; aniline and benzene vapor). As the Figure c shows, the hydroxypropyl‐beta‐cyclodextrin (HP β CD) electrospun nanofibers process higher surface area than their powder form as well as highly porous structures, and thus, CD nanofibers can entrap more VOCs from the surroundings than their powder forms.…”

One‐step facile process to obtain insoluble polysaccharides fibrous mats from electrospinning of water‐soluble PMDA/cyclodextrin polymer

“…Several articles report the possibility to produce fibers via electrospinning starting from native bCDs, bCD derivatives, and bCDs/polymers mixtures. [13][14][15][16][17][18][19][20][21][22][23][24][25] These innovative systems have gained increasing interest in a wide area of applications such as filters, 26,27 gas trap, 28 pharmaceutical, 29 and medical devices. 30,31 Among the literature dealing with bCD systems there is no evidence of studies conducted on the electrospinning of water-soluble bCD-based polymer and using water as unique solvent.…”

Detection of Odorant Molecules in the Gaseous Phase Using α-, β-, and γ-Cyclodextrin Films on a Quartz Crystal Microbalance

“…CDs have a cavity, similar to enzymes and olfactory receptors, that can capture small molecules, making them potential candidates for use as stable receptors. CDs are mainly applied to the detection of VOCs, such as benzene, toluene, and xylene [22][23][24][25]. CDs were also applied to the detection of fruit flavors, but this method used a UV-Vis spectrophotometric technique in aqueous solution, not in air [26].…”