Enhancement of the retention performance of the poly(ethylene oxide) — tannic acid system by poly (diallyldimethyl ammonium chloride)

Khoultchaev, Kh. Kh.; Pang, Peter K.T.; Kerekes, R. J.; Englezos, Peter

doi:10.1002/cjce.5450760214

Cited by 14 publications

(8 citation statements)

References 12 publications

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“…In addition, there was an increment in the C=O vibration in TA, which was changed from 1713 cm −1 (free TA) to 1739 cm −1 (TA in complex) [27], which indicates an interaction between the C=O of the Cu (CH 3 COO) 2 and the O-H groups of TA, as a hydrogen donors. These two types of chemical energy shifts shown in FT-IR were similar to previous reported studies [23,28], which confirms that both the C=O and -OH found in TA are key elements for the complex formation.…”

Section: Surface Composition Analysissupporting

confidence: 90%

Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes

Chakrabarty

Pérez-Manríquez

Neelakanda

et al. 2017

Separation and Purification Technology

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Bio-polyphenols that are present in tea, date fruits, chockolate and many other plants have been recognized as scaffold material for the manufacture of composite filtration membranes. These phenolic biomolecules possess abundant gallol (1,2,3-trihydroxyphenyl) and catechol (1,2dihydroxyphenyl) functional groups, which allow the spontaneous formation of a thin polymerized layer at the right pH conditions. Here, we report a facile and cost-effective method to coat porous membranes via the complexation of tannic acid (TA) and cupric acetate (mono hydrate) through co-deposition. The modified membranes were investigated by XPS, ATR/FTIR, water contact angle, SEM and water permeance for a structural and morphological analysis. The obtained results reveal that the modified membranes with TA and cupric acetate (CuII) developed a thin skin layer, which showed excellent hydrophilicity with good water permeance. These membranes were tested with different molecular weight polyethylene glycols (PEG) in aqueous solution; the MWCO was around 600 Daltons.

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Section: Surface Composition Analysissupporting

confidence: 90%

Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes

Chakrabarty

Pérez-Manríquez

Neelakanda

et al. 2017

Separation and Purification Technology

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“…However, these shifts turned into one peak at 3430 cm −1 for the adhesive, revealing transformation of the free hydroxyls into associated H-bonds. 64 For the physical mixture of PEG and TA powders, there existed unbound hydroxyl groups and weak H-bonds by appearance of the shifts at 3518, 3580, and 3430 cm −1 . After forming the PEG/TA adhesive, the strong stretching vibration of −CH 2 at 2872 cm −1 and CO at 1740 cm −1 shifted to peaks of 2903 and 1724 cm −1 , respectively, which ascribed to the steric effect caused by the formed H-bonds.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

“…At the well-defined region of −OH attributed to 3300–3600 cm –1 , the shifts of 3518 and 3580 cm –1 in PEG-SG and 3622 cm –1 in TA were assigned to free or unbound −OH. However, these shifts turned into one peak at 3430 cm –1 for the adhesive, revealing transformation of the free hydroxyls into associated H-bonds . For the physical mixture of PEG and TA powders, there existed unbound hydroxyl groups and weak H-bonds by appearance of the shifts at 3518, 3580, and 3430 cm –1 .…”

Section: Results and Discussionmentioning

confidence: 99%

An Injectable and Instant Self-Healing Medical Adhesive for Wound Sealing

Sun

Chen

et al. 2020

ACS Appl. Mater. Interfaces

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Designing versatile functional medical adhesives with injectability, selfhealing, and strong adhesion is of great significance to achieve desirable therapeutic effects for promoting wound sealing in healthcare. Herein, a self-healing injectable adhesive is fabricated by physical interaction of polyphenol compound tannic acid (TA) and eight-arm poly(ethylene glycol) end-capped with succinimide glutarate active ester (PEG-SG). The hydrogen bonding induced from the structural unit (−CH 2 −CH 2 −O−) of PEG and catechol hydroxyl (−OH) of TA, accompanied by ester exchange between Nhydroxysuccinimide (−NHS) and amino (−NH 2 ) of proteins, contributes to self-healing ability and rapid strong adhesion. Notably, the PEG/TA adhesive can repeatedly adhere to rigid porcine tissues, close the coronary artery under a large incision tension, and bear a heavy load of 2 kg. By exhibiting shear-thinning and anti-swelling properties, the PEG/TA adhesive can be easily applied through single-syringe extrusion onto various wounds. The single-channel toothpaste-like feature of the adhesive ensures its storage hermetically for portable usage. Moreover, in vivo operation and histological H&E staining results indicate that the PEG/TA adhesive greatly accelerates wound healing and tissue regeneration in a rat model. With the specialty of injectability, instant self-healing, and long-lasting strong adhesion to facilitate excellent therapeutic effects, the multifunctional PEG/ TA adhesive may provide a new alternative for self-rescue and surgical situations.

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“…All these changes show the intermolecular interaction between TA and PEG via hydrogen bonds. 16,22 Meanwhile, the adhesive force of TAPE was dependent on the molar ratio of pyrogallol in TA and the terminal −OH of PEGs in TAPE (Figure 1d). As the pyrogallol ratio to the hydroxyl group of PEG increased, enhancement of adhesive force was observed.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

Tannic Acid as a Degradable Mucoadhesive Compound

Shin¹,

Kim²,

Shim³

et al. 2016

ACS Biomater. Sci. Eng.

127

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To achieve site-specific delivery of pharmaceuticals, the development of effective mucoadhesive polymers is essential. Thus far, only a few polymers, such as thiolated ones and related variants, have been studied. However, their mucoadhesiveness varies depending on the type of polymer and the degree of chemical functionalization. Furthermore, the chemistry of tethering often requires harsh reaction conditions. Recently, pyrogallolcontaining molecules have emerged as good tissue and hemostatic adhesives, but their in vivo mucoadhesive properties have not been demonstrated. Herein, we found that pyrogallol-rich tannic acid (TA) formulated with poly(ethylene glycol) (PEG), named TAPE, exhibits superior mucoadhesive properties. TAPE is prepared by a simple physical mixture of TA and PEG. It remained on esophageal mucus layers for at least several hours (<8 h) after oral feeding. The mucoadhesion originated from intermolecular interaction between the polyphenols of TA and mucin, exhibiting pH dependency. TAPE adhered strongly to mucin in neutral conditions but bound weakly in acidic conditions due to different hydrolysis rates of the ester linkages in TA. Thus, TAPE might be useful as a long-lasting esophageal mucoadhesive composite.

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Enhancement of the retention performance of the poly(ethylene oxide) — tannic acid system by poly (diallyldimethyl ammonium chloride)

Cited by 14 publications

References 12 publications

Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes

Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes

An Injectable and Instant Self-Healing Medical Adhesive for Wound Sealing

Tannic Acid as a Degradable Mucoadhesive Compound

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