Facile biomimetic self-coacervation of tannic acid and polycation: Tough and wide pH range of underwater adhesives

Wang, Zhong; Zhang, Shifeng; Zhao, Shujun; Kang, Ho-Min; Xia, Changlei; Yu, Yanglun; Li, Jianzhang

doi:10.1016/j.cej.2020.127069

Cited by 140 publications

(71 citation statements)

References 59 publications

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“…For example, electron transfer in the contact area between bioadhesive substances and mucous glycoproteins is considered as one of the possible mechanisms of mucous membrane adhesion. 3 Inspired by the catecholic and polyelectrolyte features of mussel foot proteins, Wang et al 113 developed a powerful and cost-effective self-agglutinating adhesive based on the agglutination-induced adhesion mechanism. Cationic polyelectrolyte-polyamideamide-epichlorohydrin (PAE) was cross-linked in situ by dendrimers of TA, and after direct mixing of pyrogallol-containing TA and PAE polycation, a complex coacervate gel was formed.…”

Section: Polyelectrolyte Adhesivesmentioning

confidence: 99%

Recent progress in polymer hydrogel bioadhesives

Pei

Wang

Cong

et al. 2021

Journal of Polymer Science

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Adhesive hydrogels have broad applications in tissue adhesives, hemostatic agents, and biomedical sensors. Various bio‐inspired glues and synthetic adhesives are clinically used as conventional hemostatic agents and auxiliary tools for wound closure. Medical adhesives are needed to effectively and quickly control bleeding, thereby reducing the risk of complications caused by severe blood loss. Medical sensors need to have excellent skin compliance, mechanical properties, sensitivity, and biological safety. This review focuses on recent progress in adhesive hydrogel systems, their structures, adhesion mechanisms, construction strategies, and emerging applications in the biomedical field.

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Section: Polyelectrolyte Adhesivesmentioning

confidence: 99%

Recent progress in polymer hydrogel bioadhesives

Pei

Wang

Cong

et al. 2021

Journal of Polymer Science

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“…[44,45] During the underwater adhesion of ionogels, the hydration layer on the substrate surface can be destroyed due to the hydrophobicity of the ionogels. Then, various interactions, such as ion-dipolar, [31,46,47] dipolar-dipolar, [48][49][50] metal complexation, [51] electrostatic, [44,52] cation-π interactions, [44] and van der Waals interactions, [53] can be formed between the ionogels and different substrates (Figure S8, Supporting Information). Therefore, underwater strong adhesion can be formed.…”

Section: Resultsmentioning

confidence: 99%

Water‐Resistant Ionogel Electrode with Tailorable Mechanical Properties for Aquatic Ambulatory Physiological Signal Monitoring

2021

Adv Funct Materials

107

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Underwater electrocardiography (ECG) monitoring, which can monitor cardiac autonomic changes and arrhythmias during diving, is essential for sports management and healthcare. However, it is crucial yet rather challenging to achieve ECG monitoring in an aquatic environment because the interface electrodes may lose their functionality underwater. Here, an ionogel with tailorable mechanical properties is prepared by a facile one-step polymerization and used as water-resistant electrode. The Young's modulus and strain at break of the ionogel can be modulated in the range of 0.22-337 MPa and 349 to >10 000%, respectively. The hydrophobic polymer networks inside the ionogel endow this ionogel with excellent stability, adhesion, and selfhealing ability underwater. The ionic conductivity imparted by the free ionic groups inside the ionogel allows the ionogel to detect and transmit physiological electrical signals. Compared with commercial gel electrodes, this ionogel electrode demonstrates better adhesion ability, conductivity, and stability underwater. The ionogel electrode can collect real-time ECG signals effectively both in the air and underwater, and the data can be used to warn users of the potential risk of a heart attack.

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“…In the SMT and SMPT adhesive sample, the vibration peak became considerably weaker around 1391 cm −1 (COO-bending) which revealed that weakened vibrational energy of the COO-bending was might be due to interactions with the catechol/pyrogallol and -OH. [35] A new absorption peak was observed at 1731 cm −1 , which belonged to the carbonyl absorption peak, which may be the result of the esterification reaction between PAE and carboxyl groups on the soybean protein molecule. [36] When PAE and TA was complexed, the peak at 1232 cm −1 shifted to an elevated wavenumber (1184 cm −1 ) due to electrostatic interactions between the azetidinium structures of PAE and the -OH groups of TA in the SMPT adhesive.…”

Section: Design and Characterization Of The Smpt Adhesivementioning

confidence: 99%

“…In summary, the addition both of PAE and TA greatly helped to extend the shelf life of soy protein adhesives and the resulting plywood longevity, as they are associated with excellent mildew-resistant potency. [35]…”

Section: Mildew Resistance Of the Smpt Adhesivesmentioning

confidence: 99%

Plant Polyphenol‐Inspired Crosslinking Strategy toward High Bonding Strength and Mildew Resistance for Soy Protein Adhesives

Pang

Shen

et al. 2021

Macro Materials & Eng

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Soybean protein adhesives are environmentally friendly biomass-based aldehyde-free adhesives that have good economic value for the wood industry; however, it remains challenging to produce soybean protein adhesives with excellent water resistance, toughness, and mildew resistance through a simple modification method. In this work, inspired by plant polyphenols, a novel crosslinked soybean meal adhesive (SMPT) is obtained using a facile economic method. Polyamidoamine-epichlorohydrin (PAE) and tannic acid (TA) are combined with a soybean meal matrix to form a tough co-crosslinked network through strong intermolecular forces (covalent bonds, ionic bonds, and hydrogen bonds) in adhesive system. The results show that the wet bonding strength of SMPT adhesives for plywood is 134.1% higher than the unmodified soybean meal adhesive. The adhesion properties met the standard requirements for interior-use plywood. And the compact cross-linking network structure is accelerated the greater energy dissipation, which improves the toughness of adhesive. Moreover, cationic azetidinium groups in PAE and phenol hydroxyl groups in TA synergistically not only exhibit the good antibacterial activities but also improve mildew resistance for SMPT adhesives. This facile strategy provides an economic sustainable method to prepare high-performance environmentally friendly wood adhesives.

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Facile biomimetic self-coacervation of tannic acid and polycation: Tough and wide pH range of underwater adhesives

Cited by 140 publications

References 59 publications

Recent progress in polymer hydrogel bioadhesives

Recent progress in polymer hydrogel bioadhesives

Water‐Resistant Ionogel Electrode with Tailorable Mechanical Properties for Aquatic Ambulatory Physiological Signal Monitoring

Plant Polyphenol‐Inspired Crosslinking Strategy toward High Bonding Strength and Mildew Resistance for Soy Protein Adhesives

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