Chrome-free tanning agent based on epoxy-modified dialdehyde starch towards sustainable leather making

Hao, Dongyu; Wang, Xuechuan; Liu, Xinhua; Su, Rongrong; Duan, Zhengjun; Dang, Xugang

doi:10.1039/d1gc03472c

Cited by 47 publications

(19 citation statements)

References 39 publications

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“…First, the starch was introduced into the aldehyde group by a reaction with sodium periodate, which oxidized it to form dialdehyde starch (Figure S1). As illustrated in Figure A, a new characteristic peak was observed in the Fourier transform infrared (FTIR) spectrum of DAS located at 1733 cm –1 , corresponding to the characteristic peak of carbonyl groups (CO), which confirmed that some hydroxyl groups in starch had been oxidized by NaIO 4 . This was also evidenced by a new peak at 1721 cm –1 in the CO stretching vibration of DAS in the Raman spectrum (Figure B).…”

Section: Resultsmentioning

confidence: 76%

Strong Biopolymer-Based Nanocomposite Hydrogel Adhesives with Removability and Reusability for Damaged Tissue Closure and Healing

Tian

Guan

Wen

et al. 2022

ACS Appl. Mater. Interfaces

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Bioadhesives are widely used in a variety of medical settings due to their ease of use and efficient wound closure and repair. However, achieving both strong adhesion and removability/reusability is highly needed but challenging. Here, we reported an injectable mesoporous bioactive glass nanoparticle (MBGN)-incorporated biopolymer hydrogel bioadhesive that demonstrates a strong adhesion strength (up to 107.55 kPa) at physiological temperatures that is also removable and reusable. The incorporation of MBGNs in the biopolymer hydrogel significantly enhances the tissue adhesive strength due to an increased cohesive and adhesive property compared to the hydrogel adhesive alone. The detachment of bioadhesive results from temperatureinduced weakening of interfacial adhesive strength. Moreover, the bioadhesive displays injectability, self-healing, and excellent biocompatibility. We demonstrate potential applications of the bioadhesive in vitro, ex vivo, and in vivo for hemostasis and intestinal leakage closure and accelerated skin wound healing compared to surgical wound closures. This work provides a novel design of strong and removable bioadhesives.

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Section: Resultsmentioning

confidence: 76%

Strong Biopolymer-Based Nanocomposite Hydrogel Adhesives with Removability and Reusability for Damaged Tissue Closure and Healing

Tian

Guan

Wen

et al. 2022

ACS Appl. Mater. Interfaces

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“…However, leather production generally necessitates a tanning process . During this process, hazardous heavy metal ions (e.g., Cr 3+ ) are generally involved, − which can cause potential environmental issues and increase cancer risk in humans during long contact with these leather products. Therefore, seeking a porous, permeable, durable, eco-friendly, and biofriendly staring material for constructing functional and smart insoles is of great significance but is still challenging.…”

Section: Introductionmentioning

confidence: 99%

Breathable, Antibacterial, and Biocompatible Collagen Fiber Network Decorated with Zwitterionic Silver Nanoparticles for Plantar Pressure Monitoring

Xiang

Yang

et al. 2022

ACS Appl. Mater. Interfaces

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Foot plantar pressure monitoring and gait analysis are of great significant in footwear design, sport biomechanics, injury prevention, and early warning of disease. Flexible and wearable smart insoles pave a feasible way for these application scenarios. However, the majority of the currently developed smart insoles are composed of synthetic polymers (e.g., plastics, rubbers, etc.), leading to inevitable problems associated with air permeability, hygiene condition, biocompatibility, and wearing comfort. Here, a new paradigm of a natural collagen fiber network (CFN) with soft and breathable features, which can be obtained by facilely treating animal hides via conventional leather pretreatment process, is selected as substrate material for constructing smart insoles due to its high permeability and porosity. Further, biocompatible zwitterionic silver nanoparticles (AgNPs) with both carboxybetaine and catechol groups on the interface were designed for firmly and uniformly immobilization onto the hierarchical micro-/nanoscale fibers of CFN through mussel-inspired catechol/amino chemistry, giving rise to both good antibacterial property and pressure sensing capability of the resultant material. The finally developed smart insole by using the AgNPs decorated CFN exhibits good capability for plantar pressure mapping and gait feature analysis. Especially, the smart insole will be very suitable for pressure monitoring and gait analysis of a diabetic foot with sensitive skin that requires a high biocompatible and antibacterial environment.

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“…Considering the polyhydroxy structures of oligosaccharides, aldehyde group-rich oligosaccharide derivatives can be produced through oxidization. Once these species are synthesized, a robust crosslinking network is weaved via forming multisite Schiff base structures between the aldehyde group in the oligosaccharides and the amino group in the collagen fibers [4,5]. For example, biomass-derived aldehyde (BDA) tanning agents were prepared through periodate oxidation of sodium carboxymethyl cellulose (CMC) and sugarcane bagasse, in which the C2-C3 bond of the glucose unit was selectively cleaved to form 2,3-dialdehyde CMC [6,7].…”

Section: Biomass Derived Oligosaccharides For Potential Leather Tanningmentioning

confidence: 99%

Biomass derived oligosaccharides for potential leather tanning

et al. 2023

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Chrome-free tanning agent based on epoxy-modified dialdehyde starch towards sustainable leather making

Abstract: As a biomass tanning agent, epoxy-modified dialdehyde starch can significantly improve the comprehensive properties of finished leather, and is expected to be a novel sustainable chrome-free tanning agent replace traditional tanning agent.

Cited by 47 publications

References 39 publications

Strong Biopolymer-Based Nanocomposite Hydrogel Adhesives with Removability and Reusability for Damaged Tissue Closure and Healing

Strong Biopolymer-Based Nanocomposite Hydrogel Adhesives with Removability and Reusability for Damaged Tissue Closure and Healing

Breathable, Antibacterial, and Biocompatible Collagen Fiber Network Decorated with Zwitterionic Silver Nanoparticles for Plantar Pressure Monitoring

Biomass derived oligosaccharides for potential leather tanning

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