High strength and bioactivity polyvinyl alcohol/collagen composite hydrogel with tannic acid as cross‐linker

One of the main challenges in designing a release system is the possibility to control the release rate in order to maintain it at a constant value below a defined limit, to avoid exceeding the toxicity threshold. We propose a method of overcoming this difficulty by introducing the drug into liposomes, prior to its inclusion in the hydrogel. Furthermore, a natural cross linker (as is tannic acid) is used, instead of the toxic cross linkers commonly used, thus reducing the toxicity of the release system as a whole.

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Tannic-Acid-Cross-Linked and TiO2-Nanoparticle-Reinforced Chitosan-Based Nanocomposite Film

Polymers ◽

10.3390/polym13020228 ◽

2021 ◽

Vol 13 (2) ◽

pp. 228

Author(s):

Swarup Roy ◽

Lindong Zhai ◽

Hyun Chan Kim ◽

Duc Hoa Pham ◽

Hussein Alrobei ◽

...

Keyword(s):

Mechanical Properties ◽

Tannic Acid ◽

Nanocomposite Film ◽

Food Packaging ◽

Titanium Dioxide Nanoparticles ◽

Casting Technique ◽

Active Food Packaging ◽

Reinforcing Agent ◽

Solution Casting Technique ◽

Cross Linker

A chitosan-based nanocomposite film with tannic acid (TA) as a cross-linker and titanium dioxide nanoparticles (TiO2) as a reinforcing agent was developed with a solution casting technique. TA and TiO2 are biocompatible with chitosan, and this paper studied the synergistic effect of the cross-linker and the reinforcing agent. The addition of TA enhanced the ultraviolet blocking and mechanical properties of the chitosan-based nanocomposite film. The reinforcement of TiO2 in chitosan/TA further improved the nanocomposite film’s mechanical properties compared to the neat chitosan or chitosan/TA film. The thermal stability of the chitosan-based nanocomposite film was slightly enhanced, whereas the swelling ratio decreased. Interestingly, its water vapor barrier property was also significantly increased. The developed chitosan-based nanocomposite film showed potent antioxidant activity, and it is promising for active food packaging.

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Mechanical and antibacterial properties of tannic acid-encapsulated carboxymethyl chitosan/polyvinyl alcohol hydrogels

Engineered Regeneration ◽

10.1016/j.engreg.2021.05.002 ◽

2021 ◽

Author(s):

Xiaofan Feng ◽

Xiuling Hou ◽

Congjing Cui ◽

Shibin Sun ◽

Sahiya Sadik ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

Tannic Acid ◽

Antibacterial Properties ◽

Carboxymethyl Chitosan

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A high-strength polyvinyl alcohol hydrogel membrane crosslinked by sulfosuccinic acid for strontium removal via filtration

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2018.102824 ◽

2019 ◽

Vol 7 (1) ◽

pp. 102824 ◽

Cited By ~ 9

Author(s):

Ji Young Yoon ◽

Huagui Zhang ◽

Yun Kon Kim ◽

David Harbottle ◽

Jae W. Lee

Keyword(s):

Polyvinyl Alcohol ◽

High Strength ◽

Strontium Removal ◽

Hydrogel Membrane ◽

Sulfosuccinic Acid

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Effect of Heat Setting Methods on Structures and Properties of High Strength Polyvinyl Alcohol Fibre

Materials Science Forum ◽

10.4028/www.scientific.net/msf.815.643 ◽

2015 ◽

Vol 815 ◽

pp. 643-648

Author(s):

Yin Zhu ◽

Jiong Xin Zhao

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Polyvinyl Alcohol ◽

Setting Time ◽

High Strength ◽

Single Fibre ◽

X Ray Diffraction ◽

Heat Setting ◽

Heat Treated ◽

Setting Process

The effect of heat setting methods on the structures and mechanical properties of high strength polyvinyl alcohol (PVA) fibre is studied in this article. The microstructure and mechanical properties of heat treated PVA fibre is investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and single fibre electronic tensile strength tester. Results show that the heat setting method with constant tension is a good heat setting method which can largely enhance the tensile strength of PVA fibre. During the heat setting process, the mechanical properties of PVA fibre are greatly affected by the temperature, tension and setting time. When the temperature is 220°C, tension is 5cN/dtex and setting time is 90sec, the tensile strength of PVA fibre increases from 12.0cN/dtex to 16.4cN/dtex in compare with the PVA fibre without heat setting

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Fast self-healing multifunctional polyvinyl alcohol nano-organic composite hydrogel as building blocks for highly sensitive strain/pressure sensors

Journal of Materials Chemistry A ◽

10.1039/d1ta05586k ◽

2021 ◽

Author(s):

Wenhao Zhao ◽

Dongzhi Zhang ◽

Yan Yang ◽

Chen Du ◽

Bao Zhang

Keyword(s):

Polyvinyl Alcohol ◽

Human Computer Interaction ◽

Pressure Sensors ◽

Building Blocks ◽

Composite Hydrogel ◽

Sensitive Strain ◽

Self Healing ◽

Wearable Sensor ◽

Hybrid Hydrogel ◽

Highly Sensitive

The conductive and biocompatible hybrid hydrogel was successfully assembled into an adhesive, flexible wearable sensor for ultra-sensitive human-computer interaction and smart detection, which holds excellent self-healing capability. This conductive, repairable...

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