Proton conduction in new polymer hydrogel films consisting of crosslinking partially phosphorylated poly(vinyl alcohol)s

1999 ◽  
Vol 1 (11) ◽  
pp. 2749-2753 ◽  
Author(s):  
Masahiro Suzuki ◽  
Takahide Yoshida ◽  
Satoshi Kobayashi ◽  
Toshiki Koyama ◽  
Mutsumi Kimura ◽  
...  
2019 ◽  
Vol 27 (6) ◽  
pp. 523-525
Author(s):  
Vu Khac Hoang Bui ◽  
Duckshin Park ◽  
Minh Kim Nguyen ◽  
Ju-Young Moon ◽  
Young-Chul Lee

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Xiaojuan Zhang ◽  
Wenbin Cai ◽  
Lingyun Hao ◽  
Wei Zhang

This study synthesized poly(vinyl alcohol)/carboxymethyl chitosan/cyanidin (PVA/CMCS/CY) hydrogel films. First, PVA and CMCS were used to synthesize hydrogel films by ultraviolet irradiation. Meanwhile, CY was in situ combined into the hydrogel films through the electrostatic attraction between CMCS and CY. Next, the products were analyzed using Fourier-transform infrared spectroscopy, scanning electron microscopy, contact angle test, swelling analysis, and mechanical property test. The results revealed that compared with PVA/CMCS hydrogel films, the PVA/CMCS/CY hydrogel films had an interporous structure and good swelling and mechanical properties. Moreover, the drug release experiments demonstrated that the PVA/CMCS/CY hydrogel films had a CY encapsulation efficiency of 33.5% with a sustained CY release of up to 60 h. Furthermore, the examined antibacterial activities against Staphylococcus aureus and Escherichia coli showed that the porous PVA/CMCS/CY hydrogel films exhibited a certain inhibition. Cell viability experiments demonstrated that the PVA/CMCS/CY films displayed no obvious cytotoxicity to human umbilical vein endothelial cells.


2020 ◽  
Vol 3 (3) ◽  
pp. 1681-1689 ◽  
Author(s):  
John H. Thurston ◽  
Andrew J. Clifford ◽  
Bradley S. Henderson ◽  
Tyler R. Smith ◽  
Dylan Quintana ◽  
...  

2015 ◽  
Vol 125 ◽  
pp. 189-199 ◽  
Author(s):  
Di Zhang ◽  
Wei Zhou ◽  
Bing Wei ◽  
Xin Wang ◽  
Rupei Tang ◽  
...  

Author(s):  
Noriko Ishizuka ◽  
Yuichi Hashimoto ◽  
Yasutaka Matsuo ◽  
Kuniharu Ijiro

2004 ◽  
Vol 19 (6) ◽  
pp. 531-536 ◽  
Author(s):  
Seon Jeong Kim ◽  
Seoung Gil Yoon ◽  
Young Moo Lee ◽  
Hee Chan Kim ◽  
Sun I. Kim

2021 ◽  
pp. 088532822199226
Author(s):  
Patricia Hubner ◽  
Nilson Romeu Marcilio ◽  
Isabel Cristina Tessaro

The development of hydrogel films for biomedical applications is interesting due to their characteristics. Hydrogel films based on gelatin and poly(vinyl alcohol) (PVA) are developed and characterized using a rotatable central composite design. The optimized hydrogel film is obtained by the function desirability of the Statistica® software and is also characterized by swelling kinetics, oxygen permeability, adhesiveness, TGA, DSC, and XRD. The results of the experimental design show that gelatin and PVA concentrations have a significant influence on the response variables, and the exposure doses to UV light show no significant effect. The optimized hydrogel film is elastic, presents good mechanical resistance and swelling capacity in water and exudate solution, is permeable to oxygen, and is capable of adjusting itself and maintains contact close to the skin. In this way, considering all the properties evaluated, the optimized film has characteristics suitable for biomedical applications as wound dressings.


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