In situ fibrillation of poly(vinyl alcohol) during saponification of poly(vinyl ester) (1). Chemorheological and morphological investigations of in situ fibrillation

Polymer ◽  
1999 ◽  
Vol 40 (2) ◽  
pp. 497-505 ◽  
Author(s):  
Won Seok Lyoo ◽  
Wan Shik Ha
Keyword(s):  
Vinyl Alcohol ◽  
Vinyl Ester ◽  
Poly Vinyl Alcohol ◽  
In Situ Fibrillation ◽  
Morphological Investigations

Critical Molecular Weight Required for in Situ Fibrillation of Syndiotactic Poly(vinyl alcohol) during Saponification

2003 ◽  
Vol 36 (14) ◽  
pp. 5428-5431 ◽  
Author(s):  
Won Seok Lyoo ◽  
Han Do Ghim ◽  
Joon Ho Kim ◽  
Seok Kyun Noh ◽  
Jeong Hyun Yeum ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Critical Molecular Weight ◽  
In Situ Fibrillation

scholarly journals In Situ Preparation and Properties of Poly(vinyl alcohol)/Carboxymethyl Chitosan/Cyanidin Hydrogel Films

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Xiaojuan Zhang ◽  
Wenbin Cai ◽  
Lingyun Hao ◽  
Wei Zhang
Keyword(s):  
Vinyl Alcohol ◽  
Encapsulation Efficiency ◽  
Umbilical Vein ◽  
Antibacterial Activities ◽  
Carboxymethyl Chitosan ◽  
Poly Vinyl Alcohol ◽  
In Situ Preparation ◽  
Umbilical Vein Endothelial Cells ◽  
Hydrogel Films

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.

scholarly journals In situ and ex situ synthesis of poly(vinyl alcohol)–Fe3O4 nanocomposite flame retardants

Particuology ◽  
2016 ◽  
Vol 26 ◽  
pp. 87-94 ◽  
Author(s):  
Davood Ghanbari ◽  
Masoud Salavati-Niasari ◽  
Majid Ghasemi-Kooch
Keyword(s):  
Vinyl Alcohol ◽  
Flame Retardants ◽  
Ex Situ ◽  
Poly Vinyl Alcohol
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