Chitosan/poly(vinyl alcohol) blending hydrogel coating improves the surface characteristics of segmented polyurethane urethral catheters

2007 ◽  
Vol 83B (2) ◽  
pp. 304-313 ◽  
Author(s):  
Shu-Hua Yang ◽  
Yu-Sheng J. Lee ◽  
Feng-Huei Lin ◽  
Jen-Ming Yang ◽  
Ko-shau Chen
Keyword(s):  
Vinyl Alcohol ◽  
Surface Characteristics ◽  
Poly Vinyl Alcohol ◽  
Segmented Polyurethane ◽  
Hydrogel Coating

scholarly journals Modification of Surface Properties of Colloidal Suspensions of NixOy-SiO2 Mixed Oxides with Different Ni Contents by the Adsorption Layers of Poly(Vinyl Alcohol)

2020 ◽  
Author(s):  
M. Wiśniewska ◽  
S. Chibowski ◽  
T. Urban ◽  
G. Fijałkowska ◽  
M. Medykowska ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Mixed Oxide ◽  
Vinyl Alcohol ◽  
Mixed Oxides ◽  
Colloidal Suspensions ◽  
Surface Characteristics ◽  
Limited Range ◽  
Poly Vinyl Alcohol ◽  
Solution Interface ◽  
Adsorption Affinity

Abstract The adsorption and electrokinetic properties of hybrid silica materials composed of nickel and silicon oxides (NixOy-SiO2), characterized by different contents of nickel oxide (from 0.5 to 3 mmol/g SiO2), were examined. These solids were also modified by poly(vinyl alcohol) to change their surface characteristics. The polymer is non-toxic and very well soluble in water. Due to incomplete hydrolysis of the polymer acetate groups, its macromolecules become negatively charged. The limited range of studied pH (6–10) resulted from high solubility of nickel oxide at more acidic pH values. The spectrophotometric, surface charge and electrophoretic measurements indicated that PVA exhibits higher adsorption affinity for the surfaces of mixed oxide with a larger content of nickel in its structure. Moreover, the presence of polymeric layers on the solid surface influences considerably the structure of electrical double layer formed at the mixed oxide-aqueous solution interface.

Hydrophilic comonomer impact on poly(vinyl alcohol-co-methyl methacrylate) based hydrogel coating

2020 ◽  
Vol 31 ◽  
pp. 54-59
Author(s):  
Siti Musliha Mat Ghani ◽  
Nurul Ekmi Rabat ◽  
Ros Azlinawati Ramli ◽  
Mohd Faridzuan Majid ◽  
Wan Zaireen N. Yahya
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hydrogel Coating

scholarly journals Impact of poly(vinyl alcohol) adsorption on the surface characteristics of mixed oxide Mn x O y –SiO2

Adsorption ◽  
2015 ◽  
Vol 22 (4-6) ◽  
pp. 417-423 ◽  
Author(s):  
M. Wiśniewska ◽  
V. Bogatyrov ◽  
I. Ostolska ◽  
K. Szewczuk-Karpisz ◽  
K. Terpiłowski ◽  
...  
Keyword(s):  
Mixed Oxide ◽  
Vinyl Alcohol ◽  
Surface Characteristics ◽  
Poly Vinyl Alcohol ◽  
Alcohol Adsorption

Strong adhesion of poly(vinyl alcohol)–glycerol hydrogels onto metal substrates for marine antifouling applications

Soft Matter ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 709-717 ◽  
Author(s):  
Heng-Wei Zhu ◽  
Jia-Nan Zhang ◽  
Pei Su ◽  
Tianqi Liu ◽  
Changcheng He ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Coating Materials ◽  
Metal Substrates ◽  
Antifouling Coating ◽  
Strong Adhesion ◽  
Adhesion Stability ◽  
Hydrogel Coating ◽  
Marine Antifouling

PVA–glycerol gels, which were adhered onto metal substrates by using adhesives, were employed as robust antifouling coating materials. The adhesion stability and antifouling performances of the hydrogel coating against barnacles were investigated.

scholarly journals Preparation and characterization of new hydrogels based on poly(vinyl alcohol)/phosphoester — chondroitin sulphate

2013 ◽  
Vol 11 (3) ◽  
pp. 446-456
Author(s):  
Tachita Vlad-Bubulac ◽  
Diana Serbezeanu ◽  
Ana-Maria Oprea ◽  
Ionela-Daniela Carja ◽  
Corneliu Hamciuc ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Chondroitin Sulphate ◽  
Moisture Sorption ◽  
Kinetic Studies ◽  
Surface Characteristics ◽  
Poly Vinyl Alcohol ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Ft Ir

AbstractAbstract New polymer hydrogels based on partially phosphorylated poly(vinyl alcohol) (PVA/Phosphoester) have been prepared. Fourier transform infrared spectroscopy (FT-IR) was employed to confirm PVA/Phosphoester formation. Contact angle measurements were performed to evaluate the surface characteristics of the hydrogels. The PVA/Phosphoester hydrogels were co-networked with Chondroitin sulfate (CS) in various ratios by chemical crosslinking. The synthetic-natural mixed resulted semi-IPN hydrogels were structurally and morphologically investigated by ATR — FT-IR spectroscopy and scanning electron microscopy, respectively. The swelling behavior and dynamic moisture sorption capacity of the PVA/Phosphoester (p-methyl-phenyl phosphonic dichloride) (P3)-CS semi-IPN hydrogels were followed. It was found that the performance of the semi-IPN hydrogels was influenced by the CS. By kinetic studies, it has been shown that the swelling processes occurred by an anomalous transport mechanism. Graphical abstract

Properties of a heparin-poly(vinyl alcohol) hydrogel coating

1983 ◽  
Vol 17 (2) ◽  
pp. 359-373 ◽  
Author(s):  
Mattheus F. A. Goosen ◽  
Michael V. Sefton
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hydrogel Coating

scholarly journals Polyurethane/poly(vinyl alcohol) hydrogel coating improves the cytocompatibility of neural electrodes

2015 ◽  
Vol 10 (12) ◽  
pp. 2048 ◽  
Author(s):  
YanwenY Duan ◽  
Mei Li ◽  
Hai-han Zhou ◽  
Tao Li ◽  
Cheng-yan Li ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Neural Electrodes ◽  
Hydrogel Coating

Atomic Force Microscopy Studies of the Film Surface Characteristics of Poly(vinyl acetate) Latexes Prepared with Poly(vinyl alcohol)

Langmuir ◽  
2003 ◽  
Vol 19 (23) ◽  
pp. 9968-9972 ◽  
Author(s):  
B. M. Budhlall ◽  
O. L. Shaffer ◽  
E. D. Sudol ◽  
V. L. Dimonie ◽  
M. S. El-Aasser
Keyword(s):  
Atomic Force Microscopy ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Film Surface ◽  
Surface Characteristics ◽  
Poly Vinyl Alcohol ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals THERMAL, MECHANICAL AND WATER SORPTION PROPERTIES OF XANTHAN-BASED COMPOSITE CRYOGELS

2020 ◽  
Vol 54 (9-10) ◽  
pp. 915-924
Author(s):  
IRINA ELENA RASCHIP ◽  
MARIA VALENTINA DINU ◽  
NICUSOR FIFERE ◽  
RALUCA DARIE-NITA ◽  
DANIELA PAMFIL ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Water Sorption ◽  
Surface Characteristics ◽  
Grape Pomace ◽  
Poly Vinyl Alcohol ◽  
Polyphenol Content ◽  
Natural Polyphenol ◽  
Red Grape ◽  
Water Sorption Capacity ◽  
Thermal Stability Of

The thermal, mechanical, rheological, and surface characteristics of some xanthan/poly(vinyl alcohol)/red grape pomace composite cryogels prepared by the freeze/thawing approach were investigated. The results were discussed in comparison with those obtained for individual xanthan or poly(vinyl alcohol) cryogel networks synthesized under the same conditions. The mechanical strength of the cryogels was enhanced by increasing the number of freeze/thawing cycles, and by the addition of a natural polyphenol (i.e. red grape pomace). The thermal stability of the poly(vinyl alcohol) in the blend significantly decreased upon the addition of 50% xanthan, while the presence of a single neat melting profile indicated good component miscibility for the chosen ratios. The water sorption capacity depended on the amount of polyphenol incorporated, thus the hydrophilicity of the cryogel films decreased with the increase of polyphenol content.

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