Individual Electrospun Poly(Vinyl Alcohol) Nanofiber Wetting using AFM

2012 ◽  
Vol 1424 ◽  
Author(s):  
Shuangwu Li ◽  
Asa H. Barber
Keyword(s):  
Contact Angle ◽  
Surface Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Polymer Nanofibers ◽  
Bulk Polymer ◽  
Polar Components ◽  
Polymer Nanofiber ◽  
Dispersive Surface Free Energy ◽  
Energy Components

ABSTRACTThe surface of polymer nanofibers plays a significant role in many applications thus measurement of their surface properties is essential but challenging due to their relatively small size. This study details AFM wetting tests for individual electrospun Poly (Vinyl Alcohol) nanofibers in order to measure their polar and dispersive surface free energy components. Individual electrospun PVA nanofibers have been immersed and removed from three different low vapor pressure liquids using AFM. The polymer nanofiber-liquid interactions can be monitored by AFM and accurate measurements of contact angle between liquids and the nanofiber surface can be made. These wetting data were used to produce Owens-Wendt plot giving the dispersive and polar components of the nanofiber surface. Results are compared with bulk polymer films to conclude how the surface properties of electrospun polymer nanofibers are different from bulk polymer material.

scholarly journals Effect of ethanol post-treatment on the bubble-electrospun poly(vinyl alcohol) nanofiber

2015 ◽  
Vol 19 (4) ◽  
pp. 1353-1356 ◽  
Author(s):  
Jiang-Hui Zhao ◽  
Lan Xu ◽  
Qixia Liu
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Water Contact Angle ◽  
Vinyl Alcohol ◽  
Post Treatment ◽  
Poly Vinyl Alcohol ◽  
Water Contact ◽  
Angle Change ◽  
Potential Benefits

Poly(vinyl alcohol) nanofibers were prepared by bubble electrospinning. After the ethanol post-treatment, poly(vinyl alcohol) nanofibers showed enhanced hydrophobicity with water contact angle change from 0 to 78.9?, and the break strength of poly(vinyl alcohol) nanofibers was dramatically improved from 8.23 MPa to 17.36 MPa. The facile strategy with improved hydrophobicity and mechanical properties of poly(vinyl alcohol) nanofibers will provide potential benefits for applications of this material, especially in filtration field.

Surface properties of the composite films based on poly(vinyl alcohol) and nanodiamonds as studied by wetting techniques and autoradiography

2019 ◽  
Vol 297 (3) ◽  
pp. 445-452
Author(s):  
Oxana A. Soboleva ◽  
Maria G. Chernysheva ◽  
Ivan Yu Myasnikov ◽  
Elena V. Porodenko ◽  
Gennadii A. Badun
Keyword(s):  
Surface Properties ◽  
Vinyl Alcohol ◽  
Composite Films ◽  
Poly Vinyl Alcohol

Preparation and Surface Properties of Poly(vinyl alcohol) Brush

2007 ◽  
Vol 36 (10) ◽  
pp. 1280-1281 ◽  
Author(s):  
Yuki Terayama ◽  
Motoyasu Kobayashi ◽  
Atsushi Takahara
Keyword(s):  
Surface Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Dehydro-thermally cross-linked collagen-poly(vinyl alcohol) blends: mechanical, biological and surface properties

1996 ◽  
Vol 7 (5) ◽  
pp. 297-300 ◽  
Author(s):  
M. G. Cascone ◽  
L. Lazzeri ◽  
N. Barbani ◽  
G. Polacco ◽  
A. Pollicino ◽  
...  
Keyword(s):  
Surface Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

scholarly journals Characterisation of poly(vinyl alcohol)- polycaprolactone hybridized scaffold for potential skin tissue regeneration

2020 ◽  
Vol 16 (1) ◽  
pp. 6-9
Author(s):  
Tan Yong Chee ◽  
Abdull Rahim Mohd Yusoff ◽  
Nik Ahmad Nizam Nik Malek
Keyword(s):  
Molecular Weight ◽  
Contact Angle ◽  
Tensile Strength ◽  
Tissue Regeneration ◽  
Vinyl Alcohol ◽  
Skin Tissue ◽  
Poly Vinyl Alcohol ◽  
Strength Analysis ◽  
Hydrophilic Polymer ◽  
Hydrophobic Polymer

The fabrication of a hybridized scaffold constituting hydrophobic and hydrophilic polymers for tissue engineering has received an increasing attention recently. Due to the high compatibility with water, a hydrophilic polymer, though is able to enhance cell affinity and proliferation, has a very high biodegradable rate and low stability in aqueous medium that eventually puncture its biomedical applications. Thereby, the addition of a hydrophobic polymer in the hydrophilic polymer scaffold is recommended to increase the hydrophobic property of the scaffold in order to reduce the limitation. Nonetheless, the fabrication of the hybridized scaffold is extremely challenging because the hydrophilic and the hydrophobic polymer tends to dissolve in different types of solvents, i.e. water and organic solvent, respectively, that subsequently restricts their blending process. In this work, a poly(vinyl alcohol) (PVA) scaffold, a polycaprolactone (PCL) scaffold, and their hybridized scaffold were produced through casting method for potential skin tissue regeneration. We found that the glacial acetic acid was an appropriate solvent used to prepare hydrophobic PCL solution with low molecular weight (16 kDa) for PCL-PVA blend, with mass ratio 1:1, without using any surfactant. The solvent was also used for the preparation of PCL scaffold with high molecular weight (80 kDa). The fabricated polymer scaffolds were then evaluated using FTIR-ATR, contact angle measurement, and tensile strength analysis. FESEM images of the PVA-PCL hybridized scaffold showed that the PCL was well dispersed in the PVA scaffold. FTIR-ATR spectra showed that the hybridized scaffold exhibited the crucial functional group of PVA and PCL at 3310.97, 1720.10, 1557.80, 1241.69, 1172.90, 1044.95, and 719.44 cm-1. The contact angle of the PVA, PCL, and PVA-PCL hybridized scaffold were 61.3o, 82.7o, and 75.9o, respectively, with tensile strength 16.5747, 2.4038, and 7.417 MPa, respectively.

Tuning of surface properties of poly(vinyl alcohol)/graphene oxide nanocomposites

2017 ◽  
Vol 40 (S1) ◽  
pp. E312-E320 ◽  
Author(s):  
Camila F. P. de Oliveira ◽  
Pablo A.R. Muñoz ◽  
Michelle C.C. dos Santos ◽  
Gabriela S. Medeiros ◽  
Amanda Simionato ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Surface properties of poly(vinyl alcohol) films with a fluoroalkyl group at one end

Polymer ◽  
1992 ◽  
Vol 33 (23) ◽  
pp. 5066-5072 ◽  
Author(s):  
Toshiaki Sato ◽  
Toshinori Tsugaru ◽  
Junnosuke Yamauchi ◽  
Takuji Okaya
Keyword(s):  
Surface Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Fluoroalkyl Group
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