Novel Ways of Covalent Attachment of Poly(ethylene oxide) onto Polyethylene:  Surface Modification and Characterization by XPS and Contact Angle Measurements

Langmuir ◽  
1996 ◽  
Vol 12 (6) ◽  
pp. 1651-1657 ◽  
Author(s):  
É. Kiss ◽  
J. Samu ◽  
A. Tóth ◽  
I. Bertóti
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Ethylene Oxide ◽  
Covalent Attachment ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Polyethylene Surface

Surface Modification of Copolyether-Urethane Catheters with Poly(Ethylene Oxide)

1989 ◽  
Vol 12 (6) ◽  
pp. 390-394 ◽  
Author(s):  
E. Brinkman ◽  
A. Poot ◽  
T. Beugeling ◽  
L. Van Der Does ◽  
A. Bantjes
Keyword(s):  
Surface Modification ◽  
Ethylene Oxide ◽  
Blood Compatibility ◽  
Angle Measurements ◽  
Fold Reduction ◽  
Contact Angle Measurements ◽  
Platelet Deposition ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Pellethane 2363 80A catheters were modified with poly(ethylene oxide) in order to improve their blood compatibility. Contact angle measurements showed that Pellethane 2363 80A surfaces had increased wettability after this modification. The results of in vitro blood compatibility tests showed that surface modification with poly(ethylene oxide) resulted in a five-fold reduction of platelet deposition. Activation of coagulation was not affected.

scholarly journals Surface modification of polyaniline nanorods with thiol-terminated poly(ethylene oxide)

2018 ◽  
Vol 296 (4) ◽  
pp. 637-645 ◽  
Author(s):  
Brandon T. DiTullio ◽  
Cassandra J. Wright ◽  
Patricia Hayes ◽  
Paul J. Molino ◽  
Timothy W. Hanks
Keyword(s):  
Surface Modification ◽  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Polyaniline Nanorods

Formation and blood compatibility of thin layers of hyperbranched polymers on polyurethane films

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Yong Soon Park ◽  
Yong Soo Kang ◽  
Dong June Chung
Keyword(s):  
Blood Compatibility ◽  
Film Surface ◽  
Hyperbranched Polymers ◽  
Thin Layers ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Unique Method ◽  
Poly Ethylene Oxide ◽  
Ft Ir ◽  
Poly Ethylene

AbstractTwo kinds of hyperbranched polymers, star-shaped poly(ethylene oxide) and poly(2-ethyl-2-oxazoline)-bound polyamidoamine dendrimer, were immobilized on polyurethane (PU) films using photoreactive azidophenyl groups. Immobilization of the hyperbranched polymers was verified by ATR FT-IR observations and contact angle measurements. Using photoreactive molecules, this study shows a unique method to modify polymer films without functional groups easily through immobilization of other polymers on the film surface. PU surfaces modified with immobilized hyperbranched polymer showed significantly reduced platelet adhesion, i.e. increased blood compatibility, as measured via UV spectrometry and scanning electron microscopy.

scholarly journals Preparation and characterization of polyethylene glycol/poly(L-lactic acid) blends

2017 ◽  
Vol 89 (1) ◽  
pp. 141-152 ◽  
Author(s):  
Ioanna-Georgia Athanasoulia ◽  
Petroula A. Tarantili
Keyword(s):  
Contact Angle ◽  
Lactic Acid ◽  
Degradation Process ◽  
Water Contact ◽  
Wetting Ability ◽  
Angle Measurements ◽  
Low Concentrations ◽  
Contact Angle Measurements ◽  
Twin Screw ◽  
Poly Ethylene

AbstractThe effect of incorporation of poly(ethylene glycol) (PEG) on thermomechanical and hydrophilicity properties of poly(L-lactic acid) (PLLA) was investigated. PEG/PLLA blends, containing 10, 20, 30 and 40 wt% PEG, were prepared by melt-extrusion in a co-rotating twin-screw extruder. By DSC analysis, it was observed that the Tg of PLLA phase in PEG/PLLA blends decreased accompanied by a significant decrease in Tcc and increase in their melting enthalpy. Therefore, the addition of PEG enhances the crystallization ability of PLLA phase due to its lubricating effect which increased mobility of PLLA chains. From TGA it was observed that low concentrations of PEG (10 & 20 wt%) increase the Tonset of thermal degradation, probably due to improved heat resistance of the crystalline phase. At higher PEG content, the Tonset decreases, as the lubricating effect becomes the controlling mechanism for the initiation of degradation process. Decrease in tensile strength and modulus was recorded especially in PLLA blends with PEG content higher than 20 wt%. The elongation at break decreases reaching a maximum at 20 wt% PEG and then dropped again. To investigate the effect of PEG on the wetting ability of PLLA, water contact angle measurements were performed. The results indicate that the introduction of PEG lowers the contact angle values in PEG/PLLA film surfaces, as compared to pure PLLA, suggesting improved hydrophilic properties.

Direct fabrication of nanoscale bio-adhesive patterns by electron beam surface modification of plasma polymerized poly ethylene oxide-like coatings

2008 ◽  
Vol 19 (12) ◽  
pp. 125306 ◽  
Author(s):  
Frédéric Brétagnol ◽  
Lucel Sirghi ◽  
Stéphane Mornet ◽  
Takao Sasaki ◽  
Douglas Gilliland ◽  
...  
Keyword(s):  
Surface Modification ◽  
Electron Beam ◽  
Ethylene Oxide ◽  
Direct Fabrication ◽  
Beam Surface ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Organic–inorganic sol-gel thick films for humidity barriers

2008 ◽  
Vol 23 (8) ◽  
pp. 2084-2090 ◽  
Author(s):  
Andrei Jitianu ◽  
Glenn Amatucci ◽  
Lisa C. Klein
Keyword(s):  
Contact Angle ◽  
Thick Films ◽  
Sol Gel ◽  
Attenuated Total Reflection ◽  
Inorganic Materials ◽  
Angle Measurements ◽  
Glass Slides ◽  
Contact Angle Measurements ◽  
Sol Gel Process ◽  
Poly Ethylene

Hybrid thick films were deposited on Surlyn, a copolymer of poly(ethylene- co-methacrylic acid) and a common adhesion film for metal surfaces. Hybrid organic–inorganic materials were prepared by a sol-gel process. Methyltriethoxysilane (MTES) with tetraethoxysilane (TEOS), phenyltriethoxysilane (PhTES) with TEOS, and methyltrimethoxysilane (MTMS) with tetramethoxysilane (TMOS) were investigated. The inorganic component was selected to form the network for the film, while the organic component was selected to repel water and fill porosity. The films were deposited on Surlyn and on glass slides. The properties of the films were investigated using attenuated total reflection Fourier transform infrared (FTIR) and Raman spectroscopy. Contact-angle measurements indicated that the contact angle increased from ∼76.5° for Surlyn alone to ∼89.6° for Surlyn coated with MTES.

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