Results 241 to 250 of about 20,841 (294)

Bacterial adhesion to functionalized polyurethanes

Journal of Biomaterials Science, Polymer Edition, 1999
The effect of fibrinogen and high molecular weight kininogen on bacterial adhesion to functionalized polyurethanes was studied. Glass slides were coated with different polyurethanes, including Pellethane, sulfonated Pellethane, phosphonated Pellethane, a zwitterionic phosphonated polyurethane, and quaternized amine polyurethanes.
R G, Flemming, R A, Proctor, S L, Cooper
openaire   +2 more sources

Controlling cell adhesion on polyurethanes

Soft Matter, 2008
Cell attractive or non-attractive surface properties of polyurethane devices can be controlled by treating them with zirconium tetra(tert-butoxide). This gives reactive interfacial zirconium complex species that can be used subsequently to bond cell attractive peptides such as arg-gly-asp (RGD) or cell non-attractive organics such as polyethylene ...
T Joseph, Dennes, Jeffrey, Schwartz
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Polyurethanes as cryogenic adhesives

Journal of Applied Polymer Science, 1965
AbstractPolyurethanes containing the polyether backbone were found to give superior adhesives at cryogenic temperatures as compared to epoxy resins. However, the adhesives showed poor performance at 250 and 400°F. The adhesives were prepared from 2,4‐toluene diisocyanate (TDI)‐terminated polyether polyols and cured with 3,3′‐dichloro‐4,4 ...
Stanley R. Sandler, Florence R. Berg
openaire   +1 more source

Neutrophil adhesion on phosphorylcholine-containing polyurethanes

Biomaterials, 1998
Polyurethanes have been synthesized using glycerophosphorylcholine (GPC) as a chain extender. By altering the ratio of GPC to butanediol (BD), a series of polymers was obtained composed of different contents of phosphorylcholine. Bulk and surface characterization of the polymers was carried out.
L Y, Yung, S L, Cooper
openaire   +2 more sources

Adhesion of aqueous polyurethane adhesive to human hair

International Journal of Adhesion and Adhesives, 2014
Abstract Adhesion of a water-based polyurethane adhesive to a human hair has been studied using the microbond test. Adhesion promotion using a silane coupling agent and air plasma treatment was compared. The results show that after air plasma treatment, the interfacial shear strength (IFSS) between the polyurethane and human hair was increased from 3.
Zheng Liu, Frank R. Jones, Yunzhi Liu, Bailing Jiang   +3 more
openaire   +1 more source

Adhesion properties of polyurethane pressure-sensitive adhesive

Journal of Adhesion Science and Technology, 2013
In this study, the adhesion properties of polyurethane (PUR) pressure-sensitive adhesive (PSA) were investigated. The PUR-PSA was prepared by the cross-linking reaction of a urethane polymer consisting of toluene-2,4-diisocyanate and poly(propylene glycol) components using polyisocyanate as a cross-linking agent.
Yoshinobu Nakamura, Shinji Nakano, Keiko Ito, Keigo Imamura, Syuji Fujii, Mariko Sasaki, Yoshiaki Urahama   +6 more
openaire   +1 more source

Polyurethane adhesives for electronic devices

Journal of Adhesion Science and Technology, 2000
The choice of polymeric materials in electronic packaging influences not only the performance parameters of electronic devices, but also their long-term reliability. Adverse conditions such as humidity, high temperature, and vibration prevent the electronic devices from functioning in the way that they were designed.
Oleg L. Figovsky, Leonid S. Sklyarsky, Olga N. Sklyarsky   +2 more
openaire   +1 more source

Role of the polyurethane component in the adhesive composition on the hydrolytic stability of the adhesive

International Journal of Adhesion and Adhesives, 1993
In polyurethanes based on linear polyol, isocyanate and a chain extender, the physical morphology of adhesive seems to play an important role in its overall strength characteristics. The aim of this paper is to examine how the morphology and phase separation of such polyurethane components affect the adhesive properties before and after hydrolysis.
Kovačević, Vera, Šmit, Ivan, Hace, Drago, Sućeska, Muhamed, Mudri, Irinej, Bravar, Mladen   +5 more
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Survey of polyurethane adhesives

International Journal of Adhesion and Adhesives, 1984
Abstract Polyurethane chemistry provides a means to ‘tailor’ adhesives to specific needs. This is being achieved by polyurethane technology at a cost of more sophisticated application/bonding equipment and a need for better control of raw materials and adhesive processing conditions.
openaire   +1 more source

The Effect of Moisture on Polyurethane Adhesives

The Journal of Adhesion, 1981
Abstract Polyurethane adhesives predominate for bonding shoe soles but the moisture resistance of the adhesive polymer has been questioned. A typical polymer was hydrolytically degraded at 120°C for up to 29 hours and at 20, 30 or 37°C for up to one year and changes in physical and bonding properties monitored.
S. G. Abbott, N. Brumpton
openaire   +1 more source