TY - JOUR
T1 - Evaluation and characterisation of urinary catheter coating utilising Hansen solubility parameters and FEA analysis
AU - Carberry, Brendan J.
AU - Farrell, Joseph
AU - Kennedy, James E.
N1 - Publisher Copyright:
© 2015 Elsevier B.V..
PY - 2015/8/25
Y1 - 2015/8/25
N2 - This work investigated the Hansen solubility parameters required to optimise a functional polyurethane base coat as an attachment for a lubricious polyvinyl pyrrolidone coating for polyvinyl chloride urinary catheters. Solvents included benzyl alcohol, tetrahydrofuran, acetonitrile, and cyclohexanone and blends thereof. The viscosity of the polymer-solvent compositions was characterised using Redwood No.1 viscometer. The UV cured polymer-solvent blends were fully characterised using scanning electron microscopy, differential scanning calorimetry, and digital goniometry. A finite element analysis (FEA) model of the urethra during catheterisation was also developed to illustrate the magnitude of deflection expected with the hydrophilic coating on the catheter. Based on the theoretical modelling and subsequent experimental results this demonstrated that the materials dissolved in short succession of immersion in the calculated solvent blend. Also, the various compositions of polyvinyl pyrrolidone in the solutions produced noticeable variations in coating thicknesses ranging from 8. μm to 26. μm.
AB - This work investigated the Hansen solubility parameters required to optimise a functional polyurethane base coat as an attachment for a lubricious polyvinyl pyrrolidone coating for polyvinyl chloride urinary catheters. Solvents included benzyl alcohol, tetrahydrofuran, acetonitrile, and cyclohexanone and blends thereof. The viscosity of the polymer-solvent compositions was characterised using Redwood No.1 viscometer. The UV cured polymer-solvent blends were fully characterised using scanning electron microscopy, differential scanning calorimetry, and digital goniometry. A finite element analysis (FEA) model of the urethra during catheterisation was also developed to illustrate the magnitude of deflection expected with the hydrophilic coating on the catheter. Based on the theoretical modelling and subsequent experimental results this demonstrated that the materials dissolved in short succession of immersion in the calculated solvent blend. Also, the various compositions of polyvinyl pyrrolidone in the solutions produced noticeable variations in coating thicknesses ranging from 8. μm to 26. μm.
KW - Contact angle
KW - FEA
KW - Hansen solubility parameters
KW - Solvent blends
KW - Tea's diagram
UR - http://www.scopus.com/inward/record.url?scp=84939266548&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2015.06.029
DO - 10.1016/j.surfcoat.2015.06.029
M3 - Article
AN - SCOPUS:84939266548
SN - 0257-8972
VL - 276
SP - 456
EP - 463
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
ER -