We describe the generation of supramolecular polyurethanes and positive effect that chirality has upon physical properties these materials.

thermoplastic polyurethane (tpu)/clay nanocomposites were prepared via a melt-compounding method using ester type tpu and two different modified organoclays (cloisite 30b and cloisite 15a) in different contents. the effects of the chemical structure and content of the nanoclays on the thermal degradation and mechanical properties of tpu were also investigated. the effect of structural modificat...

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 glycol (PEG) to the device surface. Control of t...

Cardiovascular implant mineralization involving bioprosthetic materials, such as glutaraldehyde cross linked porcine aortic valves or synthetic materials such as polyurethanes, is an important problem that frequently leads to clinical failure of bioprosthetic heart valves, and complicates long-term experimental artificial heart device implants. Novel, proprietary, calcification resistant polyet...

Polyurethanes (PU) have a wide variety of applications due to possessing tailored properties which can be imparted by composition. The combination polyols in different ratios provide specific for the segmented PU, such as mechanical strength, elasticity, hydrophilicity and so on. In this work, amphiphilic polyurethanes, based on poly(ε-caprolactone)diol (PCL-diol) poly(2-ethyl-2-oxazoline)diol ...