An amorphous poly(urethane-urea) copolymer composed of 70 wt% poly(ethylene oxide) (PEO) soft segments (SS) (Mw = 2000 g mol?1) and 30 cycloaliphatic hard (HS) was subjected to in-situ X-Rays during tensile deformation. Mechanical hardening at room temperature attributed strain induced crystallization (SIC) the PEO SS through multiplication aligned crystallites. The permanent nature these cryst...

Biodegradable strain sensors able to undergo controlled degradation following implantation have recently received significant interest as novel approaches detect pathological tissue swelling or non-physiological stresses. In this study, the physicomechanical, electrochemical and active pressure sensing behavior of an electrically conductive biodegradable poly(glycerol sebacate urethane) (PGSU) ...

• The migration of 1-butanol caused the improper curing an epoxy-PU system. 1-Butanol has a two hundred times higher reaction rate than polyol reactant. 2-Butanol helps to improve hardness development Curing coatings under solvent evaporation-suppressed conditions, can lead trapping solvents and subsequent into mid- or topcoats in multilayer coating Such migrations may have adverse effects on m...

We have used a series of in vitro and in vivo tests to assess the suitability of two new degradable polymers for application as coatings for drug-eluting stents. The first is a family of urethane-linked multi-block copolymers (MBCP) that comprise blocks of lactide, glycolide, epsilon-caprolactone and/or poly(ethylene glycol) chain-extended with 1,4-butanediisocyanate (SynBiosys polymers). The s...

Introduction: Polyurethanes (PU) have long been used for biomedical applications due to their excellent mechanical properties and reasonable biocompatibility. However, polyether urethane elastomers are susceptible to biodegradation. Silicones are known to be biostable and biocompatible, making them an ideal replacement for the polyether soft segment of polyurethanes. As a result, a new silicone...