Abstract
A new type of phosphatidylcholine-containing segmented polyurethane (SPU) surface was produced by grafting various methacrylates and phosphatidylcholine polar headgroups to a vinyl-group-containing segmented polyurethane (V-SPU) using α,α‘-azobisisobutyronitrile (AIBN) as a radical initiator. 1,4-Butanediol (BD) as chain extender was used to synthesize the V-SPU, which is based on diphenylmethane diisocyanate (MDI) and vinyl-group-containing poly(butadiene) diol (PBD). Several methacrylates, such as methyl methacrylate (MMA), butyl methacrylate (BMA), stearyl methacrylate (SMA), and a phosphatidylcholine polar-headgroup-containing vinyl monomer, 2-(methacrylorloxy)ethyl-2-(trimethylammonium)ethyl phosphate (MTP), were grafted to the V-SPU. The bulk characteristics of the grafted V-SPUs were investigated by infrared (IR) spectroscopy, viscosity, and gel permeation chromatography (GPC) measurements. Mechanical properties of the typical SPU containing MMA were measured by dynamic viscoelasticity and tensile ...
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