Antithrombogenicity of hydrophilic polyurethane-hydrophobic polystyrene IPNs. 1.Synthesis and characterization

A series of interpenetrating polymer networks (IPNs) composed of hydrophilic polyurethane (PU) and hydrophobic polystyrene (PS) were prepared by the simultaneous polymerization method. The PU network was synthesized via the isocyanate-terminated PU prepolymer based on polyethylene glycol (PEG), a highly hydrophilic oligomer, and hexamethylene diisocyanate (HDI). The bulk and surface characteristics of these materials were analyzed by differential scanning calorimetry (DSC), tensile testing, scanning electron microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR), electron spectroscopy for chemical analysis (ESCA), and contact angle measurement. The PU/PS IPNs prepared in this study exhibited phase separated structures, which had dispersed PS domains in the continuous PU matrix, in both the bulk and surface showing two transition temperatures. The IPN containing 50 wt% of PS showed good mechanical properties. The enrichment of PU phase in the surface was revealed by SEM, ATR-FTIR, ESCA, and contact angle measurement.
Publisher
Vsp Bv
Issue Date
1993-07
Language
ENG
Keywords

INTERPENETRATING POLYMER NETWORKS; HIGH-PRESSURE; COPOLYMERS; MORPHOLOGY; BEHAVIOR

Citation

JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION, v.6, no.2, pp.195 - 210

ISSN
0920-5063
URI
http://hdl.handle.net/10203/3954
Appears in Collection
CBE-Journal Papers(저널논문)
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