Synthesis and surface properties of polyurethane end-capped with hybrid hydrocarbon/fluorocarbon double-chain phospholipid.
To improve hemocompatibility of biomedical polyurethanes (PUs), a series of new fluorinated phospholipid end-capped polyurethanes (FPCPUs) as blending PU additives were designed and synthesized using diphenyl methane diisocyanate and 1,4-butanediol as hard segment, poly(tetramethylene glycol), polypropylene glycol, polycarbonate diols, and polyethylene glycol as soft segments, respectively, aminofunctionalized hybrid hydrocarbon/fluorocarbon double-chain phospholipid as end-capper. The bulk structures and surface properties of the obtained FPCPUs were fully characterized by (1)H NMR, Fourier transform infrared, gel permeation chromatography, X-ray photoelectron spectroscopy, differential scanning calorimetry, atomic force microscopy, and water contact angle measurement. It was found that the phosphatidylcholine groups could enrich on the surfaces and subsurfaces with the help of the fluorocarbon chains and self-assemble into mimic biomembrane on these polymer surfaces. These surfaces could effectively suppress fibrinogen adsorption, as evaluated by enzyme-linked immunosorbent assay method. Our work indicates that the FPCPUs should be one of the most potential modified additives for enhancing hemocompatibility of traditional medical PUs.
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
Jiehua
J
Li
Yi
Y
Zhang
Jian
J
Yang
Hong
H
Tan
Jianshu
J
Li
Qiang
Q
Fu
D000327:Adsorption; D000818:Animals; D001672:Biocompatible Materials / Q000138:chemical synthesis / Q000737:chemistry*; D005340:Fibrinogen / Q000302:isolation & purification; D005466:Fluorocarbons / Q000138:chemical synthesis / Q000737:chemistry*; D010743:Phospholipids / Q000138:chemical synthesis / Q000737:chemistry*; D011140:Polyurethanes / Q000138:chemical synthesis / Q000737:chemistry*; D013057:Spectrum Analysis; D013499:Surface Properties
D001672:Biocompatible Materials; D005466:Fluorocarbons; D010743:Phospholipids; D011140:Polyurethanes; D005340:Fibrinogen