New segmented polyurethanes (SPUs) containing poly(butadiene) (PBD) soft segments and phospholipid moieties in the main chains and long-chain alkyl groups in the side chains were synthesized. The phospholipid moieties include bis[2-(2-hydroxyethyldimethylammonio)ethyl] 2-octylpropane-1,3-diyl bis(phosphate) (OcPDP), bis[2-(2-hydroxyethyldimethylammonio)ethyl] 2-oleylpropane-1,3-diyl bis(phosphate) (OlPDP) and bis[2-(2-hydroxyethyldimethylammonio)ethyl] 2-cetylpropane-1,3-diyl bis(phosphate) (CPDP). The bulk characterization of synthesized SPUs was investigated by infrared (IR) spectroscopy and gel-permeation chromatography (GPC). The mechanical properties were evaluated by dynamic viscoelasticity and tensile measurements. The existence of phospholipid analogous groups on the surface of these SPUs was revealed by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The blood compatibilities of the new polymers were evaluated by platelet rich plasma (PRP) contact studies and viewed by scanning electron microscopy (SEM) using medical grade BioSpan
®
and non-phospholipid polyurethane as references. These new materials have good surfaces in terms of platelet adhesion, and the morphology of adhered platelets undergoes a relatively low degree of variation.
新型分段聚
氨酯(
SPUs)由聚(
丁二烯)(
PBD)软段和主链中的
磷脂部分以及侧链中的长链烷基组分合成。
磷脂部分包括双[2-(2-羟乙基)二甲基
铵基]乙基 2-辛基
丙烷-1,3
-二醇双
磷酸酯(OCPDP)、双[2-(2-羟乙基)二甲基
铵基]乙基 2-
油酸丙烷-1,3
-二醇双
磷酸酯(OlPDP)和双[2-(2-羟乙基)二甲基
铵基]乙基 2-鲸烷
丙烷-1,3
-二醇双
磷酸酯(CPDP)。合成的
SPUs的物料特性通过红外(IR)光谱和凝胶渗透色谱(
GPC)进行了研究。其机械性能通过动态粘弹性和拉伸测试进行评估。采用衰减全反射傅里叶变换红外光谱(ATR-FTIR)、X射线光电子能谱(XPS)和接触角测量揭示了这些
SPUs表面上
磷脂类似基团的存在。新聚合物的血液相容性通过与富血小板血浆(PRP)的接触研究进行评估,并通过扫描电子显微镜(
SEM)观察,使用医用级Bio
SPan®和非
磷脂聚
氨酯作为参考。这些新材料在血小板粘附方面表现出良好的表面特性,粘附血小板的形态变化相对较小。