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首页> 外文期刊>Journal of Applied Polymer Science >Structural-mechanical and biomedical surface properties of elastic polyurethane afterPECVDof Ar/C2H2
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Structural-mechanical and biomedical surface properties of elastic polyurethane afterPECVDof Ar/C2H2

机译：弹性聚氨酯后的结构 - 机械和生物医学表面特性Ar / C2H2

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Plasma treatment of polymers has many perspective applications in biomedical area. Carbon or carbon-like coatings of elastic polymers are of interest. However, deformation of the polymeric substrates easily damages the modified surface. Such flaws cancel all the benefits of the treatment and should be avoided. In this paper, a surface of elastic polyurethane (PU) (elastic modulus is 25 MPa) is treated by plasma-enhanced chemical vapor deposition (PECVD) of acetylene/argon. As a result, inhomogeneous carbon-containing nanolayers are formed: discontinuous and solid coatings with heterogeneous stiffness and thickness (from 2 to 11 nm). Structural peculiarities and relatively low elastic modulus (several GPa) of the coatings prevent their fracture under uniaxial deformation of at least up to 50% (however, the thickest coating is covering by a mesh of local nanocracks). The coatings have improved biomedical properties: better albumin adsorption and resistance to bacteria ofEscherichia coli.
机译：聚合物的等离子体处理在生物医学领域有着广阔的应用前景。弹性聚合物的碳或类碳涂层令人感兴趣。然而，聚合物基材的变形容易损坏改性表面。这种缺陷抵消了治疗的所有好处，应该避免。本文采用乙炔/氩气等离子体增强化学气相沉积（PECVD）技术对弹性聚氨酯（PU）（弹性模量为25MPa）表面进行了处理。结果，形成了不均匀的含碳纳米层：具有不均匀刚度和厚度（从2到11 nm）的不连续固体涂层。涂层的结构特点和相对较低的弹性模量（几个GPa）可防止其在至少高达50%的单轴变形下断裂（然而，最厚的涂层被局部纳米裂纹网覆盖）。这些涂层改善了生物医学性能：更好的白蛋白吸附和对大肠杆菌的耐药性。

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