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首页> 外文期刊>Journal of Applied Polymer Science >Investigation of design parameters in generating antifouling and lubricating surfaces using hydrophilic polymer brushes
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Investigation of design parameters in generating antifouling and lubricating surfaces using hydrophilic polymer brushes

机译：使用亲水聚合物刷产生防污和润滑表面的设计参数研究

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Long-term stability of hydrophilic surface coatings that prevent fouling, cell adhesion and present a lubricious interface for biomaterials has been widely investigated in recent years. As an alternative to the gold standard poly(ethylene glycol) (PEG), poly(2-oxazoline)-based coatings are promising due to their higher stability against oxidative degradation in comparison to PEG. In this study, we compare the antifouling and tribological properties of PEG and poly(2-methyl-2-oxazoline) (PMOXA) brush structures as a function of structural design parameters such as grafting density, chain length, and the monomer solubility. Brush properties such as hydration (number of H2O molecules per monomer), shear modulus, and serum adsorption as a function of design parameters were estimated using optical waveguide lightmode spectroscopy and quartz crystal microbalance/dissipation techniques. At high monomer surface densities, PMOXA showed approximately three times higher structurally associated H2O molecules per monomer in comparison to PEG brushes, leading to stiffer PMOXA brushes. We found that the chain stiffening of PMOXA brushes lead to higher macroscopic coefficients of friction; however presented similar adsorbed serum mass (high antifouling properties) when compared to PEG brushes. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47659.
机译：近年来广泛研究了防止污垢，细胞粘附和为生物材料的润滑界面进行污垢的亲水性表面涂层的长期稳定性。作为金标准聚（乙二醇）（PEG）的替代方案，具有与PEG相比其较高氧化降解的稳定性导致的聚（2-恶唑啉）的涂层是有前途的。在这项研究中，我们将PEG和聚（2-甲基-2-恶唑啉）（PMOXA）刷结构的防污和摩擦学特性进行比较，作为结构设计参数，例如接枝密度，链长和单体溶解度。使用光波导光标光谱和石英晶微观/耗散技术估计作为设计参数的函数的水化（每单体的H2O分子数），剪切模量和血清吸附等刷子性质。在高单体表面密度下，与PEG刷子相比，PMOXA显示每种单体的结构相关的H2O分子高约3倍，导致腐丽的PMOXA刷子。我们发现PMOXA刷的链加固导致更高的宏观摩擦系数;然而，与PEG刷相比，呈现出类似的吸附血清质量（高防污性能）。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47659。

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